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Non-Isothermal Desolvation Kinetics of Erythromycin A Acetone Solvate
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作者 王占忠 王静康 朱政 《Transactions of Tianjin University》 EI CAS 2007年第3期175-180,共6页
The desolvation of erythromycin acetone solvate was investigated under non-isothermal conditions by a thermogravimetric analyzer. This paper emphasized the kinetic analysis of non-isothermal TG-DTA data by Achar metho... The desolvation of erythromycin acetone solvate was investigated under non-isothermal conditions by a thermogravimetric analyzer. This paper emphasized the kinetic analysis of non-isothermal TG-DTA data by Achar method and Coats-Redfern method to fit various solid-state reaction models, and to achieve kinetic parameters of desolvation. The mechanism of thermal desolvation was evaluated using the kinetic compensation effect. The results show that kinetics of desolvation of erythromycin acetone solvate was compatible with the mechanism of a two-dimensional diffusion controlled and was best expressed by Valensi equation. Corresponding to the integral method and the differential method, the activation energy of desolvation of erythromycin acetone solvate was estimated to be 51.26—57.11 kJ/mol, and the pre-exponential factor was 8.077×106 s-1—4.326×107 s-1, respectively. 展开更多
关键词 erythromycin acetone solvate non-isothermal desolvation solid-state reaction model kinetic compensation effect
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Kinetics of Desolvation of the Glycation of Hemoglobin Catalyzed by Buffer Phosphate and Arsenate
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作者 Herminia Gil Johanna Pefia Daniel Salcedo 《Journal of Chemistry and Chemical Engineering》 2012年第5期410-416,共7页
The glycation of hemoglobin is catalyzed by buffer phosphate and arsenate. The catalytic constant (kB) for aqueous arsenate is two-fold larger than for aqueous phosphate. The catalytic constant (ks) of phosphate i... The glycation of hemoglobin is catalyzed by buffer phosphate and arsenate. The catalytic constant (kB) for aqueous arsenate is two-fold larger than for aqueous phosphate. The catalytic constant (ks) of phosphate in sorbitol mixtures increase from (1.67 ± 0.11) × 10-10 s-1·M-1 to (5.78 ± 0.39) × 10-10 s-1·M-1 and the catalytic constant is enhanced 3.5 times, relative to that in water; the catalytic constant (kB) of arsenate in sorbitol mixtures increase from (2.98±0.07)× 10-10 s-1·M-1 to (6.62 ± 0.53) × 10-10 s-1·M-1 and the catalytic constant is enhanced 2 times, relative to that in water. The spontaneous rate constants are independent of sorbitol concentration for phosphate and arsenate. The catalytic power of phosphate and arsenate in sorbitol are the same. Desolvation of strongly hydrated species such as HPO42 and HAsO42 should make a contribution to the energy cost of the formation of anion-hemoglobin complexes and can be a possible explanation for higher catalytic potential of HAsO42 in water. The same catalytic constant (ksB) for phosphate and arsenate in sorbitol indicates that the same catalyst base group on the hemoglobin molecule may be involved in the abstraction of proton in the Amadori rearrangement. 展开更多
关键词 Glycation HEMOGLOBIN CATALYSIS desolvation PHOSPHATE arsenate.
