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题名: A low cost shutdown sandwich-like composite membrane with superior thermo-stability for lithium-ion battery
作者: Li, Dan1, 2;  Shi, Dingqin1;  Yuan, Zhizhang1, 2;  Feng, Kai1;  Zhang, Huamin1, 3;  Li, Xianfeng1, 3
关键词: Lithium-ion battery ;  Sandwich-like membrane ;  Thermal stability ;  Shutdown function
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2017-11-15
DOI: 10.1016/j.memsci.2017.07.051
卷: 542, 页:1-7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: A separator plays the key role in solving the safety issues of lithium-ion batteries. The currently used polyolefin separators are seriously limited by their low thermal stability. In this paper, a sandwich-like composite membrane with super-high thermal stability was designed and fabricated. In the design, a porous polybenzimidazole (PBI) layer was introduced on both sides of a PE separator by a typical phase inversion method. The porous PBI layer on both sides of the PE ensured high ion conductivity, high thermal stability and the nonflammable property. Meanwhile, this PE separator also acted as a shut-down layer at an elevated temperature. As a result, the PBI/PE/PBI (referred to as PBIE) sandwich-like composite membrane exhibited no dimensional shrinkage up to 200 degrees C. In addition, the prepared PBIE membrane could easily shut the battery down at about 140 degrees C. Combing these features of shut-down function and high thermal stability, the PBIE membrane is expected to internally solve the safety issues, which have been extremely troublesome so far for lithium-ion batteries.
关键词[WOS]: ELECTROCHEMICAL PERFORMANCE ;  POLYPROPYLENE SEPARATORS ;  WETTABILITY ;  ELECTROLYTE
语种: 英语
WOS记录号: WOS:000410384300001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149858
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China

Recommended Citation:
Li, Dan,Shi, Dingqin,Yuan, Zhizhang,et al. A low cost shutdown sandwich-like composite membrane with superior thermo-stability for lithium-ion battery[J]. JOURNAL OF MEMBRANE SCIENCE,2017,542:1-7.
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