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Decoding lithium batteries through advanced in situ characterization techniques 被引量:8
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作者 Mei Yang Ruyi Bi +2 位作者 Jiangyan Wang Ranbo Yu Dan Wang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2022年第5期965-989,共25页
Given the energy demands of the electromobility market,the energy density and safety of lithium batteries(LBs)need to be improved,whereas its cost needs to be decreased.For the enhanced performance and decreased cost,... Given the energy demands of the electromobility market,the energy density and safety of lithium batteries(LBs)need to be improved,whereas its cost needs to be decreased.For the enhanced performance and decreased cost,more suitable electrode and electrolyte materials should be developed based on the improved understanding of the degradation mechanisms and structure–performance correlation in the LB system.Thus,various in situ characterization technologies have been developed during the past decades,providing abundant guidelines on the design of electrode and electrolyte materials.Here we first review the progress of in situ characterization of LBs and emphasize the feature of the multi-model coupling of different characterization techniques.Then,we systematically discuss how in situ characterization technologies reveal the electrochemical processes and fundamental mechanisms of different electrode systems based on representative electrode materials and electrolyte components.Finally,we discuss the current challenges,future opportunities,and possible directions to promote in situ characterization technologies for further improvement of the battery performance. 展开更多
关键词 in situ characterization techniques multi-modal coupling lithium batteries electrochemical mechanism
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In-situ/operando characterization techniques in lithium-ion batteries and beyond 被引量:8
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作者 Haoyu Li Shaohua Guo Haoshen Zhou 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2021年第8期191-211,I0005,共22页
Nowadays,in-situ/operando characterization becomes one of the most powerful as well as available means to monitor intricate reactions and investigate energy-storage mechanisms within advanced batteries.The new applica... Nowadays,in-situ/operando characterization becomes one of the most powerful as well as available means to monitor intricate reactions and investigate energy-storage mechanisms within advanced batteries.The new applications and novel devices constructed in recent years are necessary to be reviewed for inspiring subsequent studies.Hence,we summarize the progress of in-situ/operando techniques employed in rechargeable batteries.The members of this large family are divided into three sections for introduction,including bulk material,electrolyte/electrode interface and gas evolution.In each part,various energy-storage systems are mentioned and the related experimental details as well as data analysis are discussed.The simultaneous strategies of various in-situ methods are highlighted as well.Finally,current challenges and potential solutions are concluded towards the rising influence and enlarged appliance of in-situ/operando techniques in the battery research. 展开更多
关键词 In-situ/operando characterization techniques Secondary batteries
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Neutron-based characterization techniques for lithium-ion battery research 被引量:2
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作者 Enyue Zhao Zhi-Gang Zhang +4 位作者 Xiyang Li Lunhua He Xiqian Yu Hong Li Fangwei Wang 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第1期40-61,共22页
During the past decades,Li-ion batteries have been one of the most important energy storage devices.Large-scale energy storage requires Li-ion batteries which possess high energy density,low cost,and high safety.Other... During the past decades,Li-ion batteries have been one of the most important energy storage devices.Large-scale energy storage requires Li-ion batteries which possess high energy density,low cost,and high safety.Other than advanced battery materials,in-depth understanding of the intrinsic mechanism correlated with cell reaction is also essential for the development of high-performance Li-ion battery.Advanced characterization techniques,especially neutron-based techniques,have greatly promoted Li-ion battery researches.In this review,the characteristics or capabilities of various neutron-based characterization techniques,including elastic neutron scattering,quasi-elastic neutron scattering,neutron imaging,and inelastic neutron scattering,for the related Li-ion-battery researches are summarized.The design of in-situ/operando environment is also discussed.The comprehensive survey on neutron-based characterizations for mechanism understanding will provide guidance for the further study of high-performance Li-ion batteries. 展开更多
关键词 Li-ion battery neutron scattering characterization technique