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Multistep Desolvation as a Fundamental Principle Governing Peptide Self-Assembly Through Liquid-Liquid Phase Separation 被引量:1
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作者 Chengqian Yuan Ruirui Xing +3 位作者 Jie Cui Wei Fan Junbai Li Xuehai Yan 《CCS Chemistry》 CSCD 2024年第1期255-265,共11页
Biomolecular self-assembly based on peptides and proteins is a general phenomenon encountered in natural and synthetic systems.Liquid–liquid phase separation(LLPS)is intimately involved in biomolecular self-assembly,... Biomolecular self-assembly based on peptides and proteins is a general phenomenon encountered in natural and synthetic systems.Liquid–liquid phase separation(LLPS)is intimately involved in biomolecular self-assembly,yet the key factors at a molecular scale activating or modulating such a process remain largely elusive.Herein,we discovered in our experiments that multistep desolvation is fundamental to the formation and evolution of peptide-rich droplets:The first step was partial desolvation of peptides to form peptide clusters,and the second step was selective desolvation of hydrophobic groups within clusters to trigger LLPS and the formation of peptiderich droplets,followed by complete desolvation of droplets,initiating the nucleation of peptide selfassembly.Manipulation of the degree of desolvation at different stages was an effective strategy to control the self-assembly pathways and polymorphisms.This study sheds light on the molecular origin of LLPS-mediated self-assembly distinct from classical one-step self-assembly and paves the way for the precise control of supramolecular self-assembly. 展开更多
关键词 PEPTIDE liquid-liquid phase separation multistep desolvation NANOSTRUCTURES SELF-ASSEMBLY
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Covalent Organic Framework with 3D Ordered Channel and Multi-Functional Groups Endows Zn Anode with Superior Stability 被引量:1
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作者 Bin Li Pengchao Ruan +9 位作者 Xieyu Xu Zhangxing He Xinyan Zhu Liang Pan Ziyu Peng Yangyang Liu Peng Zhou Bingan Lu Lei Dai Jiang Zhou 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第4期350-363,共14页
Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable gr... Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable growth of Zn dendrite and severe side reactions including hydrogen evolution reaction,corrosion,and passivation,etc.Herein,an interlayer containing fluorinated zincophilic covalent organic framework with sulfonic acid groups(COF-S-F)is developed on Zn metal(Zn@COF-S-F)as the artificial solid electrolyte interface(SEI).Sulfonic acid group(-SO_(3)H)in COF-S-F can effectively ameliorate the desolvation process of hydrated Zn ions,and the three-dimensional channel with fluoride group(-F)can provide interconnected channels for the favorable transport of Zn ions with ion-confinement effects,endowing Zn@COF-S-F with dendrite-free morphology and suppressed side reactions.Consequently,Zn@COF-S-F symmetric cell can stably cycle for 1,000 h with low average hysteresis voltage(50.5 m V)at the current density of 1.5 m A cm^(-2).Zn@COF-S-F|Mn O_(2)cell delivers the discharge specific capacity of 206.8 m Ah g^(-1)at the current density of 1.2 A g^(-1)after 800 cycles with high-capacity retention(87.9%).Enlightening,building artificial SEI on metallic Zn surface with targeted design has been proved as the effective strategy to foster the practical application of high-performance AZIBs. 展开更多
关键词 Aqueous Zn ion batteries Covalent organic framework Interfacial modification Zn ion flux regulation desolvation effect
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In Situ Growth of 2D Metal–Organic Framework Ion Sieve Interphase for Reversible Zinc Anodes
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作者 Jing Sun Qinping Jian +2 位作者 Bin Liu Pengzhu Lin Tianshou Zhao 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第6期158-166,共9页
Zinc metal anodes are gaining popularity in aqueous electrochemical energy storage systems for their high safety,cost-effectiveness,and high capacity.However,the service life of zinc metal anodes is severely constrain... Zinc metal anodes are gaining popularity in aqueous electrochemical energy storage systems for their high safety,cost-effectiveness,and high capacity.However,the service life of zinc metal anodes is severely constrained by critical challenges,including dendrites,water-induced hydrogen evolution,and passivation.In this study,a protective two-dimensional metal–organic framework interphase is in situ constructed on the zinc anode surface with a novel gel vapor deposition method.The ultrathin interphase layer(~1μm)is made of layer-stacking 2D nanosheets with angstrom-level pores of around 2.1Å,which serves as an ion sieve to reject large solvent–ion pairs while homogenizes the transport of partially desolvated zinc ions,contributing to a uniform and highly reversible zinc deposition.With the shielding of the interphase layer,an ultra-stable zinc plating/stripping is achieved in symmetric cells with cycling over 1000 h at 0.5 mA cm−2 and~700 h at 1 mA cm^(−2),far exceeding that of the bare zinc anodes(250 and 70 h).Furthermore,as a proof-of-concept demonstration,the full cell paired with MnO_(2) cathode demonstrates improved rate performances and stable cycling(1200 cycles at 1 A g−1).This work provides fresh insights into interphase design to promote the performance of zinc metal anodes. 展开更多
