【摘要】 针对混合稀土金属中含有不定量的Ｆｅ杂质及贮氢电极合金在熔炼过程中容易混入Ｆｅ杂质的特点，采用在Ｍｌ（ＮｉＣｏＭｎＴｉ）５合金中人为地添加不同量Ｆｅ的方法，系统地研究了Ｆｅ掺杂量对贮氢电极合金Ｍｌ（ＮｉＣｏＭｎＴｉ）５电化学性能的影响。结果表明：微量Ｆｅ（ｘ≤０．０５）掺杂时合金的放电容量有所提高，但随着Ｆｅ掺杂量的进一步增多，合金的放电容量逐渐下降；增加Ｆｅ掺杂量可以改善合金的活化性能；掺杂Ｆｅ的存在不同程度地提高了充放电循环稳定性，但也不同程度地降低了合金的高倍率放电性能。更多还原

【Abstract】 Effects of Fe doping on the electrochemical properties of Ml(NiCoMnTi)5 hydrogen storage alloy have been investigated by adding various amounts of iron to Ml(NiCoMnTi)5 alloy. It is found that the discharge capacities of Ml(NiCoMnTi)5 Fex alloys increase with minor amounts of iron(x≤005) doping, but they decrease while the doped iron content(atomic ratio) increases from 005 to 050. The electrochemical activation and cycling stability of the alloy are improved with increasing the doped iron content, but the highratedischargeability decreases at the same time.更多还原