Ohmic Drop in LiFePO4 Based Lithium Battery Cathodes Containing Agglomerates

被引：20

作者：

Cornut, R. ^{[1
]}

Lepage, D. ^{[1
]}

Schougaard, S. B. ^{[1
]}

机构：

[1] Univ Quebec Montreal, Dept Chem, Montreal, PQ H3C 3P8, Canada

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2012年 / 159卷 / 06期

关键词：

ELECTRODE; CARBON; OPTIMIZATION; DISCHARGE; MODEL;

D O I：

10.1149/2.081206jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In the present study, the importance of thorough active material and carbon mixing for the performance of LiFePO4 based electrodes was investigated experimentally and theoretically. A simple transformation of experimental data was introduced to identify the portion of the discharge curves that corresponds to an ohmic response. This section of the experimental data was subsequently modeled using a local Ohm's law to describe the transport in different media, including agglomerates. From the fitted data, it was shown that the mixing procedure has a profound effect on agglomerate size and size polydispersity. Further, an analytical approximation of the discharge curves integrating the agglomerates transport parameter and size distribution broadness was proposed in order to facilitate future comparison between experiments and model. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.081206jes] All rights reserved.

引用

收藏

页码：A822 / A827

页数：6

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