关键词 2D MOF desolvation INTERPHASE ion sieve zinc anode
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Loosely coordinating diluted highly concentrated electrolyte toward -60℃ Li metal batteries
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作者 Han Zhang Ziqi Zeng +5 位作者 Qiang Wu Xinlan Wang Mingsheng Qin Sheng Lei Shijie Cheng Jia Xie 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第3期380-387,I0009,共9页
Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe electrochemical performance deterioration at sub-zero temperatures.Such failure behavior highly correlates to inferio... Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe electrochemical performance deterioration at sub-zero temperatures.Such failure behavior highly correlates to inferior lithium metal anode(LMA) compatibility and sluggish Li^(+) desolvation.Here,we demonstrate that cyclopentylmethyl ether(CPME) based diluted high-concentration electrolyte(DHCE)enables-60℃ LMBs operation.By leveraging the loose coordination between Li^(+) and CPME,such developed electrolyte boosts the formation of ion clusters to derive anion-dominant interfacial chemistry for enhancing LMA compatibility and greatly accelerates Li^(+) desolvation kinetics.The resulting electrolyte demonstrates high Coulombic efficiencies(CE),providing over 99.5%,99.1%,98.5% and 95% at 25,-20,-40,and-60℃respectively.The assembled Li-S battery exhibits remarkable cyclic stability in-20,and-40℃ at 0.2 C charging and 0.5 C discharging.Even at-60℃,Li-S cell with this designed electrolyte retains> 70% of the initial capacity over 170 cycles.Besides,lithium metal coin cell and pouch cell with10 mg cm^(-2) high S cathode loading exhibit cycling stability at-20℃.This work offers an opportunity for rational designing electrolytes toward low temperature LMBs. 展开更多
关键词 Lithium metal batteries -60℃operation Lithium metal anode compatibility Li^(+) desolvation kinetics
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Promoting ion adsorption and desolvation kinetics enables high capacity and rate capability of stibium anode for advanced alkaline battery
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作者 Peng Zhang Jinhao Xie +3 位作者 Fan Yang Xin Shi Yanxia Yu Xihong Lu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第36期60-67,共8页
Stibium(Sb)metal with high theoretic capacity,suitable negative working window and inexpensive nature are promising anode material for advanced aqueous alkaline batteries(AABs).However,the further development of Sb an... Stibium(Sb)metal with high theoretic capacity,suitable negative working window and inexpensive nature are promising anode material for advanced aqueous alkaline batteries(AABs).However,the further development of Sb anode is severely hindered by the low capacity and poor rate capability which is originated from deficient adsorption of[Sb(OH)_(4)]^(-)and its sluggish desolvation kinetics.Herein,a nitrogen doped carbon cages(NCCs)substrate is constructed as high capacity and rate capability anode by promoting the adsorption and following desolvation process of[Sb(OH)_(4)]^(-)via the enhanced attraction toward(OH)-in the solvated[Sb(OH)_(4)]^(-).Consequently,the designed Sb/NCCs anode delivers a high capacity of 627 m Ah g^(-1)with an average 95%Sb utilization,an outstanding coulombic efficiency(CE)of 95%and an impressive lifespan(>110 h).Meanwhile,the Ni_(3)Se_(2)//Sb/NCCs batteries show great capacity retention of 86.7%after 2000 cycles with an areal capacity of 0.52 m Ah cm^(-2).Implementation of the designed anode allows for the construction of Sb-based AABs with enhanced rate capability,energy density and cycling performance. 展开更多
关键词 Aqueous alkaline batteries Stibium anode N-doped carbon Ion adsorption desolvation kinetics
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Crystal-to-crystal transformation from the triclinic to the cubic crystal system by partial desolvation
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作者 Qianqian Guo Irmgard Kalf Ulli Englert 《Frontiers of Chemical Science and Engineering》 SCIE EI CAS CSCD 2018年第3期433-439,共7页
