Determination of the lithium ion diffusion coefficient in graphite

被引：347

作者：

Yu, P ^{[1
]}

Popov, BN ^{[1
]}

Ritter, JA ^{[1
]}

White, RE ^{[1
]}

机构：

[1] Univ S Carolina, Ctr Electrochem Engn, Dept Chem Engn, Columbia, SC 29208 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1999年 / 146卷 / 01期

关键词：

D O I：

10.1149/1.1391556

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A complex impedance model for spherical particles was used to determine the lithium ion diffusion coefficient in graphite as a function of the state of charge (SOC) and temperature. The values obtained range from of 1.12 x 10(-10) to 6.51 X 10(-11) cm(2)/s at 25 degrees C for 0 and 30% SOC, respectively, and for 0% SOC, the value at 55 degrees C was 1.35 x 10(-10) cm(2)/s. The conventional potentiostatic intermittent titration technique (PITT) and Warburg impedance approaches were also evaluated, and the advantages and disadvantages of these techniques were exposed. (C) 1999 The Electrochemical Society S0013-4651(98)02-032-1. All rights reserved.

引用

页码：8 / 14

页数：7

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