Preparation and properties of composite separators with asymmetric structures for alkaline batteries

IMR OpenIR

	Preparation and properties of composite separators with asymmetric structures for alkaline batteries
	Xiao, Wei; Zhao, Lina; Gong, Yaqun; Wang, Hong; Liu, Jianguo; Yan, Chuanwei; wxiao@imr.ac.cn
	2015
发表期刊	RSC ADVANCES
ISSN	2046-2069
卷号	5 期号:67 页码:54742-54748
摘要	A novel asymmetric separator with high electrolyte wettability and chemical stability was developed for alkaline batteries. This separator was fabricated from an electrolyte-absorbing layer (cellulose nonwoven, CN) and an alkali-resistant layer (PVdF-ZrO2 matrix), which were integrated together by a point-bonded method using polyvinyl alcohol fibers as the binder. The characteristic properties of the composite separator have been studied by structural characterization, contact angle testing, weight and dimensional stabilities, electrolyte-absorbing rate, and electrochemical behavior. Results showed that the composite separator had a uniform surface morphology and highly gradient three-dimensional porous structure, which led to a low electrolyte contact angle of 35 degrees and an area electrical resistance of 0.08 Omega cm(2). Moreover, it showed a low weight reduction rate of 7.5% and an area shrinkage rate of 2.0% in 40 wt% KOH solution at 333 K for 120 h. Due to the electrolyte-philic macroporous layer, the composite separator exhibited a high electrolyte-absorbing rate, which was higher than 55 mm for 5 min. These characteristics endowed the composite separator with excellent electrochemical performance, including a short activation time and a long dry/wet storage life. It is demonstrated that the composite separator can be a good candidate for alkaline batteries, especially for self-activated zinc-silver oxide batteries.
部门归属	[xiao, wei ; zhao, lina ; gong, yaqun ; wang, hong ; liu, jianguo ; yan, chuanwei] chinese acad sci, inst met res, lab corros & protect, beijing 100864, peoples r china
资助者	National Science Foundation of China [21306213]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75073
专题	中国科学院金属研究所
通讯作者	wxiao@imr.ac.cn
推荐引用方式 GB/T 7714	Xiao, Wei,Zhao, Lina,Gong, Yaqun,et al. Preparation and properties of composite separators with asymmetric structures for alkaline batteries[J]. RSC ADVANCES,2015,5(67):54742-54748.
APA	Xiao, Wei.,Zhao, Lina.,Gong, Yaqun.,Wang, Hong.,Liu, Jianguo.,...&wxiao@imr.ac.cn.(2015).Preparation and properties of composite separators with asymmetric structures for alkaline batteries.RSC ADVANCES,5(67),54742-54748.
MLA	Xiao, Wei,et al."Preparation and properties of composite separators with asymmetric structures for alkaline batteries".RSC ADVANCES 5.67(2015):54742-54748.