Diffusion reaction of the labile building block Mg(acacCN)2 (acacCN= 3-cyanoacetylacetonate) with silver salts leads to a series of solvated Mg/Ag bimetallic coordination polymers with composition [Mg(acacCN)aAg... Diffusion reaction of the labile building block Mg(acacCN)2 (acacCN= 3-cyanoacetylacetonate) with silver salts leads to a series of solvated Mg/Ag bimetallic coordination polymers with composition [Mg(acacCN)aAg].solvent. Despite their common stoichiometry, the topology of these polymers depends on the solvent of crystallization. The two-dimensional coordination compound [Mg(acacCN)aAg]-4CHCl3 in space group P]- is obtained as platelet-shaped crystals from a mixture of methanol and chloroform. When kept in the reaction mixture, these thin plates within one week convert to isometric tetrahedral crystals of the 3D network [Mg(acacCN)3Ag]. 2CHC13 in the cubic space group/9213. The transformation reaction proceeds via dissolution and recrystallization. The co-crystallized solvent molecules play an important role for stabilizing the target structure: They subtend Cl...Cl contacts and interact via non- classical C-H.-. O hydrogen bonds with the coordination framework. In the new cubic coordination network, both Mg(II) and Ag(I) adopt octahedral coordination, with unprecedented face-sharing by bridging O atoms of three acetylacetonato moieties. Prolonged standing of [Mg(acacCN)3Ag]-2CHCl3 in the reaction medium leads to further degradation, under formation of [Ag(acacCN)]. 展开更多
关键词 ditopic ligand substituted acetylacetone desolvation DIFFRACTION
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High interfacial-energy heterostructure facilitates large-sized lithium nucleation and rapid Li+desolvation process
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作者 Zhipeng Wen Yuanhong Kang +5 位作者 Qilong Wu Xiu Shen Pengbin Lai Yang Yang Cheng Chao Li Jinbao Zhao 《Science Bulletin》 SCIE EI CAS CSCD 2022年第24期2531-2540,M0004,共11页
High interfacial energy Li^(0)-electrolyte interface contributes to larger Li^(0) nucleation embryos and a more stable interface,so the interfacial energy is essential for highly reversible Li^(0) deposition/stripping... High interfacial energy Li^(0)-electrolyte interface contributes to larger Li^(0) nucleation embryos and a more stable interface,so the interfacial energy is essential for highly reversible Li^(0) deposition/stripping.Herein,a high interfacial-energy artificial solid electrolyte interphase(SEI)with rich LiF embedded in lithiated poly-2-acrylamido-2-methylpropane sulfonic acid(PAMPS-Li)network is designed to realize favorable Li^(0) nucleation and rapid desolvation of Li+simultaneously.The Li-F bonds in LiF(001)exhibit stronger ion-dipole interactions with Li atoms,offering higher interfacial energies.When the growth surface energy and total interfacial energy of Li^(0) are balanced,the high interfacial energy SEI with abundant LiF can promote the formation of larger Li^(0) nucleation embryos.In addition,the PAMPS-Li with immobilized anions presents weaker interaction with Li^(0) and possesses higher polymer-Li interfacial energy,and its amide and sulfonic acid groups exhibit higher binding energies with Li^(+).Therefore,PAMPS-Li can easily promote the Li+to escape from the solvent sheath and weaken the desolvation energy barrier.The highly reversible Li^(0) deposition behavior with restricted side reactions is achieved based on the synergistic modification of high interfacial energy SEI with heterostructure.Most importantly,lifespan of multi-layered Li^(0) pouch cell(330 Wh kg-1)with a low N/P ratio(1.67)is over 100 cycles,verifying its potential practical application. 展开更多
关键词 Crystalline LiF-rich High interfacial energy Large metallic Li^(0) nucleate size Rapid Li^(+) desolvation Pouch cell
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In Situ Formed Tribofilms as Efficient Organic/Inorganic Hybrid Interlayers for Stabilizing Lithium Metal Anodes 被引量:1
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作者 Shaozhen Huang Kecheng Long +6 位作者 Yuejiao Chen Tuoya Naren Piao Qing Xiaobo Ji Weifeng Wei Zhibin Wu Libao Chen 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第12期320-333,共14页
The practical application of Li metal anodes(LMAs)is limited by uncontrolled dendrite growth and side reactions.Herein,we propose a new friction-induced strategy to produce high-performance thin Li anode(Li@CFO).By vi... The practical application of Li metal anodes(LMAs)is limited by uncontrolled dendrite growth and side reactions.Herein,we propose a new friction-induced strategy to produce high-performance thin Li anode(Li@CFO).By virtue of the in situ friction reaction between fluoropolymer grease and Li strips during rolling,a robust organic/inorganic hybrid interlayer(lithiophilic LiF/LiC_(6)framework hybridized-CF_(2)-O-CF_(2)-chains)was formed atop Li metal.The derived interface contributes to reversible Li plating/stripping behaviors by mitigating side reactions and decreasing the solvation degree at the interface.The Li@CFO||Li@CFO symmetrical cell exhibits a remarkable lifespan for 5,600 h(1.0 mA cm^(-2)and 1.0 mAh cm^(-2))and 1,350 cycles even at a harsh condition(18.0 mA cm^(-2)and 3.0 mAh cm^(-2)).When paired with high-loading LiFePO4 cathodes,the full cell lasts over 450 cycles at 1C with a high-capacity retention of 99.9%.This work provides a new friction-induced strategy for producing high-performance thin LMAs. 展开更多
