Electrochemical behavior of graphite anode at elevated temperatures in organic carbonate solutions

被引：42

作者：

Levi, MD ^{[1
]}

Wang, C ^{[1
]}

Gnanaraj, JS ^{[1
]}

Aurbach, D ^{[1
]}

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

来源：

JOURNAL OF POWER SOURCES | 2003年 / 119卷

关键词：

lithium rechargeable batteries; lithiated graphite electrodes; the chemical diffusion coefficient of Li-ion; elevated temperatures; staging phase diagram;

D O I：

10.1016/S0378-7753(03)00279-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A combination of three major electroartalytical techniques (slow-scan rate cyclic voltammetry (SSCV), potentiostatic intermittent titration (PITT) and electrochemical impedance spectroscopy (EIS)) was applied for comprehensive analysis of temperature dependence of the most important equilibrium and kinetic parameters related to the Li-insertion process. These parameters include the differential intercalation capacity, C-int and the chemical diffusion coefficient, D-chem. We have analyzed the complicated, ambivalent influence of the temperature on the shape of the cyclic voltammety curves, probing the rate of separate steps of the intercalation process close to equilibrium. Good agreement had been found between the SSCV data measured over a wide range of temperatures, and the classical staging phase diagram of LixC6 (this diagram is presented as a plot of the absolute temperature, T versus intercalation level, x). (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：538 / 542

页数：5

共 17 条

[1] PHASE-DIAGRAM OF LIXC6 [J].