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Study on the stomatal characters of rice plant I. A new technique of samplepre paration for observ ing the stomatal characters of rice leaf 被引量:2
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《Chinese Rice Research Newsletter》 2000年第3期7-8,共2页
关键词 A new technique of samplepre paration for observ ing the stomatal characters of rice leaf Study on the stomatal characters of rice plant I
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Advancements and Challenges in Organic–Inorganic Composite Solid Electrolytes for All‑Solid‑State Lithium Batteries
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作者 Xueyan Zhang Shichao Cheng +4 位作者 Chuankai Fu Geping Yin Liguang Wang Yongmin Wu Hua Huo 《Nano-Micro Letters》 SCIE EI CAS 2025年第1期46-97,共52页
To address the limitations of contemporary lithium-ion batteries,particularly their low energy density and safety concerns,all-solid-state lithium batteries equipped with solid-state electrolytes have been identified ... To address the limitations of contemporary lithium-ion batteries,particularly their low energy density and safety concerns,all-solid-state lithium batteries equipped with solid-state electrolytes have been identified as an up-and-coming alternative.Among the various SEs,organic–inorganic composite solid electrolytes(OICSEs)that combine the advantages of both polymer and inorganic materials demonstrate promising potential for large-scale applications.However,OICSEs still face many challenges in practical applications,such as low ionic conductivity and poor interfacial stability,which severely limit their applications.This review provides a comprehensive overview of recent research advancements in OICSEs.Specifically,the influence of inorganic fillers on the main functional parameters of OICSEs,including ionic conductivity,Li+transfer number,mechanical strength,electrochemical stability,electronic conductivity,and thermal stability are systematically discussed.The lithium-ion conduction mechanism of OICSE is thoroughly analyzed and concluded from the microscopic perspective.Besides,the classic inorganic filler types,including both inert and active fillers,are categorized with special emphasis on the relationship between inorganic filler structure design and the electrochemical performance of OICSEs.Finally,the advanced characterization techniques relevant to OICSEs are summarized,and the challenges and perspectives on the future development of OICSEs are also highlighted for constructing superior ASSLBs. 展开更多
关键词 Composite solid electrolytes Inorganic filler Interfacial stability Li-ion conduction mechanism characterization techniques
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Electrocatalysts with atomic-level site for nitrate reduction to ammonia
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作者 Shuai Yin Rong Cao +4 位作者 Yifan Han Jiachangli Shang Jing Zhang Wei Jiang Guigao Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第9期642-668,共27页
Ammonia(NH_(3))is an important raw material for modern agriculture and industry,being widely demanded to sustain the sustainable development of modern society.Currently,the industrial production methods of NH_(3),such... Ammonia(NH_(3))is an important raw material for modern agriculture and industry,being widely demanded to sustain the sustainable development of modern society.Currently,the industrial production methods of NH_(3),such as the traditional Haber-Bosch process,have drawbacks including high energy consumption and significant carbon dioxide emissions.In recent years,the electrocatalytic nitrate reduction reaction(NO_(3)RR)powered by intermittent renewable energy sources has gradually become a multidisciplinary research hotspot,as it allows for the efficient synthesis of NH_(3)under mild conditions.In this review,we focus on the research of electrocatalysts with atomic-level site,which have attracted attention due to their extremely high atomic utilization efficiency and unique structural characteristics in the field of NO_(3)RR.Firstly,we introduce the mechanism of nitrate reduction for ammonia synthesis and discuss the in-situ characterization techniques related to the mechanism study.Secondly,we review the progress of the electrocatalysts with atomic-level site for nitrate reduction and explore the structure-activity relationship to guide the rational design of efficient catalysts.Lastly,the conclusions of this review and the challenges and prospective of this promising field are presented. 展开更多
关键词 Ammonia synthesis Nitrate reduction Electrocatalysts with atomic-level site Reaction mechanism In-situ characterization techniques
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Synthesis and Characterization of La_(0.8)Sr_(0.2)MnO_(3−δ) Nanostructures for Solid Oxide Fuel Cells
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作者 V.S.Reddy Channu Rudolf Holze Edwin H.Walker 《New Journal of Glass and Ceramics》 2013年第1期29-33,共5页
