Anticorrosive flexible pyrolytic polyimide graphite film as a cathode current collector in lithium bis(trifluoromethane sulfonyl)imide electrolyte

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	Anticorrosive flexible pyrolytic polyimide graphite film as a cathode current collector in lithium bis(trifluoromethane sulfonyl)imide electrolyte
	Han, PX ; Zhang, B ; Huang, CS ; Gu, L ; Li, H ; Cui, GL
刊名	ELECTROCHEMISTRY COMMUNICATIONS
	2014
卷号	44 页码:70
关键词	Polyimide graphite film Current collector Lithium bis(trifluoromethane sulfonyl) imide Lithium ion batteries
ISSN号	1388-2481
通讯作者	Cui, GL (reprint author), Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao Ind Energy Storage Res Inst, 189 Songling Rd, Qingdao 266101, Peoples R China.
中文摘要	Flexible pyrolytic polyimide graphite film (PGF) is explored as a cathode current collector in lithium ion batteries using lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) based electrolyte. It is demonstrated that no obvious anodic current is observed up to 4.5 V versus Li+/Li for PGF, while significant corrosion current is found from 3.6 V for aluminum, indicative of better electrochemical stability of PGF than that of aluminum in LiTFSI based electrolyte. LiMn2O4 on aluminum and PGF has been used as model electrode for testing. There is hardly any capacity retained after 10 cycles at room temperature for the LiMn2O4/aluminum electrode. With regard to the LiMn2O4/PGF electrode, the capacity retention ratio remained 89% after 1000 cycles. Moreover, at an elevated temperature of 55 degrees C, the capacity retention ratio kept at 81% after 300 cycles. Since LiTFSI-based electrolyte shows advantages in safety, stability and conductivity but could not be used due to Al-corrosion, the application of the PGF current collector could overcome this barrier. (C) 2014 Elsevier B.V. All rights reserved.
资助信息	Key Research Program of the Chinese Academy of Sciences [KGZD-EW-202-2]; National Natural Science Foundation of China [21271180]; National High Technology Research and Development Program of China (863 Program) [2013AA050905, 2014AA052303]; Key Technology Research Projects of Qingdao [12-4-1-24-gx, 13-4-1-10-gx]; Qingdao Key Lab of Solar Energy Utilization and Energy Storage Technology
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59057]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Han, PX,Zhang, B,Huang, CS,et al. Anticorrosive flexible pyrolytic polyimide graphite film as a cathode current collector in lithium bis(trifluoromethane sulfonyl)imide electrolyte[J]. ELECTROCHEMISTRY COMMUNICATIONS,2014,44:70.
APA	Han, PX,Zhang, B,Huang, CS,Gu, L,Li, H,&Cui, GL.(2014).Anticorrosive flexible pyrolytic polyimide graphite film as a cathode current collector in lithium bis(trifluoromethane sulfonyl)imide electrolyte.ELECTROCHEMISTRY COMMUNICATIONS,44,70.
MLA	Han, PX,et al."Anticorrosive flexible pyrolytic polyimide graphite film as a cathode current collector in lithium bis(trifluoromethane sulfonyl)imide electrolyte".ELECTROCHEMISTRY COMMUNICATIONS 44(2014):70.