检索结果-南通市图书馆

Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices

npj Computational Materials 2018年第1期4卷 462-476页

作者： Chilin Li Keyi Chen Xuejun Zhou joachim maier State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050China University of Chinese Academy of Sciences Beijing 100039China Max Planck Institute for Solid State Research Heisenbergstraße 1D-70569 StuttgartGermany

Exploring electrochemically driven conversion reactions for the development of novel energy storage materials is an important topic as they can deliver higher energy densities than current Li-ion battery ***-type fluorides promise particularly high energy densities by involving the light and small fluoride anion,and bond breaking can occur at relatively low Li activity(i.e.,high cell voltage).Cells based on such electrodes may become competitors to other envisaged alternatives such as Lisulfur or Li-air systems with their many unsolved thermodynamic and kinetic *** conversion reactions are typically multiphase redox reactions characterized by nucleation and growth processes along with pronounced interfacial and mass transport *** significant overpotentials and nonequilibrium reaction pathways are *** this review,we summarize recent findings in terms of phase evolution phenomena and mechanistic features of(oxy)fluorides at different redox stages during the conversion process,enabled by advanced characterization technologies and simulation *** can be concluded that well-designed nanostructured architectures are helpful in mitigating kinetic problems such as the usually pronounced voltage *** this context,doping and open-framework strategies are *** these tools,simple materials that are unable to allow for substantial Li nonstoichiometry(e.g.,by Li-insertable channels)may be turned into electroactive materials.

关键词： fluoride energy breaking

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhanced Pseudo‑Capacitive Contributions to High‑Performance Sodium Storage in TiO2/C Nanofibers via Double Effects of Sulfur Modification

引用

Nano-Micro Letters 2020年第12期12卷 1-12页

作者： Yan Zhang Yuanye Huang Vesna Srot Peter A.van Aken joachim maier Yan Yu Max Planck Institute for Solid State Research Stuttgart 70569Germany Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringKey Laboratory of Materials for Energy ConversionChinese Academy of Sciences(CAS)University of Science and Technology of ChinaHefei 230026AnhuiPeople’s Republic of China Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of Sciences(CAS)Dalian 116023LiaoningPeople’s Republic of China

Pseudo-capacitive mechanisms can provide higher energy densities than electrical double-layer capacitors while being faster than bulk storage ***,they suffer from low intrinsic electronic and ion conductivities of the active ***,taking advantage of the combination of TiS2 decoration,sulfur doping,and a nanometer-sized structure,as-spun TiO2/C nanofiber composites are developed that enable rapid transport of sodium ions and electrons,and exhibit enhanced pseudo-capacitively dominated *** a scan rate of 0.5 mV s−1,a high pseudo-capacitive contribution(76%of the total storage)is obtained for the S-doped TiS2/TiO2/C electrode(termed as TiS2/S-TiO2/C).Such enhanced pseudocapacitive activity allows rapid chemical kinetics and significantly improves the high-rate sodium storage performance of *** TiS2/S-TiO2/C composite electrode delivers a high capacity of 114 mAh g−1 at a current density of 5000 mA g−*** capacity maintains at high level(161 mAh g−1)even after 1500 cycles and is still characterized by 58 mAh g−1 at the extreme condition of 10,000 mA g−1 after 10,000 cycles.

关键词： Sodium-ion battery Pseudo-capacitive Anodes TiO2/C nanofibers Sulfur doped

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Benefits of Nanostructuring Electrodes for High-Energy and High-Power Lithium Batteries

引用

复旦学报（自然科学版） 2007年第5期46卷 666-页

作者： joachim maier Max Planck Institute for Solid State Research D-70569 StuttgartGermany

1 Results One of the greatest challenges for our society is providing powerful electrochemical energy storage devices with both high energy and high power densities. Rechargeable lithium-based batteries are amongst the most promising candidates in terms of energy density,the achievement of high power density is hindered by kinetic problems of the electrode *** contribution that emphasizes the power of nanostructuring for electrodes in lithium-based batteries,deals with several nanostructured ...

关键词： high-energy high-power lithium batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Carbon encapsulated Sn and CuP2 composites with high-energy density for Na ion batteries

Carbon encapsulated Sn and CuP2 composites with high-energy ...

