Preparation and performance of poly(vinyl alcohol) porous separator for lithium-ion batteries
Xiao, Wei; Zhao, Lina; Gong, Yaqun; Liu, Jianguo; Yan, Chuanwei
Corresponding AuthorXiao, Wei(
AbstractPoly(vinyl alcohol) (PVA) separator with highly developed porous structure is facilely prepared by a non-solvent induced phase separation (NIPS) wet-process and investigated in lithium-ion batteries. In this method, deionized water and ethanol are used as solvent and non-solvent for PVA material, respectively, and no pore forming additives are employed. Systematical investigations including morphology characterization, porosity measurement, electrolyte contact angle testing, electrolyte uptake/retention examination, and thermal shrinkage testing are carried out. The results demonstrate that this PVA separator possesses notable features, such as uniform and porous surface morphology, symmetric interconnected porous structure all through the separator thickness, and excellent electrolyte wett-ability, thus resulting in superior electrolyte adsorption/retention capacity, lower thermal shrinkage, and higher ionic conductivity, in comparison to the commercial polypropylene (PP) separator. Based on the above advantages, the PVA separator exhibits better electrochemical performances, such as the discharge C-rate capability and cycling performance, as compared to PP separator. This research presents a low-cost and environment-friendly approach to prepare a high performance separator, which is demonstrated to be a good candidate for lithium-ion batteries. (C) 2015 Elsevier B.V. All rights reserved.
KeywordLithium ion battery Poly(vinyl alcohol) separator Phase separation Thermal stability Electrochemical performance
Funding OrganizationNational Natural Science Foundation of China
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[21306213]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
WOS IDWOS:000354490700024
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Document Type期刊论文
Corresponding AuthorXiao, Wei
AffiliationChinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Wei,Zhao, Lina,Gong, Yaqun,et al. Preparation and performance of poly(vinyl alcohol) porous separator for lithium-ion batteries[J]. JOURNAL OF MEMBRANE SCIENCE,2015,487:221-228.
APA Xiao, Wei,Zhao, Lina,Gong, Yaqun,Liu, Jianguo,&Yan, Chuanwei.(2015).Preparation and performance of poly(vinyl alcohol) porous separator for lithium-ion batteries.JOURNAL OF MEMBRANE SCIENCE,487,221-228.
MLA Xiao, Wei,et al."Preparation and performance of poly(vinyl alcohol) porous separator for lithium-ion batteries".JOURNAL OF MEMBRANE SCIENCE 487(2015):221-228.
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