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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Direct electrophoretic deposition of an ultra-strong separator on an anode in a surfactant-free colloidal system for lithium ion batteries
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Direct electrophoretic deposition of an ultra-strong separator on an anode in a surfactant-free colloidal system for lithium ion batteries

机译：用于锂离子电池的无表面活性剂胶体系统中的超强分离器对阳极上的超强分离器的直接电泳沉积

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摘要

A hierarchically laminated nanostructured PVdF-HFP membrane is deposited directly on a carbon anode through efficient, scalable electrophoretic deposition (EPD) in a surfactant-free colloidal system. Lithium ion batteries based on the separator-anode configuration have a well-structured microscopic interface with uniform, reinforced separator/electrode contact. The resulting separator enables a high ionic conductivity of 8.1 x 10(-4) S cm(-1), and exhibits a low thermal shrinkage of 3% after annealing at 160 degrees C for 5 h, a high isotropic mechanical strength (approximate to 33 MPa) and an ultra-high ductility (approximate to 450%). The battery with the separator-anode configuration delivers a discharge capacity of 370 mA h g(-1) (99.5% of the theoretical capacity) at 0.1C, an excellent capacity retention of approximate to 100% after 300 cycles, and a pronounced rate capability of 270 mA h g(-1) at 1C. This work opens up the opportunity to realize both reliable and high-capacity material platforms for next-generation lithium ion batteries.
机译：通过在无表面活性剂胶体系统中通过有效，可伸缩的电泳沉积（EPD）直接沉积分层层压的纳米结构PVDF-HFP膜。基于分离器 - 阳极配置的锂离子电池具有具有均匀，加强分离器/电极接触的结构良好的微观界面。得到的分离器使得高离子电导率为8.1×10（-4）Scm（-​​1），并且在160℃下退火5小时后表现出3％的低热收缩率，高各各位级机械强度（近似33 MPa）和超高延性（近似为450％）。具有分离器 - 阳极配置的电池可在0.1℃下提供370 mA Hg（-1）（理论容量的99.5％）的放电容量，在300次循环后的近似达到100％的优异容量保留，以及发音率能力270 mA hg（-1）在1c。这项工作开辟了实现下一代锂离子电池可靠和高容量的材料平台的机会。

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  • 作者

    Han Yupei; Ye Luhan; Boateng Bismark; Sun Qingwei; Zhen Cheng; Chen Ning; Shi Xingyi; Dickerson James H.; Li Xin; He Weidong;

  • 作者单位

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

    Harvard Univ John A Paulson Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

    Brown Univ Dept Phys Providence RI 02912 USA;

    Harvard Univ John A Paulson Sch Engn &

    Appl Sci Cambridge MA 02138 USA;

    Univ Elect Sci &

    Technol China Sch Phys Chengdu 611731 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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