The Cycling Behavior and Capacity Deterioration Model of Hydride Electrodes in Charging-Discharging Cycling*
The Cycling Behavior and Capacity Deterioration Model of Hydride Electrodes in Charging-Discharging Cycling*
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DOI：
10.1524/zpch.1994.183.part_1_2.287
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Z. Li;Y. Lei;B. Liu;Jing Wu;Qi Dong Wang
中科院分区：
文献类型：
--
作者：
Z. Li;Y. Lei;B. Liu;Jing Wu;Qi Dong Wang
众所周知，MH/Ni电池的寿命主要取决于其电极材料的防腐性能。然而，尽管已经发表了许多实验结果，但关于氢化物电极在电化学体系中容量退化的理论研究还很少。Willems[1]、Wakao和Yonemura[2]、Boonstra和Bernards[3]认为氢化物中吸氢金属元素的氧化是氢化物电极容量下降的主要原因。根据LaNi5和LaNi4Cu的劣化试验结果，Willems得到了氢化物电极的电化学容量C与循环次数N的关系[1]：
It is well-known that the life of a Ni/MH battery is mainly determined by the anti-corrosion properties of its electrode materials. However, theoretical investigations on the capacity degradation of hydride electrodes in electrochemical systems are scarcely seen although many experimental results have been published. Willems [1], Wakao and Yonemura [2], Boonstra and Bernards [3] considered the oxidation of the hydrogen absorbing metallic element in the hydride as the main cause for the capacity degradation of the hydride electrodes. The following relation between electrochemical capacity of hydride electrodes C and cycling number N was obtained by Willems from the results of deterioration tests of LaNi5 and LaNi4Cu [1]: