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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.
2017-12-01
Source PublicationSPRINGER
ISSN0957-4522
Volume28Issue:23Pages:17516-17525
AbstractIn 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.
description.department[xiao, wei ; zhang, kaiyue ; liu, jianguo ; yan, chuanwei] chinese acad sci, inst met res, lab corros & protect, shenyang 110016, liaoning, peoples r china
Subject AreaEngineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationNational Science Foundation of China [21676282, 21373009]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78957
Collection中国科学院金属研究所
Corresponding AuthorXiao, W (reprint author), Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
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.
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