关键词 Lithium metal anode Organic/inorganic hybrid interlayers High current density Fluoropolymer grease Local desolvation environment
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An Air‑Rechargeable Zn Battery Enabled by Organic–Inorganic Hybrid Cathode
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作者 Junjie Shi Ke Mao +10 位作者 Qixiang Zhang Zunyu Liu Fei Long Li Wen Yixin Hou Xinliang Li Yanan Ma Yang Yue Luying Li Chunyi Zhi Yihua Gao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第4期138-152,共15页
Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive attention.To solve the disadvantages of the traditional integrated system,such as highly dependent on energy s... Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive attention.To solve the disadvantages of the traditional integrated system,such as highly dependent on energy supply and complex structure,an airrechargeable Zn battery based on MoS_(2)/PANI cathode is reported.Benefited from the excellent conductivity desolvation shield of PANI,the MoS_(2)/PANI cathode exhibits ultra-high capacity(304.98 mAh g^(−1) in N_(2) and 351.25 mAh g^(−1) in air).In particular,this battery has the ability to collect,convert and store energy simultaneously by an airrechargeable process of the spontaneous redox reaction between the discharged cathode and O2 from air.The air-rechargeable Zn batteries display a high open-circuit voltage(1.15 V),an unforgettable discharge capacity(316.09 mAh g^(−1) and the air-rechargeable depth is 89.99%)and good air-recharging stability(291.22 mAh g^(−1) after 50 air recharging/galvanostatic current discharge cycle).Most importantly,both our quasi-solid zinc ion batteries and batteries modules have excellent performance and practicability.This work will provide a promising research direction for the material design and device assembly of the next-generation self-powered system. 展开更多
关键词 Air-rechargeable MoS_(2)/PANI Cathode desolvation shield Energy storage mechanism Zn batteries module
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膜去溶进样ICP-MS法测定电子级高纯盐酸中痕量金属杂质 被引量:2
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作者 孟蓉 李红华 黄志齐 《质谱学报》 EI CAS CSCD 2005年第z1期5-6,40,共3页
Determination of thirty four trace metal elements in electronic high purity hydrochloric acid by ICP-MS (Standard Condition, Plasma Screen Condition) with membrane desolvation was described. Matrix effects were compen... Determination of thirty four trace metal elements in electronic high purity hydrochloric acid by ICP-MS (Standard Condition, Plasma Screen Condition) with membrane desolvation was described. Matrix effects were compensated by adding rhodium as the internal standard. Detection limits is 0.1 to 100 ng/L; the recovery of the method is 90%-110%. Long term RSD was less than 5%. The results from ICP and ICP-MS are correspondent. ICP-MS improves the accuracy and efficiency of analyses. 展开更多
关键词 ICP-MS electronic high PURITY hydrochloric acid TRACE metal elements membrane desolvation
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Iodine Determination by Microwave Plasma Torch Atomic Emission Spectrometer Coupled with Online Preconcentration Vapor Generation Technique 被引量:4
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作者 FEI Yan-qun LUO Gui-min +4 位作者 FENG Guo-dong CHEN Huan-wen FEI Qiang HUAN Yan-fu JIN Qin-han 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2008年第5期546-549,共4页
This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry (MPT-AES) coupled with online preconcentration vapor generation method. A new desolvation device, multistrand Nafio... This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry (MPT-AES) coupled with online preconcentration vapor generation method. A new desolvation device, multistrand Nafion dryer, was used as the substitute for condenser desolvation system. Some experimental conditions, such as preconcentration time, acidity of sample solution, rinsing solution acidity and dynamic linear range were investigated and optimized. The new desolvation system eliminates the problem of decreasing emission intensity of I(I) 206.238 nm line with the increase of working time on a conventional condenser desolvation system, thus greatly improving the reproducibility. 展开更多
