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题名: Preparation of poly(vinyl alcohol)-based separator with pore-forming additive for lithium-ion batteries
作者: Xiao, Wei;  Zhang, Kaiyue;  Liu, Jianguo;  Yan, Chuanwei
发表日期: 2017-12-1
摘要: In this work, poly(vinyl alcohol) (PVA)-based separators with microporous structure were prepared from a casting solution composed of PVA resin, water as solvent, and poly(vinyl pyrrolidone) (PVP) polymer as pore controlling additive by non-solvent induced phase separation (NIPS) wet-process and investigated in lithium-ion batteries. The effects of PVP on the morphology and properties of the separator, such as porosity, electrolyte wettability, thermal stability and battery performance (discharge capacity, C-rate capability and cycleability) were systematically analyzed. Results show that PVP induced more pores on the bottom surfaces and the electrolyte uptake, ionic conductivity was further improved. Finally, a 10 wt% PVA-based separator with PVP solid content of 6 wt% exhibited greatly improved porosity, electrolyte uptake, ion conductivity and thermal resistance, resulting in the cell with high safety performance and matched electrochemical performance. The results demonstrated that the PVA-based separator with PVP as pore controlling additive can be a successful candidate serving as an effective separator for lithium-ion battery. Additionally, the present method of producing the microporous separator for LIBs is simple, environmentally benign and economically viable.
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Xiao, Wei,Zhang, Kaiyue,Liu, Jianguo,et al. Preparation Of Poly(vinyl Alcohol)-based Separator With Pore-forming Additive For Lithium-ion Batteries[J]. Springer,2017,28(23):17516-17525.

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