Analysis of the Galvanostatic Intermittent Titration Technique (GITT) as applied to a lithium-ion porous electrode

被引：255

作者：

Dees, Dennis W. ^{[1
]}

Kawauchi, Shigehiro ^{[2
]}

Abraham, Daniel P. ^{[1
]}

Prakash, Jai ^{[3
]}

机构：

[1] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

[2] Toyota Cent Res & Dev Labs Inc, Battery Div, Aichi 4801192, Japan

[3] IIT, Dept Chem & Biol Engn, Chicago, IL 60616 USA

来源：

JOURNAL OF POWER SOURCES | 2009年 / 189卷 / 01期

关键词：

Lithium-ion; Positive; GITT; Modeling; Battery; POSITIVE ELECTRODES; INSERTION CELL; IMPEDANCE; OPTIMIZATION; PERFORMANCE;

D O I：

10.1016/j.jpowsour.2008.09.045

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：

Galvanostatic Intermittent Titration Technique (GITT) experiments were conducted to determine the lithium diffusion coefficient of LiNi0.8Co0.15Al0.05O2, used as the active material in a lithium-ion battery Porous composite positive electrode. An electrochemical model, based on concentrated solution porous electrode theory, was developed to analyze the GITT experimental results and compare to the original GITT analytical theory. The GITT experimental studies on the oxide active material were conducted between 3.5 and 4.5 V vs. lithium, with the maximum lithium diffusion coefficient value being 10(-10) cm(2) s(-1) at 3.85 V. The lithium diffusion coefficient values obtained from this study agree favorably with the values obtained from an earlier electrochemical impedance spectroscopy study. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：263 / 268

页数：6

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