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研究了Ml1-xMmx(Ni3.55Co0.75Mn0.4Al0.3)贮氢合金中Ml∶Mm比例对其活化性能的影响,以及使用不同粘结剂对合金的活化性能和放电容量的影响.结果表明:Ml∶Mm比例及不同的粘结剂对合金活化性能有显著影响.按充放电电流均为60mAh/g,充电时间为7.5h,放电终止电位为-0.60V(vs.Hg/HgO)的充放电制度活化时,Ml0.7Mm0.3(Ni3.55Co0.75Mn0.4Al0.3)对应的合金具有最好的活化性能和最高的放电容量.用PVA作粘结剂,该合金只需4个循环即可活化,最高放电容量为329.7mAh/g.与用PVA作粘结剂相比,以CMC为粘结剂时,各组分合金的活化性能明显变差(经过了10个循环周期,合金仍未完全活化).
The effect of Ml: Mm ratio on the activation properties of Ml1-xMmx (Ni3.55Co0.75Mn0.4Al0.3) hydrogen storage alloy and the effect of using different binders on the activation performance and discharge capacity of the alloy were investigated. : Ml: Mm ratio and different binders have a significant impact on the activation properties of the alloy according to the charging and discharging current are 60mAh / g, the charging time is 7.5h, the discharge end potential of -0.60V (vs.Hg / HgO) When the charge-discharge system is activated, the Ml0.7Mm0.3 (Ni3.55Co0.75Mn0.4Al0.3) alloy has the best activation performance and the highest discharge capacity.With PVA as the binder, the alloy only needs 4 Cycle can be activated, the maximum discharge capacity of 329.7mAh / g. And compared with PVA as a binder, CMC as a binder, the activation performance of the alloy components significantly worse (after 10 cycles, Alloy still not fully activated).