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Dinitrile compound containing ethylene oxide moiety with enhanced solubility of lithium salts as electrolyte solvent for high-voltage lithium-ion batteries
Xie, Bo1,2; Mai, Yongjin1; Wang, Jinglun1; Luo, Hao1; Yan, Xiaodan1; Zhang, Lingzhi1
2015-04-01
发表期刊IONICS
卷号21期号:4页码:909-915
摘要A dinitrile compound containing ethylene oxide moiety (4,7-dioxa-1,10-decanedinitrile, NEON) is synthesized as an electrolyte solvent for high-voltage lithium-ion batteries. The introduction of ethylene oxide moiety into the conventional aprotic aliphatic dinitrile compounds improves the solubility of lithium hexafluorophosphate (LiPF6) used commercially in the lithium-ion battery industry. The electrochemical performances of the NEON-based electrolyte (0.8 M LiPF6 + 0.2 M lithium oxalyldifluoroborate in NEON:EC:DEC, v:v:v = 1:1:1) are evaluated in graphite/Li, LiCoO2/Li, and LiCoO2/graphite cells. Half-cell tests show that the electrolyte exhibits significantly improved compatibility with graphite by the addition of vinylene carbonate and lithium oxalyldifluoroborate and excellent cycling stability with a capacity retention of 97 % after 50 cycles at a cutoff voltage of 4.4 V in LiCoO2/Li cell. A comparative experiment in LiCoO2/graphite full cells shows that the electrolyte (NEON:EC:DEC, v:v:v = 1:1:1) exhibits improved cycling stability at 4.4 V compared with the electrolyte without NEON (EC:DEC, v:v = 1:1), demonstrating that NEON has a great potential as an electrolyte solvent for the high-voltage application in lithium-ion batteries.
文章类型Article
关键词Lithium-ion Battery Dinitrile Lithium Hexafluorophosphate High-voltage Electrolyte
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s11581-014-1272-3
研究领域[WOS]Chemistry ; Electrochemistry ; Physics
关键词[WOS]CATHODE MATERIALS ; RECENT PROGRESS
收录类别SCI
语种英语
WOS类目Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS记录号WOS:000351508800002
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/9098
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Xie, Bo,Mai, Yongjin,Wang, Jinglun,et al. Dinitrile compound containing ethylene oxide moiety with enhanced solubility of lithium salts as electrolyte solvent for high-voltage lithium-ion batteries[J]. IONICS,2015,21(4):909-915.
APA Xie, Bo,Mai, Yongjin,Wang, Jinglun,Luo, Hao,Yan, Xiaodan,&Zhang, Lingzhi.(2015).Dinitrile compound containing ethylene oxide moiety with enhanced solubility of lithium salts as electrolyte solvent for high-voltage lithium-ion batteries.IONICS,21(4),909-915.
MLA Xie, Bo,et al."Dinitrile compound containing ethylene oxide moiety with enhanced solubility of lithium salts as electrolyte solvent for high-voltage lithium-ion batteries".IONICS 21.4(2015):909-915.
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