La0.8Sr0.2MnO3-δ (LSM) perovskite was synthesized using different methods, such as solid state reaction, soft-chemical and sol-gel methods for solid oxide fuel cells (SOFCs) for use as a cathode material. The pristin... La0.8Sr0.2MnO3-δ (LSM) perovskite was synthesized using different methods, such as solid state reaction, soft-chemical and sol-gel methods for solid oxide fuel cells (SOFCs) for use as a cathode material. The pristine material was characterized by X-ray diffraction, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). X-ray diffraction results show that the pure phase of La0.8Sr0.2MnO3-δ (LSM) perovskite was formed at 1250oC. Scanning electron microscopy characterization shows that a highly porous material can be obtained using a soft-chemical method with different 3,3’,3”-nitrilotripropionic acid ( NTP) to metal-ion ratio R. 展开更多
关键词 Porous Materials characterization techniques CATHODE
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Progress and perspective of high-voltage lithium cobalt oxide in lithium-ion batteries 被引量:11
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作者 Qian Wu Bing Zhang Yingying Lu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第11期283-308,I0008,共27页
Lithium cobalt oxide(LiCoO_(2),LCO)dominates in 3C(computer,communication,and consumer)electronics-based batteries with the merits of extraordinary volumetric and gravimetric energy density,high-voltage plateau,and fa... Lithium cobalt oxide(LiCoO_(2),LCO)dominates in 3C(computer,communication,and consumer)electronics-based batteries with the merits of extraordinary volumetric and gravimetric energy density,high-voltage plateau,and facile synthesis.Currently,the demand for lightweight and longer standby smart portable electronic products drives the development of the upper cut-off voltage of LCO-based batteries to further improve the energy density.However,several challenges,including irreversible structural transformation,surface degradation,cobalt dissolution and oxygen evolution along with detrimental side reactions with the electrolyte remain with charging to a high cut-off voltage(>4.2 V vs.Li/Li+),resulting in rapid capacity decay and safety issues.Based on the degradation mechanisms and latest advances of the high-voltage LCO,this review summarizes modification strategies in view of the LCO structure,artificial interface design and electrolytes optimization.Meanwhile,many advanced characterization and monitoring techniques utilized to clarify the structural and interfacial evolution of LCO during charge/discharge process are critically emphasized.Moreover,the perspectives in terms of integrating multiple modification strategies,applying gel and solid-state electrolytes,optimizing the recovery process and scalable production are presented. 展开更多
关键词 LICOO2 Electrode-electrolyte interface Lithium batteries characterization techniques
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Research progress of precise structural regulation of single atom catalyst for accelerating electrocatalytic oxygen reduction reaction 被引量:1
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作者 Minmin Wang Hui Zhang +1 位作者 Yunqi Liu Yuan Pan 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第9期56-72,I0003,共18页
The development and utilization of renewable clean energy can effectively solve the two major problems of energy and environment. As an efficient power generation device that converts hydrogen energy into electric ene... The development and utilization of renewable clean energy can effectively solve the two major problems of energy and environment. As an efficient power generation device that converts hydrogen energy into electric energy, fuel cell has attracted more and more attention. For fuel cells, the oxygen reduction reaction(ORR) at the cathode is the core reaction, and the design and development of high-performance ORR catalysts remain quite challenging. Since the microenvironment of the active center of single atom catalysts(SACs) has an important influence on its catalytic performance, it has been a research focus to improve the ORR activity and stability of electrocatalysts by adjusting the structure of the active center through reasonable structural regulation methods. In this review, we reviewed the preparation and structure–activity relationship of SACs for ORR. Then, the structural precision regulation methods for improving the activity and stability of ORR electrocatalysts are discussed. And the advanced in-situ characterization techniques for revealing the changes of active sites in the electrocatalytic ORR process are summarized. Finally, the challenges and future design directions of SACs for ORR are discussed. This work will provide important reference value for the design and synthesis of SACs with high activity and stability for ORR. 展开更多
关键词 ELECTROCATALYST Oxygen reduction reaction Structure regulation Single atom catalysts In-situ characterization technique
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Rational design of bismuth-based catalysts for electrochemical CO_(2) reduction 被引量:1
