Preparation of poly(vinyl alcohol)-based separator with pore-forming additive for lithium-ion batteries

CORC > 金属研究所 > 中国科学院金属研究所

	Preparation of poly(vinyl alcohol)-based separator with pore-forming additive for lithium-ion batteries
	Xiao, Wei; Zhang, Kaiyue; Liu, Jianguo; Yan, Chuanwei; Xiao, W (reprint author), Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China.
刊名	SPRINGER
	2017-12-01
卷号	28 期号:23 页码:17516-17525
ISSN号	0957-4522
英文摘要	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.; 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.
学科主题	Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
语种	英语
资助机构	National Science Foundation of China [21676282, 21373009]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78957]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xiao, W (reprint author), Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	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.
APA	Xiao, Wei,Zhang, Kaiyue,Liu, Jianguo,Yan, Chuanwei,&Xiao, W .(2017).Preparation of poly(vinyl alcohol)-based separator with pore-forming additive for lithium-ion batteries.SPRINGER,28(23),17516-17525.
MLA	Xiao, Wei,et al."Preparation of poly(vinyl alcohol)-based separator with pore-forming additive for lithium-ion batteries".SPRINGER 28.23(2017):17516-17525.