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Nanostructured Anode Materials for Non-aqueous Lithium Ion Hybrid Capacitors 被引量:7
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作者 Cuiping Han Hongfei li +4 位作者 Ruiying Shi Lei Xu junqin li Feiyu Kang Baohua li 《Energy & Environmental Materials》 SCIE EI CAS 2018年第2期75-87,共13页
The rapid advancement in electronic devices,electric vehicles,and grid storage stations have lead to a high demand for energy storage devices with enhanced power and energy densities as well as extended lifespans.Lith... The rapid advancement in electronic devices,electric vehicles,and grid storage stations have lead to a high demand for energy storage devices with enhanced power and energy densities as well as extended lifespans.Lithium ion hybrid capacitors are constructed with battery-type anodes and capacitor-type cathodes,which enables the direct integration of the high energy from lithium ion batteries and high power and long lifetime from supercapacitors,making lithium ion hybrid capacitor one of the most promising energy storage devices.In the past two decades,tremendous efforts have been put into the search for suitable battery-type anode materials with improved Faradaic reaction kinetics so that it can match with the fast non-Faradaic charging rate of the capacitive cathodes.This review aims to provide an up-to-date and comprehensive summary of the battery-type anode materials for high-performance lithium ion hybrid capacitors.To date,a large variety of battery-type anode materials have been explored with smart material design strategies,such as carbonaceous materials,metal oxides,alloys,sulfides,nitirdes,and Mxenes,etc.,which will be discussed in detail.A perspective to the challenges and future developing trends of lithium ion hybrid capacitors is proposed to close. 展开更多
关键词 BATTERY LITHIUM LIFETIME
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Sensory nerves directly promote osteoclastogenesis by secreting peptidyl-prolyl cis-trans isomerase D(Cyp40)
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作者 junqin li Bin liu +18 位作者 Hao Wu Shuaishuai Zhang Zhuowen liang Shuo Guo Huijie Jiang Yue Song Xing Lei Yi Gao Pengzhen Cheng Donglin li Jimeng Wang Yang liu Di Wang Nazhi Zhan Jing Xu lin Wang Guozhi Xiao liu Yang GuoXian Pei 《Bone Research》 SCIE CAS CSCD 2023年第4期895-906,共12页
Given afferent functions,sensory nerves have recently been found to exert efferent effects and directly alter organ physiology.Additionally,several studies have highlighted the indirect but crucial role of sensory ner... Given afferent functions,sensory nerves have recently been found to exert efferent effects and directly alter organ physiology.Additionally,several studies have highlighted the indirect but crucial role of sensory nerves in the regulation of the physiological function of osteoclasts.Nonetheless,evidence regarding the direct sensory nerve efferent influence on osteoclasts is lacking.In the current study,we found that high levels of efferent signals were transported directly from the sensory nerves into osteoclasts.Furthermore,sensory hypersensitivity significantly increased osteoclastic bone resorption,and sensory neurons(SNs)directly promoted osteoclastogenesis in an in vitro coculture system.Moreover,we screened a novel neuropeptide,Cyp40,using an isobaric tag for relative and absolute quantitation(iTRAQ).We observed that Cyp40 is the efferent signal from sensory nerves,and it plays a critical role in osteoclastogenesis via the aryl hydrocarbon receptor(AhR)-Ras/Raf-p-Erk-NFATc1 pathway.These findings revealed a novel mechanism regarding the influence of sensory nerves on bone regulation,i.e.,a direct promoting effect on osteoclastogenesis by the secretion of Cyp40.Therefore,inhibiting Cyp40 could serve as a strategy to improve bone quality in osteoporosis and promote bone repair after bone injury. 展开更多
关键词 ABSOLUTE promoted finding
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Inhibiting the bipolar effect via band gap engineering to improve the thermoelectric performance in n-type Bi_(2-x)Sb_(x)Te_(3)for solid-state refrigeration 被引量:2
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作者 Dongliang Su Jiahui Cheng +6 位作者 Shan li Shengnan Zhang Tu Lyu Chaohua Zhang junqin li Fusheng liu lipeng Hu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第7期50-58,共9页
