Investigation of the synergetic effects of LiBF4 and LiODFB as wide-temperature electrolyte salts in lithium-ion batteries

doi:10.1007/s11581-018-2470-1

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖资源与化学实验室

	Investigation of the synergetic effects of LiBF4 and LiODFB as wide-temperature electrolyte salts in lithium-ion batteries
	Zhang, Lijuan; Sun, Yanxia; Zhou, Yuan; Hai, Chunxi; Hu, Shuqing; Zeng, Jinbo; Shen, Yue; Dong, Shengde; Qi, Guicai; Li, Faqiang
刊名	IONICS
	2018-10
卷号	24 期号:10 页码:2995-3004
ISSN号	0947-7047
DOI	10.1007/s11581-018-2470-1
英文摘要	Herein, we present the use of lithium tetrafluoroborate (LiBF4) as an electrolyte salt for wide-temperature electrolytes in lithium-ion batteries. The research focused on the application of blend salts to exhibit their synergistic effect especially in a wide temperature range. In the study, LiCoO2 was employed as the cathode material; LiBF4 and lithium difluoro(oxalate)borate (LiODFB) were added to an electrolyte consisting of ethylene carbonate (EC), propylene carbonate (PC), and ethyl methyl carbonate (EMC). The electrochemical performance of the resulting electrolyte was evaluated through various analytical techniques. Analysis of the electrical conductivity showed the relationship among solution conductivity, the electrolyte composition, and temperature. Cyclic voltammetry (CV), charge-discharge cycling, and AC impedance measurements were used to investigate the capacity and cycling stability of the LiCoO2 cathode in different electrolyte systems and at different temperatures. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were applied to analyze the surface properties of the LiCoO2 cathode after cycling. The results indicated that the addition of a small amount of LiODFB into the LiBF4-based electrolyte system (LiBF4/LiODFB of 8:2) may enhance the electrochemical performance of the LiCoO2 cell over a relatively wide temperature range and improve the cyclability of the LiCoO2 cell at 60 A degrees C.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34489]
专题	青海盐湖研究所_盐湖资源与化学实验室
推荐引用方式 GB/T 7714	Zhang, Lijuan,Sun, Yanxia,Zhou, Yuan,et al. Investigation of the synergetic effects of LiBF4 and LiODFB as wide-temperature electrolyte salts in lithium-ion batteries[J]. IONICS,2018,24(10):2995-3004.
APA	Zhang, Lijuan.,Sun, Yanxia.,Zhou, Yuan.,Hai, Chunxi.,Hu, Shuqing.,...&Li, Faqiang.(2018).Investigation of the synergetic effects of LiBF4 and LiODFB as wide-temperature electrolyte salts in lithium-ion batteries.IONICS,24(10),2995-3004.
MLA	Zhang, Lijuan,et al."Investigation of the synergetic effects of LiBF4 and LiODFB as wide-temperature electrolyte salts in lithium-ion batteries".IONICS 24.10(2018):2995-3004.