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丁二腈作为电解液添加剂的研究
引用本文:张春丽,叶学海,任春燕.丁二腈作为电解液添加剂的研究[J].无机盐工业,2015,47(4):65-67.
作者姓名:张春丽  叶学海  任春燕
作者单位:中海油天津化工研究设计院,天津 300131
摘    要:在1 mol/L 六氟磷酸锂/[碳酸乙烯酯(EC)+碳酸二甲酯(DMC)+碳酸甲乙酯(EMC)(体积比为1∶1∶1)]的电解液中加入添加剂丁二腈(SN),用循环伏安(CV)、恒流充放电、电化学阻抗谱(EIS)等方法,研究了丁二腈对电解液的电化学窗口、电池的比容量、电池的首次充放电效率和电池的循环性能的影响。结果表明,在电解液中加入一定量的高纯度丁二腈,能提高电池的比容量、首次充放电效率和拓宽电解液的电化学稳定窗口,从而提高电解液的热稳定性,改善电解液的循环性能。

关 键 词:丁二腈  电解液  添加剂  锂离子电池  

Study on succinonitrile as additive of electrolyte solution
Zhang Chunli;Ye Xuehai;Ren Chunyan.Study on succinonitrile as additive of electrolyte solution[J].Inorganic Chemicals Industry,2015,47(4):65-67.
Authors:Zhang Chunli;Ye Xuehai;Ren Chunyan
Affiliation:CNOOC Tianjin Chemical Research & Design Institute,Tianjin 300131,China
Abstract:Succinonitrile(SN) was added to the electrolyte solution containing 1 mol/L LiPF6 in ethylene carbonate (EC), dimethyl carbonate(DMC),and methyl ethyl carbonate(EMC) (volume ratio of 1∶1∶1).The effects of SN on electrochemical windows,specific capacity,charge-discharge efficiency for the first cycle,and cycling performance of lithium ion battery were researched by cyclic voltammetry(CV),charge-discharge cycle performance,and electrochemical impedance spectra(EIS).The results indicated that the application of high purity SN improved the specific capacity,initial charge-discharge efficiency,electrochemical windows,thermal stability,and cycling performance of the electrolyte solution.
Keywords:succinonitrile  electrolyte  additive  Li-ion battery  
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