Electrochemical impedance study of LiCoO2 cathode reactions in a lithium ion cell incorporating a reference electrode

被引：13

作者：

Mendoza-Hernandez, Omar Samuel ^{[1
]}

Ishikawa, Hiroaki ^{[1
,2
]}

Nishikawa, Yuuki ^{[1
]}

Maruyama, Yuki ^{[1
]}

Sone, Yoshitsugu ^{[3
,4
]}

Umeda, Minoru ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Mat Sci & Technol, Fac Engn, Nagaoka, Ibaraki 3113195, Japan

[2] Ind Technol Inst Ibaraki Prefecture, Nagaoka, Ibaraki 3113195, Japan

[3] Japan Aerosapce Explorat Agcy, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan

[4] Grad Univ Adv Studies, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2015年 / 19卷 / 04期

关键词：

Li-ion secondary cell; Electrochemical impedance spectroscopy; dQ/dE vs. E; LiCoO2; AC-IMPEDANCE; INTERCALATION; SPECTROSCOPY; LI4TI5O12; INSERTION;

D O I：

10.1007/s10008-015-2741-y

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Kinetic characteristics of LiCoO2 cathode materials are studied using a Li-ion secondary cell incorporating a reference electrode. By carrying out electrochemical impedance spectroscopy (EIS) measurements at different state of charges (SOCs) and temperatures and obtaining dQ/dE vs. E curves, the activation energy, pre-exponential factor, and reaction rate constant of Li-ion insertion/deinsertion reactions are analyzed as a function of cathode potential. The kinetic behavior of Li-ion conduction, Li-ion solvation/desolvation, and charge transfer reactions of LiCoO2 and its dependency on the structural changes of LiCoO2 are studied. The charge transfer, Li-ion conduction, and Li-ion solvation/desolvation reactions exhibited a dependency on the structural changes of the cathode material.

引用

页码：1203 / 1210

页数：8

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