Lithium ion battery membrane prepared in-site by radiation

WANG Hong; DENG Zhangqiong; SUN Jiazhen

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Lithium ion battery membrane prepared in-site by radiation

更新时间：2023-03-30

- Lithium ion battery membrane prepared in-site by radiation
- Journal of Radiation Research and Radiation Processing Vol. 26, Issue 4, Pages: 199-203(2008)
- 作者机构：
  
  1.绵阳师范学院化学与化学工程学院　绵阳　621000
  2.中国科学院长春应用化学研究所　长春　130022
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WANG Hong, DENG Zhangqiong, SUN Jiazhen. Lithium ion battery membrane prepared in-site by radiation. [J]. Journal of Radiation Research and Radiation Processing 26(4):199-203(2008)
DOI：

WANG Hong, DENG Zhangqiong, SUN Jiazhen. Lithium ion battery membrane prepared in-site by radiation. [J]. Journal of Radiation Research and Radiation Processing 26(4):199-203(2008) DOI：

摘要

为了寻找比传统聚烯烃微孔膜性能更好的可用于锂离子电池的隔膜，对Al,2,O,3,/SiO,2,/ PAN (聚丙烯腈)复合隔膜进行了研究，PAN采用,60,Co γ辐射现场引发聚合生成。膜中Al,2,O,3,/SiO,2,的两性特征，将电解液中的酸性HF（氟化氢）消耗掉，而HF作为现在锂离子电池所用电解液中的杂质是不可避免的。复合膜作为隔膜制备的碳/正极材料锂离子电池不仅具有优良的容量保持性、高温安全性，也显示良好的倍率放电性和耐过充电保护性能。

Abstract

Al,2,O,3,/SiO,2, /PAN composite membrane was prepared as the separator for Li-ion batteries in order to replace the traditional microporous polyolefin membrane. PAN was polymerized by irradiation of ,60,Co γ-ray. The composite membrane has high porosity, and can be well wetted by liquid electrolyte. The amphoteric character of Al,2,O,3,/SiO,2, can scavenge acidic hydrogen fluoride, which is inevitably present in the LiPF,6,-based electrolytes used currently in the Li-ion batteries. With the composite membrane as a separator, the graphite/cathode cell exhibited good capacity retention. It is also found that the Li-ion cell fabricated in this manner not only has stable capacity retention, high temperature safety, but also shows good high-rate performance and overcharge proof performance.

关键词

辐射隔膜锂离子电池离子电导循环性能

Keywords

RadiationSeparatorLi-ion batteryIon conductivityCycle life

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