微型包覆处理M1（NiCoMnTi）_5合金的电极活化特性

Activation Characteristics of the Microencapsulated M1(NiCoMnTi)_5 Alloy Electrode

将Ｍ１（ＮｉＣｏＭｎＴｉ）_５合金粉末经表面微型包覆Ｎｉ－Ｐ处理后制备成吸氢电极，研究其活化性能。结果表明，表面包覆Ｎｉ－Ｐ合金的贮氢电极，其放电容量提高，但达到最大循环放电容量的放电次数增加。试验还表明，采用小电流充放电易使贮氢合金电极达到活化状态。

he activation characteristics of the hydride negative electrode made of M1(NiCoMnTi)5 alloy powder microencapsulated by electroless Ni-P plating has been investigated. The results show that the microencapsulation of the hydrogen storage alloy powder by Ni-P plating increases the discharge capacity of the fabricated electrode, and that the charge- discharge cycling numbers increases in terms o f reaching to the maximum dischargecapacity of the electrode. Furthermore, it is found that a smaller cycling current makes the activation of the hydride negative electrode moreeasy.