Construction of Porous PVDF Coating Layer and Electrochemical Performances of the Corresponding Modified Polyethylene Separators for Lithium Ion Batteries
文献类型：期刊论文
| 作者 | Fang, Li-Feng ; Shi, Jun-Li ; Li, Hao ; Zhu, Bao-Ku ; Zhu, Li-Ping |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2014 |
| 卷号 | 131期号:21 |
| 中文摘要 | To effectively improve the affinity of polyethylene (PE) separators with liquid electrolyte without causing a serious pore blockage and to develop a more suitable technology for the industrial production process, porous polyvinylidene fluoride (PVDF) layer-coated PE separators are prepared by the dip-coating method followed by a dry-cast process. Different from previous investigations, a less volatile solvent and a relatively volatile nonsolvent are used to yield a preferable pore structure. A brief introduction on the pore formation mechanism during the dry-cast process is provided. The pore structure of coating layer is found to be successfully controlled by changing evaporation temperature, nonsolvent content, and PVDF concentration. The porous PVDF coating layer-modified separators show better affinity with liquid electrolyte and thermal stability. Especially, the ionic conductivity of the modified separator/liquid electrolyte system with a suitable porous coating layer on the separator could reach two times as that of PE separator/liquid electrolyte system, and the cell assembled with modified PE separator shows better cycle performances. This modification process is proved to be a facile, controllable, and effective method for PE separator modification. Meanwhile, this work could provide some theoretical and technical guidance for the production process. (C) 2014 Wiley Periodicals, Inc. |
| 公开日期 | 2015-09-20 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/11686]  |
| 专题 | 宁波材料技术与工程研究所_2014专题 |
| 推荐引用方式 GB/T 7714 | Fang, Li-Feng,Shi, Jun-Li,Li, Hao,et al. Construction of Porous PVDF Coating Layer and Electrochemical Performances of the Corresponding Modified Polyethylene Separators for Lithium Ion Batteries[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2014,131(21). |
| APA | Fang, Li-Feng,Shi, Jun-Li,Li, Hao,Zhu, Bao-Ku,&Zhu, Li-Ping.(2014).Construction of Porous PVDF Coating Layer and Electrochemical Performances of the Corresponding Modified Polyethylene Separators for Lithium Ion Batteries.JOURNAL OF APPLIED POLYMER SCIENCE,131(21). |
| MLA | Fang, Li-Feng,et al."Construction of Porous PVDF Coating Layer and Electrochemical Performances of the Corresponding Modified Polyethylene Separators for Lithium Ion Batteries".JOURNAL OF APPLIED POLYMER SCIENCE 131.21(2014). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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