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首页> 外文期刊>Journal of power sources >Effect of polyimide binder on electrochemical characteristics of surface-modified silicon anode for lithium ion batteries
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Effect of polyimide binder on electrochemical characteristics of surface-modified silicon anode for lithium ion batteries

机译：聚酰亚胺粘结剂对锂离子电池表面改性硅阳极电化学性能的影响

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摘要

Si nanostructures with high surface area are prepared by Ag-assisted chemical etching, and then employed as an anode material for lithium ion batteries. The use of the surface-modified Si, which has four times higher surface area than its pristine counterpart, leads to the enhancement of electrochemical performance characteristics such as discharge capacity and coulombic efficiency. In order to optimize the electrode constituents, two different binders, poly-vinylidine difluoride (PVdF) and polyimide (PI), are evaluated on the basis of electrochemical and physical tests. In-situ dilatometer and nano-indentation studies during repeated charging and discharging cycles for the different binders reveal more stability and recuperative capability against physical stress with the PI binder than with the PVdF. The optimized active structure combined with the film-like binder plays an important role in enhancing the electrochemical performance.
机译：通过Ag辅助化学刻蚀制备具有高表面积的Si纳米结构，然后将其用作锂离子电池的负极材料。具有比其原始对应物高四倍的表面积的表面改性的Si的使用导致电化学性能特征如放电容量和库伦效率的增强。为了优化电极成分，在电化学和物理测试的基础上评估了两种不同的粘合剂，聚偏二氟乙烯（PVdF）和聚酰亚胺（PI）。在重复充电和放电循环过程中，对不同粘合剂进行的原位膨胀计和纳米压痕研究显示，与PVdF相比，PI粘合剂对物理应力的稳定性和恢复能力更高。与膜状粘合剂结合的优化的活性结构在增强电化学性能中起重要作用。

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  • 来源
    《Journal of power sources》 |2013年第15期|521-526|共6页
  • 作者

    Jung Sub Kim; Wonchang Choi; Kyu Young Cho; Dongjin Byun; JongChoo Lim; Joong Kee Lee;

  • 作者单位

    Center for Energy Convergence, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea,Department of Material Science & Engineering, Korea University, Seoul 136-713, Republic of Korea;

    Center for Energy Convergence, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea;

    Center for Energy Convergence, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea,Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, 3-26 Pil-Dong, Chung-Gu, Seoul 100-715, Republic of Korea;

    Department of Material Science & Engineering, Korea University, Seoul 136-713, Republic of Korea;

    Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, 3-26 Pil-Dong, Chung-Gu, Seoul 100-715, Republic of Korea;

    Center for Energy Convergence, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Silicon; Anode; Binder; Lithium ion battery;

    机译：硅;阳极;活页夹锂离子电池;

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