关键词 MPT-AES On-line preconcentration Vapor generation Nation dryer Membrane desolvation
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Electron delocalization-enhanced sulfur reduction kinetics on an MXene-derived heterostructured electrocatalyst
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作者 Yunmeng Li Yinze Zuo +7 位作者 Xiang Li Yongzheng Zhang Cheng Ma Xiaomin Cheng Jian Wang Jitong Wang Hongzhen Lin Licheng Ling 《Nano Research》 SCIE EI CSCD 2024年第8期7153-7162,共10页
Lithium-sulfur(Li-S)batteries mainly rely on the reversible electrochemical reaction of between lithium ions(Li^(+))and sulfur species to achieve energy storage and conversion,therefore,increasing the number of free L... Lithium-sulfur(Li-S)batteries mainly rely on the reversible electrochemical reaction of between lithium ions(Li^(+))and sulfur species to achieve energy storage and conversion,therefore,increasing the number of free Li^(+)and improving the Li^(+)diffusion kinetics will effectively enhance the cell performance.Here,Mo-based MXene heterostructure(MoS_(2)@Mo_(2)C)was developed by partial vulcanization of Mo_(2)C MXene,in which the introduction of similar valence S into Mo-based MXene(Mo_(2)C)can create an electron delocalization effect.Through theoretical simulations and electrochemical characterisation,it is demonstrated that the MoS_(2)@Mo_(2)C heterojunction can effectively promote ion desolvation,increase the amount of free Li^(+),and accelerate Li^(+)transport for more efficient polysulfide conversion.In addition,the MoS_(2)@Mo_(2)C material is also capable of accelerating the oxidation and reduction of polysulfides through its sufficient defects and vacancies to further enhance the catalytic efficiency.Consequently,the Li-S battery with the designed MoS_(2)@Mo_(2)C electrocatalyst performed for 500 cycles at 1 C and still maintained the ideal capacity(664.7 mAh·g^(−1)),and excellent rate performance(567.6 mAh·g^(−1)at 5 C).Under the extreme conditions of high loading,the cell maintained an excellent capacity of 775.6 mAh·g^(−1)after 100 cycles.It also retained 838.4 mAh·g^(−1)for 70 cycles at a low temperature of 0℃,and demonstrated a low decay rate(0.063%).These results indicate that the delocalized electrons effectively accelerate the catalytic conversion of lithium polysulfide,which is more practical for enhancing the behaviour of Li-S batteries. 展开更多
关键词 delocalized electron lithium sulfur batteries MXene-based heterostructures catalytic desolvation multi-catalytic sites
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Efficient Chemical Prelithiation with Modificatory Li^(+) Solvation Structure Enabling Spatially Homogeneous SEI toward High Performance SiO_(x) Anode
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作者 Ruoyang Wang Yuqing Wu +8 位作者 Yifan Niu Qing Yang Haoyu Li Yang Song Benhe Zhong Liwen Yang Ting Chen Zhenguo Wu Xiaodong Guo 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2024年第17期2056-2065,共10页
Chemical prelithiation is widely proven to be an effective strategy to address the low initial coulombic efficiency(ICE)of promising SiO_(x) anode.Though the reagent composition has been widely explored,the Li^(+) sol... Chemical prelithiation is widely proven to be an effective strategy to address the low initial coulombic efficiency(ICE)of promising SiO_(x) anode.Though the reagent composition has been widely explored,the Li^(+) solvation structure,which practically plays the cornerstone role in the prelithiation ability,rate,uniformility,has rarely been explored.A novel environmentally-friendly reagent with weak solvent cyclopentyl methyl ether(CPME)is proposed that enables both improved ICE and spatial homogeneous solid electrolyte interphase(SEl).And the prelithiation behavior and mechanism were explored focused on the Li^(+) solvation structure.Both theoretical investigation and spectroscopic results suggest that weak solvent feature of CPME reduces the solvent coordination number and decreases the Li^(+) desolvation energy. 展开更多
关键词 Lithium-ion battery SiO_(x)anode Prelithiation Weak solvent Homogeneous SEI Energy conversion desolvation energy
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A Review of Solid Electrolyte Interphase(SEI)and Dendrite Formation in Lithium Batteries 被引量:7
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作者 Borong Li Yu Chao +10 位作者 Mengchao Li Yuanbin Xiao Rui Li Kang Yang Xiancai Cui Gui Xu Lingyun Li Chengkai Yang Yan Yu David P.Wilkinson Jiujun Zhang 《Electrochemical Energy Reviews》 SCIE EI CSCD 2023年第1期680-725,共46页
