Enhanced High-Temperature Performances of LiFePO4 Cathode with Polyacrylic Acid as Binder

被引：30

作者：

Zhang, Zhian ^{[1
]}

Zeng, Tao ^{[1
]}

Lu, Hai ^{[2
]}

Jia, Ming ^{[2
]}

Li, Jie ^{[1
,2
]}

Lai, Yanqing ^{[1
,2
]}

机构：

[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] Cent South Univ Shenzhen, Res Inst, Engn Res Ctr High Performance Battery Mat & Devic, Shenzhen 518057, Peoples R China

来源：

ECS ELECTROCHEMISTRY LETTERS | 2012年 / 1卷 / 05期

关键词：

LI-ION BATTERIES; CYCLE PERFORMANCE; GRAPHITE ANODE; CARBONATE; CELLS;

D O I：

10.1149/2.001206eel

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical performance of LiFePO4 at elevated temperature (55 degrees C) is enhanced by using polyacrylic acid (PAA) as a binder. Results show that at 55 degrees C, it can deliver 100 cycles with 97.7% capacity retention and unchanged discharge plateau potential at the current density of 70 mA g(-1) (0.5 C), which is much better than the cathode with polyvinylidene fluoride. Scanning electron microscopy studies clearly demonstrate that glue-like PAA coating on the electrodes form a protective film, which may protect the LiFePO4 matrix from the corrosive solution or suppress the dissolution of Fe. (C) 2012 The Electrochemical Society. All rights reserved.

引用

页码：A74 / A76

页数：3

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