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作者 Bo Zhang Yunzhen Wu +3 位作者 Panlong Zhai Chen Wang Licheng Sun Jungang Hou 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2022年第12期3062-3088,共27页
Sustainable conversion of carbon dioxide(CO_(2))to high value-added chemicals and fuels is a promising solution to solve the problem of excessive CO_(2) emissions and alleviate the shortage of fossil fuels,maintaining... Sustainable conversion of carbon dioxide(CO_(2))to high value-added chemicals and fuels is a promising solution to solve the problem of excessive CO_(2) emissions and alleviate the shortage of fossil fuels,maintaining the balance of the carbon cycle in nature.The development of catalytic system is of great significance to improve the efficiency and selectivity for electrochemical CO_(2) conversion.In particular,bismuth(Bi)based catalysts are the most promising candidates,while confronting challenges.This review aims to elucidate the fundamental issues of efficient and stable Bi-based catalysts,constructing a bridge between the category,synthesis approach and electrochemical performance.In this review,the categories of Bi-based catalysts are firstly introduced,such as metals,alloys,single atoms,compounds and composites.Followed by the statement of the reliable and versatile synthetic approaches,the representative optimization strategies,such as morphology manipulation,defect engineering,component and heterostructure regulation,have been highlighted in the discussion,paving in-depth insight upon the design principles,reaction activity,selectivity and stability.Afterward,in situ characterization techniques will be discussed to illustrate the mechanisms of electrochemical CO_(2) conversion.In the end,the challenges and perspectives are also provided,promoting a systematic understanding in terms of the bottleneck and opportunities in the field of electrochemical CO_(2) conversion. 展开更多
关键词 Bi-based catalysts Electrochemical CO_(2)conversion Design principle Reaction activity In situ characterization technique
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Characterization of planar photonic crystals using surface coupling techniques at large wavelengths 被引量:6
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作者 Y.Benachour N.Paraire 《Chinese Optics Letters》 SCIE EI CAS CSCD 2007年第9期501-503,共3页
We report a non-destructive characterization of planar two-dimensional (2D) photonic crystals (PhCs) made in silicon on insulator (SOI) wafers using ellipsometric or Fourier transformed infrared (FTIR) spectro... We report a non-destructive characterization of planar two-dimensional (2D) photonic crystals (PhCs) made in silicon on insulator (SOI) wafers using ellipsometric or Fourier transformed infrared (FTIR) spectroscope. At large wavelengths, devices behave as homogeneous isotropic materials defined by an effective filling factor. The experimental results related to the PhC limited dimensions confirm this characterization. 展开更多
关键词 characterization of planar photonic crystals using surface coupling techniques at large wavelengths
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PMD and CD Characterization of Chirped FBG Using Microwave Photonic Technique
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作者 Xiaoke Yi, Chao Lu, Fang Wei, Yixin Wang, Wende Zhong Network Technology Research Center (S2-B3c-23), Nanyang Technological University. Singapore 639798 Institute for Communications Research, Singapore 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期133-134,共2页
We present and demonstrate experimentally a new method for measuring the polarization-mode-dispersion(PMD) of a Chirped Fiber Bragg Grating. The technique has also been applied to accurate chromatic dispersion evaluat... We present and demonstrate experimentally a new method for measuring the polarization-mode-dispersion(PMD) of a Chirped Fiber Bragg Grating. The technique has also been applied to accurate chromatic dispersion evaluation by removing the influence of PMD. 展开更多
关键词 PMD and CD characterization of Chirped FBG Using Microwave Photonic technique on in CFBG of CD
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S-scheme heterojunction photocatalysts for CO_(2) conversion: Design, characterization and categories
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作者 Aiyun Meng Bicheng Zhu +3 位作者 Yucun Zhong Shuang Zhou Peigang Han Yaorong Su 《Energy Reviews》 2023年第4期63-80,共18页
