• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Morphology optimizing of polyvinylidene fluoride (PVDF) nanofiber separator for safe lithium-ion battery
【24h】

Morphology optimizing of polyvinylidene fluoride (PVDF) nanofiber separator for safe lithium-ion battery

机译：Morphology optimizing of polyvinylidene fluoride (PVDF) nanofiber separator for safe lithium-ion battery

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

摘要

Commercial polyolefin separator cannot guarantee the safety of lithium-ion batteries at high temperatures due to their poor thermal stability. All kinds of nanofiber membranes with high thermal stability become the focus. In this paper, we have prepared PVDF nanofiber membrane by electrospinning method and have studied the relationship between the electrochemical performance and nanofiber morphology in detail. It is found that the morphology of PVDF is transformed from ball-like to various nanofiber with increasing the concentration of spinning solution. As a result, the PVDF nanofiber membrane (24 wt%-HP) prepared from spinning solution with the concentration of 24 wt% is composed of coarse nanofiber and fine nanofiber, which exhibits better electrochemical properties, such as cycling stability (300 cycles) and ionic conductivity (1.65 mS cm(-1)). LiCoO2/Li cells based on PVDF nanofiber separators have higher discharge capacity even at the current density of 5 C-rate, superior than the cells based on PE separator. It is inspiring for high-energy-density battery safety to use this PVDF nanofiber separator.

著录项

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