Improving the Rate Capability of LiFePO4 Electrode by Controlling Particle Size Distribution

被引：15
|
作者：
Zhang, Yin [1 ,2 ,3 ,4 ]
Alarco, Jose A. [1 ,2 ]
Nerkar, Jawahar Y. [1 ,2 ]
Best, Adam S. [3 ]
Snook, Graeme A. [5 ]
Talbot, Peter C. [1 ,2 ]
机构：
[1] Queensland Univ Technol, Inst Future Environm & Sci, Brisbane, Qld 4001, Australia
[2] Queensland Univ Technol, Fac Engn, Brisbane, Qld 4001, Australia
[3] CSIRO Mfg, Clayton, Vic 3169, Australia
[4] CRRC Qingdao Sifang Rolling Stock Res Inst Co Ltd, Qingdao 266031, Shandong, Peoples R China
[5] CSIRO Mineral Resources, Clayton, Vic 3169, Australia
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2019年 / 166卷 / 16期
关键词：
LITHIUM MISCIBILITY GAP; X-RAY-DIFFRACTION; ELECTROCHEMICAL PROPERTIES; CATHODE MATERIALS; ANTISITE DEFECTS; PHASE-TRANSITION; OLIVINE LIFEPO4; CONDUCTIVITY; SPECTROSCOPY; DEPENDENCE;
D O I：
10.1149/2.0621916jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this study, the rate performance of a LiFePO4 (LFP) electrode has been enhanced by optimization of the particle size distribution of the LFP particles. Two LFP samples with different particle sizes (similar to 50 and similar to 350 nm) are mixed with various ratios and the electrochemical performance has been evaluated. Reduction of the contact resistance and increase of the Li diffusion coefficient have been achieved. The electrode with a mixing ratio of 50:50 shows an improved initial capacity at C/10 and superior rate capability compared with the two pristine materials. (C) 2019 The Electrochemical Society.
引用
收藏
页码：A4128 / A4135
页数：8
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