Photocatalytic CO_(2) conversion into valuable hydrocarbon fuels via solar light is a promising strategy to simul-taneously address energy shortage and environmental pollution.However,the photocatalytic CO_(2) reducti... Photocatalytic CO_(2) conversion into valuable hydrocarbon fuels via solar light is a promising strategy to simul-taneously address energy shortage and environmental pollution.However,the photocatalytic CO_(2) reduction performance is too poor to be practically utilized due to the rapid recombination of photogenerated charge carriers.Constructing step-scheme(S-scheme)heterojunction photocatalysts can facilitate the charge separation and maximize the redox ability,thus remarkably enhancing the photocatalytic CO_(2) reduction activity.This review summarizes the progress of S-scheme heterojunction photocatalysts applied in the photocatalytic CO_(2) reduction reactions.Firstly,we introduce the fundamental design principles and characterization methods.The direct and indirect techniques to confirm the S-scheme charge transfer mechanism are disclosed.Secondly,we divide S-scheme composite photocatalyst into the following categories depending on their compositions:g-C_(3)N_(4)-based,metal-chalcogenide-based,TiO_(2)-based,bismuth-based,other metal oxide-based and other semiconductor-based S-scheme photocatalysts.The synergistic effect of the S-scheme charge transfer pathway as well as the unique intrinsic properties of semiconductor materials on the photocatalytic CO_(2) reduction performance is discussed in detail.Finally,concluding perspectives on the challenges and opportunities for the further exploration of highly efficient S-scheme photocatalysts in photocatalytic CO_(2) conversion are presented. 展开更多
关键词 Step-scheme heterojunction PHOTOCATALYST CO_(2)reduction characterization techniques
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Understanding and unveiling the electro-chemo-mechanical behavior in solid-state batteries
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作者 Yunlei Zhong Xia Zhang +4 位作者 Yong Zhang Peng Jia Yuebin Xi Lixing Kang Zhenjiang Yu 《SusMat》 SCIE EI 2024年第2期75-88,共14页
Solid-state batteries(SSBs)are attracting growing interest as long-lasting,thermally resilient,and high-safe energy storage systems.As an emerging area of battery chemistry,there are many issues with SSBs,including st... Solid-state batteries(SSBs)are attracting growing interest as long-lasting,thermally resilient,and high-safe energy storage systems.As an emerging area of battery chemistry,there are many issues with SSBs,including strongly reductive lithium anodes,oxidized cathodes(state of charge),the thermodynamic stability limits of solid-state electrolytes(SSEs),and the ubiquitous and critical interfaces.In this Review,we provided an overview of the main obstacles in the development of SSBs,such as the lithium anode|SSEs interface,the cathode|SSEs interface,lithium-ion transport in the SSEs,and the root origin of lithium intrusions,as well as the safety issues caused by the dendrites.Understanding and overcoming these obstacles are crucial but also extremely challenging as the localized and buried nature of the intimate contact between electrode and SSEs makes direct detection difficult.We reviewed advanced characterization techniques and discussed the complex ion/electron-transport mechanism that have been plaguing electrochemists.Finally,we focused on studying and revealing the coupled electro-chemo-mechanical behavior occurring in the lithium anode,cathode,SSEs,and beyond. 展开更多
关键词 advanced characterization techniques chemo-mechanical effects INTERFACE
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Advanced characterizations and measurements for sodium-ion batteries with NASICON-type cathode materials 被引量:8
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作者 Yukun Liu Jie Li +4 位作者 Qiuyu Shen Jian Zhang Pingge He Xuanhui Qu Yongchang Liu 《eScience》 2022年第1期10-31,共22页
NASICON (Na superionic conductor)-type cathode materials for sodium-ion batteries (SIBs) have attractedextensive attention due to their mechanically robust three-dimensional (3D) framework, which has sufficient opench... NASICON (Na superionic conductor)-type cathode materials for sodium-ion batteries (SIBs) have attractedextensive attention due to their mechanically robust three-dimensional (3D) framework, which has sufficient openchannels for fast Na^(+) transportation. However, they usually suffer from inferior electronic conductivity and lowcapacity, which severely limit their practical applications. To solve these issues, we need to deeply understand thestructural evolution, redox mechanisms, and electrode/electrolyte interface reactions during cycling. Recently,rapid developments in synchrotron X-ray techniques, neutron-based resources, magnetic resonance, as well asoptical and electron microscopy have brought numerous opportunities to gain deep insights into the Na-storagebehaviors of NASICON cathodes. In this review, we summarize the detection principles of advanced characterization techniques used with typical NASICON-structured cathode materials for SIBs. The special focus is on bothoperando and ex situ techniques, which help to investigate the relationships among phase, composition, andvalence variations within electrochemical responses. Fresh electrochemical measurements and theoretical computations are also included to reveal the kinetics and energy-storage mechanisms of electrodes upon charge/discharge. Finally, we describe potential new developments in NASICON-cathodes with optimized SIB systems,foreseeing a bright future for them, achievable through the rational application of advanced diagnostic methods. 展开更多
