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首页> 外文期刊>Advanced energy materials >Enhanced Ion Conductivity in Conducting Polymer Binder for High-Performance Silicon Anodes in Advanced Lithium-Ion Batteries
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Enhanced Ion Conductivity in Conducting Polymer Binder for High-Performance Silicon Anodes in Advanced Lithium-Ion Batteries

机译：先进锂离子电池中高性能硅阳极的导电聚合物粘合剂中增强的离子电导率

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摘要

Polymer binders with high ion and electron conductivities are prepared by assembling ionic polymers (polyethylene oxide and polyethylenimine) onto the electrically conducting polymer poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) chains. Crosslinking, chemical reductions, and electrostatics increase the modulus of the binders and maintain the integrity of the anode. The polymer binder shows lithium-ion diffusivity and electron conductivity that are 14 and 90 times higher than those of the widely used carboxymethyl cellulose (with acetylene black) binder, respectively. The silicon anode with the polymer binder has a high reversible capacity of over 2000 mA h g(-1) after 500 cycles at a current density of 1.0 A g(-1) and maintains a superior capacity of 1500 mA h g(-1) at a high current density of 8.0 A g(-1).
机译：通过将离子聚合物（聚环氧乙烷和聚乙烯亚胺）组装到导电聚合物聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）链上，可以制备具有高离子和电子电导率的聚合物粘合剂。交联，化学还原和静电会增加粘合剂的模量，并保持阳极的完整性。聚合物粘合剂的锂离子扩散率和电子传导率分别比广泛使用的羧甲基纤维素（带有乙炔黑）粘合剂高14倍和90倍。带有聚合物粘合剂的硅阳极在500次循环后在1.0 A g（-1）的电流密度下具有2000 mA hg（-1）的高可逆容量，并在1500 mA hg（-1）的条件下保持优异的容量8.0 A g（-1）的高电流密度。

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  • 来源
    《Advanced energy materials》 |2018年第11期|1702314.1-1702314.8|共8页
  • 作者

    Zeng Wenwu; Wang Lei; Peng Xiang; Liu Tiefeng; Jiang Youyu; Qin Fei; Hu Lin; Chu Paul K.; Huo Kaifu; Zhou Yinhua;

  • 作者单位

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    City Univ Hong Kong, Dept Phys, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    City Univ Hong Kong, Dept Phys, Tat Chee Ave, Kowloon, Hong Kong, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    conducting polymers; ion conductivity; large capacity; lithium-ion batteries; Si anodes;

    机译：导电聚合物;离子电导率;大容量;锂离子电池;硅阳极;

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