Electrochemical properties of M1Ni(3.5)Co(0.6)Mn(0.4)Al(0.5)-x wt% Mm(0.89)Mg(0.11)Ni(2.97)Mn(0.14)Al(0.20)Co(0.54) composites
Electrochemical properties of M1Ni(3.5)Co(0.6)Mn(0.4)Al(0.5)-x wt% Mm(0.89)Mg(0.11)Ni(2.97)Mn(0.14)Al(0.20)Co(0.54) composites
复制标题
电化学%20性能%20of%20M1Ni(3.5)Co(0.6)Mn(0.4)Al(0.5)-x%20wt%%20Mm(0.89)Mg(0.11)Ni(2.97)Mn(0.14)Al(0.20)Co(
DOI：
10.1007/s12598-014-0384-2
复制
发表时间：
2015
期刊：
影响因子：
8.8
通讯作者：
Qi Ting
中科院分区：
文献类型：
--
作者：
Huang Hong-Xia;Li Guo-Hui;Wang Xin-Ying;Li Yin;Teng Xing;Qi Ting
为了提高AB型贮氢合金的综合电化学性能，采用球磨法制备了新型复合合金M1 NiCoMnAl-x wt% Mm-Mg-NiMnAlCo（x= 0，5，10; M1为混合稀土）。X射线衍射（XRD）分析表明，复合合金为单一LaNi相。最大放电容量从M1 NiCoMnAl的315 mAh· g略微增加到324 mAh· g（x= 5）和325 mAh· g（x= 10）。AB型La-Mg-Ni基合金的加入对循环稳定性有积极的影响。添加MmMgNiMnAlCo合金后，合金电极的交换电流密度（I）、极限电流密度（I）和氢的扩散系数（D）均有所提高，高倍率放电性能相应改善。
In order to improve the overall electrochemical properties of AB-type storage alloys, the new type composite alloys M1NiCoMnAl-x wt% Mm-Mg-NiMnAlCo (x= 0, 5, 10; M1 means mischmetal) were prepared by means of ball milling. The composite alloys are shown to be single LaNi phase by X-ray diffraction (XRD) patterns. The maximum discharge capacity slightly increases from 315 mAh· g for M1NiCoMnAl to 324 mAh· g (x= 5) and 325 mAh· g (x= 10). The addition of AB-type La-Mg-Ni-based alloy has a positive effect on the cycle stability. With the addition of MmMgNiMnAlCo alloy, the exchange current density (I), the limiting current density (I), and the diffusion coefficient of hydrogen (D) of the alloy electrodes increase, leading to a corresponding improvement of the high rate dischargeability.