关键词 Sodium-ion batteries NASICON-Type cathodes characterization techniques Electrochemical measurements Theoretical computations
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Microstructural characterization and mechanical behavior analysis of 7075-T6 aluminum subjected to simulated lightning strikes 被引量:1
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作者 Luis Henrique SANTOS Weslei Patrick Teodosio SOUSA +1 位作者 Sara Silva Ferreira DE DAFE Pedro Americo Magalhaes JUNIOR 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2021年第12期39-50,共12页
Aircrafts damages caused by lightning strikes have been known since the early days of aviation.However,the physical effects on the aircraft structure are still being investigated.This work seeks to evaluate the lightn... Aircrafts damages caused by lightning strikes have been known since the early days of aviation.However,the physical effects on the aircraft structure are still being investigated.This work seeks to evaluate the lightning strike effects in the aluminum alloy 7075-T6.Samples were submitted to lightning strike simulation in laboratory and the damages evaluated through characterization techniques.Ultrasound and profilometry tests have shown material loss to 0.272 mm depth in the damaged region.In addition,it was detected the material accumulation occurrence in the damage vicinity of the region.Below the damage,it was found a region where metallurgical changes were identified.The tensile and microhardness tests results have shown reduction in the percentage elongation and hardness increasing in the material affected by lightning.These results are corroborated by the X-Ray Diffraction(XRD)and Rietveld Method(red line)that indicated an increasing in dislocation density and micro-deformation in the material matrix.Optical microscopy results have shown the presence of microcracks on the normal and cross-section surface of the samples damaged.The Energy Dispersive X-Ray Spectroscopy(EDXS)and Electron Backscattered Diffraction Test(EBSD)found coarse intermetallic phases and precipitates compounds with dimensions greater than 1 lm in length.They were responsible for nucleation of the microcracks that propagate along the material grain boundaries. 展开更多
关键词 Aircraft structure characterization techniques Lightning strikes PRECIPITATES MICROCRACKS
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Experimental study on the properties of CMTs-incorporated geopolymers prepared at low temperatures
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作者 Jin Quanbin Liu Zhibin +3 位作者 Lu Liangliang Zhang Yun Luo Tingyi Tang Yasen 《Journal of Southeast University(English Edition)》 EI CAS 2024年第3期295-303,共9页
Considering that copper mine tailings(CMTs)are commonly mixed with ordinary Portland cement,fly ash(FA),and kaolin to produce geopolymers,to make full use of CMTs,the properties of geopolymers manufactured under diffe... Considering that copper mine tailings(CMTs)are commonly mixed with ordinary Portland cement,fly ash(FA),and kaolin to produce geopolymers,to make full use of CMTs,the properties of geopolymers manufactured under different material mass ratios and curing methods(standard curing,water bath curing,and 60℃curing)are evaluated with significantly increased dosage of CMTs.Porosity and unconfined compressive strength tests,X-ray diffraction,field emission scanning electron microscopy,and energy dispersive spectroscopy are used to determine the physical and mechanical properties,microstructure,and mineral composition of geopolymers.Finally,costs and CO 2 emissions of specimens with different material mass ratios during the preparation processes are compared.The results show that during the geopolymerization of low-calcium materials,various geopolymer gels,including calcium silicate,calcium silicoaluminate,and mainly sodium silicoaluminate gels,coexist.The solid waste,cost,and carbon dioxide emission reductions can reach 100%,166.3 yuan/t,and 73.3 kg/t,respectively.Under a curing condition of 60℃,the sample with a CMTs mass fraction of 70%and an FA mass fraction of 30%meets the requirements of porosity,compressive strength.The resource utilization of CMT and FA is realized in a more economical way. 展开更多
关键词 copper mine tailings geopolymer solid wastes characterization techniques curing methods carbon dioxide emission
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Doping Strategy in Nickel-Rich Layered Oxide Cathode for Lithium-Ion Battery 被引量:1
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作者 Jiayi Wang Xincheng Lei +4 位作者 Shengnan Guo Lin Gu Xin Wang Aiping Yu Dong Su 《Renewables》 2023年第3期316-340,共25页
