The interfacial evolution between polycarbonate-based polymer electrolyte and Li-metal anode

doi:10.1016/j.jpowsour.2018.07.008

	The interfacial evolution between polycarbonate-based polymer electrolyte and Li-metal anode
	Wang, Chen 1,2; Zhang, Huanrui 1; Li, Jiedong 1; Chai, Jingchao 1,2; Dong, Shanmu 1; Cui, Guanglei 1
刊名	JOURNAL OF POWER SOURCES
	2018-09-01
卷号	397 页码:157-161
关键词	Interface Evolution Polymer electrolytes Li-metal anode
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2018.07.008
英文摘要	Solid polymer electrolyte is strongly considered to be one of the key materials to solve safety problem of high energy lithium batteries caused by flammable liquid organic carbonate solvent, while the development and application of solid polymer electrolytes are seriously restricted by the low ambient temperature ionic conductivity. Recently, aliphatic polycarbonate-based electrolytes have been reported to possess high ionic conductivity at ambient temperature. Herein we choose poly (propylene carbonate) as a model to investigate the origin of the high ionic conductivity of polycarbonate-based polymer electrolytes. Our results prove that poly (propylene carbonate) degrades to micromolecular segments when contacts with Li-metal anode. The depolymerization products can infiltrate the interface and swell the electrolyte to develop the amorphous state so as to reduce both interfacial and bulk resistance. As scaffold of the electrolyte, cellulose can limit this reaction at the interface by physical obstruction. The hydroxyl units can also quench the lithium alkoxide intermediate to suppress further degradation, guaranteeing the security of the system. This study provides a profound understanding of the composition, reaction and evolution of the interface between polymer electrolyte and Li-metal anode, which sheds new light on the interface construction of ambient-temperature solid-state lithium metal batteries.
资助项目	National Science Fund for Distinguished Young Scholars[51625204] ; National Natural Science Foundation of China[51703236] ; Youth Innovation Promotion Association of CAS[2016193] ; China Postdoctoral Science Foundation[2017M612366] ; Key research and development plan of Shandong Province P. R. China[2018GGX104016] ; Key Scientific and Technological Innovation Project of Shandong[2017CXZC0505]
WOS关键词	RECHARGEABLE BATTERIES ; PROPYLENE CARBONATE ; IONIC-CONDUCTIVITY ; POLY(ETHYLENE OXIDE) ; LITHIUM BATTERIES ; INTERPHASE LAYER ; FIBERS ; LIQUID ; SALTS
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000445317900020
资助机构	National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; China Postdoctoral Science Foundation ; Key research and development plan of Shandong Province P. R. China ; Key Scientific and Technological Innovation Project of Shandong
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/11646]
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Dong, Shanmu; Cui, Guanglei
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Technol Inst, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chen,Zhang, Huanrui,Li, Jiedong,et al. The interfacial evolution between polycarbonate-based polymer electrolyte and Li-metal anode[J]. JOURNAL OF POWER SOURCES,2018,397:157-161.
APA	Wang, Chen,Zhang, Huanrui,Li, Jiedong,Chai, Jingchao,Dong, Shanmu,&Cui, Guanglei.(2018).The interfacial evolution between polycarbonate-based polymer electrolyte and Li-metal anode.JOURNAL OF POWER SOURCES,397,157-161.
MLA	Wang, Chen,et al."The interfacial evolution between polycarbonate-based polymer electrolyte and Li-metal anode".JOURNAL OF POWER SOURCES 397(2018):157-161.