Lithium-metal batteries with high energy/power densities have significant applications in electronics,electric vehicles,and stationary power plants.However,the unstable lithium-metal-anode/electrolyte interface has in... Lithium-metal batteries with high energy/power densities have significant applications in electronics,electric vehicles,and stationary power plants.However,the unstable lithium-metal-anode/electrolyte interface has induced insufficient cycle life and safety issues.To improve the cycle life and safety,understanding the formation of the solid electrolyte interphase(SEI)and growth of lithium dendrites near the anode/electrolyte interface,regulating the electrodeposition/electrostripping processes of Li^(+),and developing multiple approaches for protecting the lithium-metal surface and SEI layer are crucial and necessary.This paper comprehensively reviews the research progress in SEI and lithium dendrite growth in terms of their classical electrochemical lithium plating/stripping processes,interface interaction/nucleation processes,anode geometric evolution,fundamental electrolyte reduction mechanisms,and effects on battery performance.Some important aspects,such as charge transfer,the local current distribution,solvation,desolvation,ion diffusion through the interface,inhibition of dendrites by the SEI,additives,models for dendrite formation,heterogeneous nucleation,asymmetric processes during stripping/plating,the host matrix,and in situ nucleation characterization,are also analyzed based on experimental observations and theoretical calculations.Several technical challenges in improving SEI properties and reducing lithium dendrite growth are analyzed.Furthermore,possible future research directions for overcoming the challenges are also proposed to facilitate further research and development toward practical applications. 展开更多
关键词 Lithium-metal anode Solid electrolyte interphase(SEI) Dendrite formation Lithium batteries Classical electrochemical processes Additives Heterogeneous nucleation Asymmetric processes Solvation structure desolvation In situ characterization of nucleation
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Weakly-solvating electrolytes enable ultralow-temperature (-80°C) and high-power CF_(x)/Li primary batteries 被引量:3
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作者 Hao-Jie Liang Meng-Yuan Su +6 位作者 Xin-Xin Zhao Zhen-Yi Gu Jia-Lin Yang Wei Guo Zhi-Ming Liu Jing-Ping Zhang Xing-Long Wu 《Science China Chemistry》 SCIE EI CAS CSCD 2023年第7期1982-1988,共7页
Fluorinated carbons(CF_(x))/Li primary batteries with high theoretical energy density have been applied as indispensable energy storage devices with no need for rechargeability,yet plagued by poor rate capability and ... Fluorinated carbons(CF_(x))/Li primary batteries with high theoretical energy density have been applied as indispensable energy storage devices with no need for rechargeability,yet plagued by poor rate capability and narrow temperature adaptability in actual scenarios.Herein,benefiting from precise solvation engineering for synergistic coordination of anions and low-affinity solvents,the optimized cyclic ether-based electrolyte is elaborated to significantly facilitate overall reaction dynamics closely correlated to lower desolvation barrier.As a result,the excellent rate(15 C,650 mAh g^(-1))at room-temperature and ultra-lowtemperature performance dropping to-80°C(495 mAh g^(-1)at average output voltage of 2.11 V)is delivered by the end of 1.5 V cut-off voltage,far superior to other organic liquid electrolytes.Furthermore,the CF_(x)/Li cell employing the high-loading electrode(18-22 mg cm^(-2))still yields 1,683 and 1,395 Wh kg^(-1)in the case of-40°C and-60°C,respectively.In short,the novel design strategy for cyclic ethers as basic solvents is proposed to enable the CF_(x)/Li battery with superb subzero performances,which shows great potential in practical application for extreme environments. 展开更多
关键词 CF_(x)/Li primary batteries solvation engineering desolvation barrier ultra-low temperature
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Insight into the influence of ether and ester electrolytes on the sodium-ion transportation kinetics for hard carbon 被引量:2
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作者 Xiuping Yin Zhaomin Wang +5 位作者 Yang Liu Zhixiu Lu Hongli Long Tao Liu Jiujun Zhang Yufeng Zhao 《Nano Research》 SCIE EI CSCD 2023年第8期10922-10930,共9页
