Electrochemical Kinetic Study of LiFePO4 Using Cavity Microelectrode

被引：123

作者：

Come, J. ^{[1
]}

Taberna, P. -L. ^{[1
]}

Hamelet, S. ^{[2
]}

Masquelier, C. ^{[2
]}

Simon, P. ^{[1
]}

机构：

[1] Univ Toulouse 3, CIRIMAT UMR CNRS 5085, F-31062 Toulouse 4, France

[2] Univ Picardie Jules Verne, LRCS, UMR CNRS 6007, F-80000 Amiens, France

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2011年 / 158卷 / 10期

关键词：

LI-INSERTION/EXTRACTION; ELECTRODE MATERIALS; LITHIUM DIFFUSION; PHASE-TRANSITION; NANOPARTICLES; BATTERIES; LIXFEPO4; FEPO4;

D O I：

10.1149/1.3619791

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Lithium cation insertion and extraction in LiFePO4 were electrochemically studied with a cavity microelectrode (CME). Cyclic voltammetry measurements were used to characterize the kinetics of the material. LiFePO4 was successfully cycled from 0.1 mV s(-1) up to 1 V s(-1) and is therefore a suitable material to be used in high power applications, such as asymmetric hybrid supercapacitors. Several kinetic behaviors were observed depending on the sweep rate. The LiFePO4 was found to follow different kinetics behaviors depending of the sweep rate. The charge storage mechanisms were investigated for Li+ extraction/insertion. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3619791] All rights reserved.

引用

页码：A1090 / A1093

页数：4

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