To date,the benchmark Bi_(2)Te_(3)-based alloys are still the only commercial material system used for ther-moelectric solid-state refrigeration.Nonetheless,the conspicuous performance imbalance between the p-type Bi_... To date,the benchmark Bi_(2)Te_(3)-based alloys are still the only commercial material system used for ther-moelectric solid-state refrigeration.Nonetheless,the conspicuous performance imbalance between the p-type Bi_(2-x)Sb_(x)Te_(3)and n-type Bi_(2)Te_(3-x)Se_(x) legs has become a major obstacle for the improvement of cooling devices to achieve higher efficiency.In our previous study,novel n-type Bi_(2-x)Sb_(x)Te_(3)alloy has been pro-posed via manipulating donor-like effect as an alternative to mainstream n-type Bi_(2)Te_(3-x)Se_(x).However,the narrow bandgap of Bi_(2-x)Sb_(x)Te_(3)provoked severe bipolar effect that constrained the further improvement of zT near room temperature.Herein,we have implemented band gap engineering in n-type Bi_(1.5)Sb_(0.5)Te_(3)by employing isovalent Se substitution to inhibit the undesired intrinsic excitation and achieve the dis-tinguished room-temperature zT.First,the preferential occupancy of Se at Te^(2)site appropriately enlarges the band gap,thereby concurrently improving the Seebeck coefficient and depressing the bipolar thermal conductivity.In addition,the Se alloying mildly suppresses the compensation mechanism and essentially preserves the already optimized carrier concentration,which maintains the peak zT near room tempera-ture.Moreover,the large strain field and mass fluctuation generated by Se alloying leads to the remark-able reduction of lattice thermal conductivity.Accordingly,the zT value of Bi_(1.5)Sb_(0.5)Te_(2.8)Se_(0.2)reaches 1.0 at 300 K and peaks 1.1 at 360 K,which surpasses that of most well-known room-temperature n-type thermoelectric materials.These results pave the way for n-type Bi_(2-x)Sb_(x)Te_(3)alloys to become a new and promising top candidate for large-scale solid-state cooling applications. 展开更多
关键词 Thermoelectric Bi_(2)Te_(3) Band gap Bipolar effect Point defects
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Observation of table-like magnetocaloric effect and large refrigerant capacity in Nd_(6)Fe_(13)Pd_(1-x)Cu_(x) compounds 被引量:1
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作者 Yusong Du Chaohua Zhang +4 位作者 Youming Lu junqin li Gang Cheng Jiang Wang Guanghui Rao 《Journal of Rare Earths》 SCIE EI CAS CSCD 2022年第4期660-669,I0006,共11页
The table-like magnetocaloric effect is significant for the magnetic refrigeration applications above 20 K based on the Ericsson cycle.Herein,we prepared a series of Nd_(6)Fe_(13)Pd_(1-x)Cu_(x)(x=0.05,0.1,0.15)compoun... The table-like magnetocaloric effect is significant for the magnetic refrigeration applications above 20 K based on the Ericsson cycle.Herein,we prepared a series of Nd_(6)Fe_(13)Pd_(1-x)Cu_(x)(x=0.05,0.1,0.15)compounds by the arc-melting method.These compounds show the single crystalline phase in the tetragonal Nd_(6)Fe_(13)Si-type structure with the space group I4/mcm.A magnetic phase transition from ferromagnetism to antiferromagnetism and a metamagnetic transition from the antiferromagnetic state to the ferromagnetic state are observed in each of the compounds.The compounds exhibit table-like magnetocaloric effects with large refrigerant capacities.A constantΔSM in a temperature span of 40 K in the Nd_(6)Fe_(13)Pd_(0.85)Cu_(0.15) compound are observed.For a field change of 0–5 T,the peak values of–ΔS_(M) for the Nd_(6)Fe_(13)Pd_(0.95)Cu_(0.05),Nd_(6)Fe_(13)Pd_(0.90)Cu_(0.10),and Nd_(6)Fe_(13)Pd_(0.85)Cu_(0.15) compounds are estimated to be 4.8,4.6 and 4.4 J/(kg·K)with corresponding refrigerant capacity values of 323,331 and 316 J/kg,respectively.The obtained table-like magnetocaloric effects with large refrigerant capacities as well as fairly small thermal and magnetic hysteresis deem these series of compounds good candidates for single-phase magnetic refrigeration based on the Ericsson cycle. 展开更多
关键词 Rare earth-based compound Crystal structure Magnetic transition Magnetocaloric effect
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熵工程提高(GeTe)_(x)(AgSb_(0.5)Bi_(0.5)Te_(2))_(1-x)的热电性能和显微硬度 被引量:4
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作者 钟锦璇 梁格格 +6 位作者 成家回 敖伟琴」 张朝华 李钧钦 刘福生 张胜楠 胡利鹏 《Science China Materials》 SCIE EI CAS CSCD 2023年第2期696-706,共11页
作为一种材料基因特性的内禀属性,构型熵是材料基因组中一个新兴的指征因子.设计具有高构型熵的多组元热电材料,可以通过严重的晶格畸变显著降低晶格热导率,并通过提高晶体对称性改善塞贝克系数.然而,高构型熵也造成了载流子迁移率的恶... 作为一种材料基因特性的内禀属性,构型熵是材料基因组中一个新兴的指征因子.设计具有高构型熵的多组元热电材料,可以通过严重的晶格畸变显著降低晶格热导率,并通过提高晶体对称性改善塞贝克系数.然而,高构型熵也造成了载流子迁移率的恶化,从而限制了zT值的改善.本文通过在众所周知的(GeTe)_(1-x)(AgSbTe_(2))_(x),即TAGS合金中用Bi取代一半的Sb,设计了(GeTe)_(1-x)(AgSb_(0.5)Bi_(0.5)Te_(2))_(x),又称TABGS合金,以证明熵工程的有效性.鉴于TAGS合金的载流子平均自由程较低,已接近Mott-Ioffe-Regel极限,进一步的Bi置换和构型熵增加不会再损害载流子迁移率.此外,通过高构型熵抑制菱方-立方相变和降低的载流子浓度有助于大幅提高Seebeck系数.而且,AgSb_(0.5)Bi_(0.5)Te_(2)合金化诱导的多尺度微观结构和减小的声速有效地抑制了晶格热导率.因此,(GeTe)_(0.80)(AgSb_(0.5)Bi_(0.5)Te_(2))_(0.20)的最高zT值在723 K达到了1.60,300到773 K之间的平均zTave值达到了1.23.同时,由于固溶硬化其室温维氏硬度达到了2.21 GPa.这些结果强调了熵工程在提高热电性能方面的有效性,特别是对大量具有本征低载流子迁移率的材料而言. 展开更多
关键词 载流子迁移率 固溶硬化 热电性能 晶格热导率 晶体对称性 平均自由程 塞贝克系数 材料基因组
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