电解液对LiCr_(0.1)Mn_(1.9)O_4电化学性能的影响  

Effects of Electrolyte Solutions on the Electrochemical Properties of LiCr_ (0.1) Mn_(1.9) O_4 Cathode

作　　者：李建刚[1] 唐致远[1] 薛建军[1] 王占良[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《应用化学》2002年第7期699-701,共3页Chinese Journal of Applied Chemistry

基　　金：天津市自然科学基金资助项目 (990 3 46)

摘　　要：The electrochemical properties of LiCr 0.1 Mn 1.9 O 4 as a cathode material in five electrolyte solutions , LiPF 6/EC+DEC, LiPF 6/EC+EMC, LiPF 6/EC+DME, LiPF 6/EC+DMC and LiBF 4/ EC+ DMC have been studied. The initial capacity values were very close each to other for the electrolyte solutions examined. However, the capacity fading and self discharge data obtained from the cells with above electrolyte solutions were different in the order of LiPF 6/EC+DME>LiPF 6/EC+EMCLiPF 6/EC+DMC≈LiPF 6/EC+DEC≈LiBF 4/EC+DMC. Decrease of the electrochemical properties was attributed mainly to the electrolyte decompositions on the surface of the electrodes. LiPF 6/EC+DEC, LiPF 6/EC+DMC and LiBF 4/EC+DMC appeared electrolytes well compatible with LiCr 0.1 Mn 1.9 O 4 electrode.The electrochemical properties of LiCr 0.1 Mn 1.9 O 4 as a cathode material in five electrolyte solutions , LiPF 6/EC+DEC, LiPF 6/EC+EMC, LiPF 6/EC+DME, LiPF 6/EC+DMC and LiBF 4/ EC+ DMC have been studied. The initial capacity values were very close each to other for the electrolyte solutions examined. However, the capacity fading and self discharge data obtained from the cells with above electrolyte solutions were different in the order of LiPF 6/EC+DME>LiPF 6/EC+EMCLiPF 6/EC+DMC≈LiPF 6/EC+DEC≈LiBF 4/EC+DMC. Decrease of the electrochemical properties was attributed mainly to the electrolyte decompositions on the surface of the electrodes. LiPF 6/EC+DEC, LiPF 6/EC+DMC and LiBF 4/EC+DMC appeared electrolytes well compatible with LiCr 0.1 Mn 1.9 O 4 electrode.

关 键 词：电化学性能 LiCr0.1Mn1.9O4 电解液 容量 循环特性 自放电 锂离子电池 阴极材料 锰酸锂 

分 类 号：TM912[电气工程—电力电子与电力传动] O646.5[理学—物理化学]