Electrochemical Performance of Fe3O4 Anodes Surface-Modified by Li2O-2B2O3 for Iron-Nickel Batteries

被引：0
作者：
Ding Zhaonan [1 ]
Zhu Ding [1 ]
Chen Yungui [1 ]
Duan Xiaobo [1 ]
机构：
[1] Sichuan Univ, Chengdu 610064, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2014年 / 43卷 / 10期
关键词：
iron-nickel battery; surface modification; Li2O-2B(2)O(3); hydrogen evolution overpotential; self-discharge; METAL-SULFIDE ADDITIVES; ALKALINE; ELECTRODES; DISCHARGE;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To solve the problem of low charging efficiency and high self-discharge of Fe-Ni batteries, the structure and electrochemical performance of Fe3O4 anodes surface-modified by 0 similar to 1wt% Li2O-2B(2)O(3) (LBO) were studied. The results show that the appropriate amount of LBO (0.1 wt%) can be deposited on the surface of electrode uniformly, and there is no obvious chemical reaction between LBO and Fe3O4. The Fe3O4 electrode modified by 0.1wt% LBO has an electrochemical capacity up to 315.2 mAh/g, 54.1 mAh/g higher than Fe3O4 electrode without LBO, and its charging efficiency, cycle performance and self-discharge are improved. This improvement is directly related to the reduction of charge transfer impedance, as well as the increase of hydrogen evolution overpotential and corrosion resistance.
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页码：2440 / 2444
页数：5
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