Ni-rich layered oxides have been regarded as the most promising cathode material for next-generation high energy density Li-ion batteries because of their advantages in capacity and cost.However,these cathodes suffer ... Ni-rich layered oxides have been regarded as the most promising cathode material for next-generation high energy density Li-ion batteries because of their advantages in capacity and cost.However,these cathodes suffer from irreversible structural degradation,fast capacity attenuation as well as seriously reduced safety in their practical applications.Doping strategies with different elements have been employed to address the above issues.In this review,we summarize the research advances of the elemental doping in a Ni-rich layered oxide cathode.The experimental methods and dopant selection rules are briefly introduced.Then we discuss here the effects of the elemental doping from the aspects of the crystal lattice,electronic structure,nanomorphology,and surface stability.In addition,this review surveys the first-principles calculation and advanced structural characterization techniques,which have played important roles in elucidating the structure-performance correlations.Finally,perspectives regarding the future of doping strategy are given. 展开更多
关键词 lithium-ion battery layered oxide cathode doping strategy advanced characterization techniques
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Recent progress of covalent organic frameworks membranes:Design,synthesis,and application in water treatment 被引量:1
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作者 Xiaolu Liu Yang Li +4 位作者 Zhongshan Chen Hui Yang Suhua Wang Zhenwu Tang Xiangke Wang 《Eco-Environment & Health》 2023年第3期117-130,共14页
To date,significant efforts have been devoted to eliminating hazardous components to purify wastewater through the development of various nanomaterials.Covalent organic frameworks(COFs),an important branch of the poro... To date,significant efforts have been devoted to eliminating hazardous components to purify wastewater through the development of various nanomaterials.Covalent organic frameworks(COFs),an important branch of the porous crystalline family,possess the peculiarity of ultrahigh surface area,adjustable pore size,and facile functionality.Exciting studies from design fabrication to potential applications in water treatment by COF-based membranes(COMs)have emerged.This review summarizes various preparation strategies and synthesis mechanisms for COMs,including layer-by-layer stacking,in situ growth,interfacial polymerization,and electrochemical synthesis,and briefly describes the advanced characterization techniques for COMs.Moreover,the application of COMs in heavy metal removal,dye separation,purification of radionuclides,pollutant detection,sea water desalination,and so on,is described and discussed.Finally,the perspectives on future opportunities for designing COMs in water purification have been proposed. 展开更多
关键词 Covalent organic frameworks Covalent organic frameworks membranes Preparation strategies characterization techniques Water treatment
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Progress in niobium-based oxides as anode for fast-charging Li-ion batteries 被引量:1
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作者 Fuqiang Xie Junling Xu +7 位作者 Qizhong Liao Qingqing Zhang Binyun Liu Lianyi Shao Junjie Cai Xiaoyan Shi Zhipeng Sun Ching-Ping Wong 《Energy Reviews》 2023年第2期62-79,共18页
With the increasing popularity of electric/hybrid vehicles and the rapid development of 3C electronics,there is a growing interest in high-rate energy storage systems.The rapid development and widespread adoption of l... With the increasing popularity of electric/hybrid vehicles and the rapid development of 3C electronics,there is a growing interest in high-rate energy storage systems.The rapid development and widespread adoption of lithiumion batteries(LIBs)can be attributed to their numerous advantages,including high energy density,high operating voltage,environmental friendliness,and lack of memory effect.However,the progress of LIBs is currently hindered by the limitations of energy storage materials,which serve as vital components.Therefore,there is an urgent need to address the development of a new generation of high-rate energy storage materials in order to overcome these limitations and further advance LIB technology.Niobium-based oxides have emerged as promising candidates for the fabrication of fast-charging Li-ion batteries due to their excellent rate capability and long lifespan.This review paper provides a comprehensive analysis of the fundamentals,methodologies,and electrochemistries of niobium-based oxides,with a specific focus on the evolution and creation of crystal phases of Nb_(2)O_(5),fundamental electrochemical behavior,and modification methods including morphology modulation,composite technology,and carbon coating.Furthermore,the review explores Nb_(2)O_(5)-derived compounds and related advanced characterization techniques.Finally,the challenges and issues in the development of niobiumbased oxides for high-rate energy storage batteries are discussed,along with future research perspectives. 展开更多
关键词 Energy storage materials Fast-charging Li-ion batteries Niobium-based oxides Modification Nb_(2)O_(5)-Derived compounds Advanced characterization techniques
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