A piperidinium-based ionic liquid electrolyte to enhance the electrochemical properties of LiFePO4 battery

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	A piperidinium-based ionic liquid electrolyte to enhance the electrochemical properties of LiFePO4 battery
	Dong, Tao; Zhang, Liang; Chen, Shimou; Lu, Xingmei; Zhang, Suojiang
刊名	IONICS
	2015-08-01
卷号	21 期号:8 页码:2109-2117
关键词	Ionic liquid Electrolyte Lithium-ion battery High rate and cyclic performance
ISSN号	0947-7047
英文摘要	A piperidinium-based ionic liquid, N-methylpiperidinium-N-acetate bis(trifluoromethylsulfonyl)imide ([MMEPip][TFSI]), was synthesized and used as an additive to the electrolyte of LiFePO4 battery. The electrochemical performance of the electrolytes based on different contents of [MMEPip][TFSI] has been investigated. It was found that the [MMEPip][TFSI] significantly improved the high-rate performance and cyclability of the LiFePO4 cells. In the optimized electrolyte with 3 wt% [MMEPip][TFSI], 70 % capacity can be retained with an increase in rate to 3.5 C, which was 8 % higher than that of electrolyte without [MMEPip][TFSI]. For the Li/LiFePO4 half-cells, after 100 cycles at 0.1 C, the discharge capacity retention was 78 % in the electrolyte without ionic liquid. However, in the electrolyte with 3 wt% [MMEPip][TFSI], it displayed a high capacity retention of 91 %. The good electrochemical performances indicated that the [MMEPip][TFSI] additive would positively enhance the electrochemical performance of LiFePO4 battery.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
研究领域[WOS]	Chemistry ; Electrochemistry ; Physics
关键词[WOS]	TRANSFERENCE NUMBERS ; LI/LIFEPO4 CELLS ; LITHIUM ; TEMPERATURE ; PERFORMANCE ; CARBONATE ; AMMONIUM ; IMIDAZOLIUM ; GRAPHITE ; CATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000358665100002
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19414]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Dong, Tao,Zhang, Liang,Chen, Shimou,et al. A piperidinium-based ionic liquid electrolyte to enhance the electrochemical properties of LiFePO4 battery[J]. IONICS,2015,21(8):2109-2117.
APA	Dong, Tao,Zhang, Liang,Chen, Shimou,Lu, Xingmei,&Zhang, Suojiang.(2015).A piperidinium-based ionic liquid electrolyte to enhance the electrochemical properties of LiFePO4 battery.IONICS,21(8),2109-2117.
MLA	Dong, Tao,et al."A piperidinium-based ionic liquid electrolyte to enhance the electrochemical properties of LiFePO4 battery".IONICS 21.8(2015):2109-2117.