引用

中国化学会2019能源材料和缺陷化学研讨会

作者： Shuangqiang Chen joachim maier Yan Yu Max Planck Institute for Solid State Research Department of Environment and Chemical Engineering Shanghai University

Sodium-ion batteries(SIB) are regarded as the most promising competitors to lithium-ion batteries in spite of expected electrochemical disadvantages. Here a "cross-linking" strategy and "spaceconfinement" strategy are proposed to mitigate the typical SIB problems. We present a SIB full battery that exhibits high working potential and high energy density with good cycle life. The anode is composed of cross-linking hollow carbon sheet encapsulated CuP nanoparticles(CHCS-CuP) and a cathode of carbon coated NaV(PO)F(C-NVPF). The synthesis of porous carbon nanocage-Sn(PCNCs-Sn) nanocomposites as anodes of SIBs, demonstrating a high capacity of 828 mAh g at 40 mA g. Post-mortem analysis reveals that the cross-linking hollow carbon sheet structure as well as the initially formed SEI layers are well preserved. Theoretical calculations indicated that the pulverization of bare Sn electrodes could be ascribed to strong bonds formed between amorphous carbon and the discharge product(NaSn), which also deteriorated the conductivity. We believe that the presented battery system provides significant progress regarding practical application of SIB.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Cross-Linking Hollow Carbon Sheet Encapsulated CuP2 Nanocomposites for High Energy Density Sodium-Ion Batteries

Cross-Linking Hollow Carbon Sheet Encapsulated CuP2 Nanocomp...

引用

中国化学会第三届中国能源材料化学研讨会

作者： Shuangqiang Chen Feixiang Wu Laifa Shen Yuanye Huang joachim maier Yan Yu Max Planck Institute for Solid State Research School of Environment and Chemical Engineering Shanghai University Department of Materials Science and Engineering University of Science and Technology of ChinaCAS Key Laboratory of Materials for Energy Conversion

Sodium-ion batteries(SIB) are regarded as the most promising competitors to lithium-ion batteries in spite of expected electrochemical *** a "cross-linking" strategy is proposed to mitigate the typical SIB *** present a SIB full battery that exhibits a working potential of 3.3 V and an energy density of 180 Wh kg with good cycle *** anode is composed of cross-linking hollow carbon sheet encapsulated CuP nanoparticles(CHCS-CuP) and a cathode of carbon coated NaV(PO)F(C-NVPF).For the preparation of the CHCS-CuP2 nanocomposites,we develop an in situ phosphorization approach,which is superior to mechanical *** CHCS-CuP nanocomposites deliver a high reversible capacity of 451 mAh g at 80 mA g,showing an excellent capacity retention ratio of 91% in 200 cycles together with good rate capability and stable cycling *** mortem analysis reveals that the cross-linking hollow carbon sheet structure as well as the initially formed SEI layers are well ***,the inner electrochemical resistances do not significantly *** believe that the presented battery system provides significant progress regarding practical application of SIB.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

一种新型锗/碳纳米管-纳米复合材料用于储锂材料

一种新型锗/碳纳米管-纳米复合材料用于储锂材料

引用

中国化学会第27届学术年会

作者：张中一谷林 joachim maier 崔光磊中国科学院青岛生物能源与过程所马普学会

＜正＞本文报道了一种新型的纳米复合材料Ge/碳纳米管（n-Ge/CNTs）。在这种纳米复合材料中,锗纳米颗粒主要包裹在碳纳米管的内部,碳纳米管在充放电过程中缓解了锗的体积形

关键词：碳纳米管锗负极纳米结构

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

基于混合(电子和离子)传输构筑高效离子电池电极材料的研究

基于混合(电子和离子)传输构筑高效离子电池电极材料的研究

引用

全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者：崔光磊刘志宏王海波陈骁 joachim maier 中科院青岛生物能源与过程研究所

锂在电极材料中的储存过程(即扩散过程)符合电中性的原则,即一个锂离子扩散到电极材料中必须伴随一个电子从电极材料传输到集流体中。因此,高效锂离子电池的电极材料必须是一种混合传输材料(即是电子和离子的混合传输材料)。碳材料是一...

锂在电极材料中的储存过程(即扩散过程)符合电中性的原则,即一个锂离子扩散到电极材料中必须伴随一个电子从电极材料传输到集流体中。因此,高效锂离子电池的电极材料必须是一种混合传输材料(即是电子和离子的混合传输材料)。碳材料是一种常见的低成本的混合传输材料(离子扩散系数约10

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：