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Preparation and performance study of a PVDF-LATP ceramic composite polymer electrolyte membrane for solid-state batteries

机译：固态电池PVDF-Latp陶瓷复合聚合物电解质膜的制备及性能研究

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摘要

Recently, safety issues in conventional organic liquid electrolytes and the interface resistance between the electrode and electrolyte have been the most challenging barriers for the expansion of lithium batteries to a wide range of applications. Here, an ion-conductive PVDF-based composite polymer electrolyte (CPE) consisting of lithium aluminum germanium phosphate (Li1.3Al0.3Ti1.7(PO4)(3)) and polyvinylidene fluoride (PVDF) is prepared on a Li metal anode via a facile casting method. The ionic conductivity and electrochemical stability were enhanced by incorporating an appropriate amount of LATP into the PVDF-based composite polymer electrolyte, and the optimum content of LATP in the hybrid solid electrolyte was approximately 90 wt%. The corresponding solid-state battery based on an SEI-protected Li anode, the PVDF-LATP electrolyte, and a LiMn2O4 (LMO) cathode exhibited excellent rate capability and long-term cycling performance, with an initial discharge capacity of 107.4 mA h g(-1) and a retention of 91.4% after 200 cycles.
机译：最近，传统有机液体电解质中的安全问题和电极和电解质之间的界面电阻是最具挑战性的障碍，用于锂电池扩展到各种应用。这里，在Li金属阳极通孔中制备由磷酸铝锗（Li1.3Al0.3Ti1.7（PO4））和聚偏二氟乙烯（PVDF）组成的离子导电PVDF基复合聚合物电解质（CPE）。一个容易铸造方法。通过将适量的LATP掺入PVDF基复合聚合物电解质中，增强了离子电导率和电化学稳定性，并且杂交固体电解质中LATP的最佳含量约为90wt％。基于SEI保护的LI阳极，PVDF-LATP电解质和LIMN2O4（LMO）阴极的相应固态电池表现出优异的速率能力和长期循环性能，初始放电容量为107.4 mA Hg（ - 1）在200次循环后保持91.4％的保留。

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  • 来源
    《RSC Advances》 |2018年第71期|共7页
  • 作者

    Liang Xinghua; Han Di; Wang Yunting; Lan Lingxiao; Mao Jie;

  • 作者单位

    Guangxi Univ Sci &

    Technol Guangxi Key Lab Automobile Components &

    Vehicle T Liuzhou 545006 Peoples R China;

    Guangxi Univ Sci &

    Technol Guangxi Key Lab Automobile Components &

    Vehicle T Liuzhou 545006 Peoples R China;

    Guangxi Univ Sci &

    Technol Guangxi Key Lab Automobile Components &

    Vehicle T Liuzhou 545006 Peoples R China;

    Guangxi Univ Sci &

    Technol Guangxi Key Lab Automobile Components &

    Vehicle T Liuzhou 545006 Peoples R China;

    Guangdong Inst New Mat Natl Engn Lab Modern Mat Surface Key Lab Modern Surface Engn Technol Guangdong Pro Guangzhou 510651 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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