• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Chemical Society >Side-Chain Conducting and Phase-Separated Polymeric Binders for High-Performance Silicon Anodes in Lithium-Ion Batteries
【24h】

Side-Chain Conducting and Phase-Separated Polymeric Binders for High-Performance Silicon Anodes in Lithium-Ion Batteries

机译：锂离子电池中高性能硅阳极的侧链导电和相分离的聚合物粘合剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Here we describe a class of electric-conducting polymers that conduct electrons via the side chain π-π stacking. These polymers can be designed and synthesized with different chemical moieties to perform different functions, extremely suitable as a conductive polymer binder for lithium battery electrodes. A class of methacrylate polymers based on a polycyclic aromatic hydrocarbon side moiety, pyrene, was synthesized and applied as an electrode binder to fabricate a silicon (Si) electrode. The electron mobilities for PPy and PPyE are characterized as 1.9 × 10~(-4) and 8.5 × 10~(-4) cm~2 V~(-1) s~(-1), respectively. These electric conductive polymeric binders can maintain the electrode mechanical integrity and Si interface stability over a thousand cycles of charge and discharge. The as-assembled batteries exhibit a high capacity and excellent rate performance due to the self-assembled solid-state nanostructures of the conductive polymer binders. These pyrene-based methacrylate binders also enhance the stability of the solid electrolyte interphase (SEI) of a Si electrode over long-term cycling. The physical properties of this polymer are further tailored by incorporating ethylene oxide moieties at the side chains to enhance the adhesion and adjust swelling to improve the stability of the high loading Si electrode.
机译：在这里，我们描述了一类通过侧链π-π堆叠传导电子的导电聚合物。可以设计和合成具有不同化学部分的这些聚合物以执行不同的功能，非常适合用作锂电池电极的导电聚合物粘合剂。合成了基于多环芳烃侧基的pyr一类甲基丙烯酸酯聚合物，并将其用作电极粘合剂以制造硅（Si）电极。 PPy和PPyE的电子迁移率分别为1.9×10〜（-4）和8.5×10〜（-4）cm〜2 V〜（-1）s〜（-1）。这些导电聚合物粘合剂可以在一千次充电和放电循环中保持电极的机械完整性和Si界面稳定性。由于导电聚合物粘合剂的自组装固态纳米结构，组装电池表现出高容量和优异的倍率性能。这些pyr基甲基丙烯酸酯粘合剂还可以在长期循环中增强Si电极的固体电解质中间相（SEI）的稳定性。通过在侧链上加入环氧乙烷部分以增强粘合力并调节溶胀以改善高负荷硅电极的稳定性，可以进一步调整该聚合物的物理性能。

著录项

  • 来源
    《Journal of the American Chemical Society》 |2015年第7期|2565-2571|共7页
  • 作者

    Sang-Jae Park; Hui Zhao; Guo Ai; Cheng Wang; Xiangyun Song; Neslihan Yuca; Vincent S. Battaglia; Wanli Yang; Gao Liu;

  • 作者单位

    Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States,Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, Guangzhou 510610, Guangdong, P.R. China;

    Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Istanbul Technical University, Energy Institute, Istanbul 34469, Turkey;

    Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

    Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号