The electrochemical performance of hard carbon(HC)materials is closely related to the electrolyte used in the sodium ion batteries(SIBs).Conventional electrolytes carbonate(EC)demonstrates low initial Columbic efficie... The electrochemical performance of hard carbon(HC)materials is closely related to the electrolyte used in the sodium ion batteries(SIBs).Conventional electrolytes carbonate(EC)demonstrates low initial Columbic efficiency(ICE)and poor rate performance,which is one of the main bottlenecks that limits the practical application of HCs.Ether electrolyte(diglyme)was reported to improve the rate performance of HCs.Nevertheless,the underlying mechanism for the excellent rate capability is still lack of in-depth study.In this work,the differences of sodium-ion diffusion between ether and carbonate-base electrolytes in HCs are analyzed layer by layer.Firstly,when sodium-ions are diffused in electrolyte,the diffusion coefficient of sodium-ion in ether electrolyte is about 2.5 times higher than that in ester electrolytes by molecular dynamics(MD)simulation and experimental characterization.Furthermore,when the solvated sodium-ions are diffused into the solid electrolyte interphase(SEI)interface and the HCs material,the enhanced charge transfer kinetics(thin SEI layer(4.6 vs.12 nm)and low RSEI(1.5 vs.24Ω))at the SEI combined with low desolvation energy(0.248 eV)are responsible for high-rate performance and good cycling stability of HC in ether electrolyte.Therefore,high diffusion coefficient,low desolvation energy,and good interface are the intrinsic reasons for enhanced rate performance in ether electrolyte,which also has guiding significance for the design of other high-rate electrolytes. 展开更多
关键词 sodium-ion batteries hard carbon(HC) ether electrolyte desolvation energy transportation kinetics
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The activity of Zn precursors determines the cation exchange reaction kinetics with Ag_(2)S:Zn-doped Ag_(2)S or Ag_(2)S@ZnS QDs
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作者 Zhiyong Tang Hongchao Yang +3 位作者 Ziqiang Sun Yejun Zhang Guangcun Chen Qiangbin Wang 《Nano Research》 SCIE EI CSCD 2023年第10期12315-12322,共8页
Cation exchange(CE)has been emerged as a promising post-synthesis strategy of colloidal nanocrystals.However,it is unclear how the cation precursor affects the CE process and the final colloidal nanocrystals.Herein,we... Cation exchange(CE)has been emerged as a promising post-synthesis strategy of colloidal nanocrystals.However,it is unclear how the cation precursor affects the CE process and the final colloidal nanocrystals.Herein,we utilized two Zn-B Lewis acidbase adduct complexes(B=oleylamine(OAM)and methanol(MeOH))as Zn precursors for CE with Ag_(2)S quantum dots(QDs).Our study revealed that the steric hindrance and complexing capabilities of Zn precursor significantly affect the CE kinetics.As a result,the Zn-doped Ag_(2)S(Zn:Ag_(2)S)and Ag_(2)S@ZnS core–shell QDs were successfully obtained with enormous enhancement of their photoluminescence(PL)intensities.Theoretical simulation showed that the Zn-OAM with higher desolvation energy and spatial hindrance tended to form doped Zn:Ag_(2)S QDs due to the inefficient cation exchange.Whereas the Zn-MeOH with lower exchange barrier promoted the conversion of Ag-S to Zn-S,thus forming Ag_(2)S@ZnS core–shell QDs.We anticipate that this finding will enrich the regulatory approaches of post-synthesis of colloidal nanocrystals with desirable properties. 展开更多
关键词 cation exchange Ag_(2)S quantum dots phase structure desolvation coordination
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Solvating power regulation enabled low concentration electrolyte for lithium batteries 被引量:3
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作者 Linshan Peng Xiangkun Wu +6 位作者 Mengmin Jia Weiwei Qian Xiaoyan Zhang Na Zhou Lan Zhang Cuiying Jian Suojiang Zhang 《Science Bulletin》 SCIE EI CAS CSCD 2022年第21期2235-2244,共10页
Li^(+) solvation structures have a decisive influence on the electrode/electrolyte interfacial properties and battery performances.Reduced salt concentration may result in an organic rich solid electrolyte interface(S... Li^(+) solvation structures have a decisive influence on the electrode/electrolyte interfacial properties and battery performances.Reduced salt concentration may result in an organic rich solid electrolyte interface(SEI)and catastrophic cycle stability,which makes low concentration electrolytes(LCEs)rather challenging.Solvents with low solvating power bring in new chances to LCEs due to the weak salt-solvent interactions.Herein,an LCE with only 0.25 mol L^(-1) salt is prepared with fluoroethylene carbonate(FEC)and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropylether(D_(2)).Molecular dynamics simulations and experiments prove that the low solvating power solvent FEC not only renders reduced desolvation energy to Li^(+) and improves the battery kinetics,but also promotes the formation of a LiF-rich SEI that hinders the electrolyte consumption.Li||Cu cell using the LCE shows a high coulombic efficiency of 99.20%,and LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2)||Li cell also exhibits satisfying capacity retention of 89.93%in 200 cycles,which demonstrates the great potential of solvating power regulation in LCEs development. 展开更多
关键词 Lithium metal batteries Solvating power Low concentration electrolytes desolvation energy FEC
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