Influence of Four Factors on Discharge Capacity and Self-Discharge Rate of Iron Electrode

材料科学技术（英文）, 2003, 19(6): 515-517.

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1.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

2.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

3.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

4.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

5.Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

基金项目: National Natural Science Foundation of China(50002005) Natural Science Foundation of Tianjin(013606811)

Influence of Four Factors on Discharge Capacity and Self-Discharge Rate of Iron Electrode

Keywords： Iron electrode

Ni-Fe rechargeable batteries possess the advantages of long cycle life, high theoretical specific energy, abundant raw material,Iow price and environmental friendship. It has a wide applied perspective. The advantages, disadvantages and preparation methods of iron electrodes were summarized. The influence of four factors on discharge capacity and self-discharge rate of iron electrode were discussed by means of orthogonal experiments, galvanostatic charges and discharges. The influences of graphite on the discharge capacity and self-discharge rate of iron electrode were the most remarkable, the most unapparent influences on the discharge capacity and self-discharge rate were HPMC (hydroxy propoxy methoxy cellulose) and sodium sulphide, respectively. The aim of the present research was to study the effects of graphite, HPMC and iron powder added in the electrodes, sodium sulphide added in the electrolytes on the discharge capacity and self-discharge rate of iron electrodes.The largest discharge capacity of the iron electrodes was 488.5 mAh/g-Fe at 66.4 mA/g-Fe in the first ten cycles, and the average self-discharge rate was 0.367% per hour.

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材料期刊网

Influence of Four Factors on Discharge Capacity and Self-Discharge Rate of Iron Electrode

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