A mathematical model for the cycle life of hydride electrodes

A mathematical model for the cycle life of hydride electrodes
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氢化物电极循环寿命的数学模型

DOI:
10.1016/0925-8388(95)01737-2
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发表时间:
1995-12
期刊:
J. Alloys Compds.
影响因子:
--
通讯作者:
Q.D.Wang
Q.D.Wang
中科院分区:
其他
文献类型:
--
作者:
152.Y.Q. Lei;C.S. Wang;X.G. Yang;H.G. Pan;J. Wu;Q.D.Wang

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本文从氢化物材料的活化和降解过程出发,推导了氢化物电极循环电化学容量的数学模型。在电化学极化方程中引入活化和降解因子,建立了一个包含浓差极化、相变极化和电化学极化的循环寿命模型。在TiNi氢化物电极上的实验数据与推导的模型吻合得很好。根据该模型,找出了影响循环寿命的各种因素,并提出了提高循环寿命的方法。
In this paper, a mathematical model for the cycling electrochemical capacity of hydride electrodes was deduced on the basis of activation and degradation of hydride materials. A cycle life model was deduced on introducing the activation and degradation factors into the electrochemical polarization equation which included concentration polarization, phase transformation polarization and electrochemical polarization. Experimental data on the TiNi hydride electrode were in good agreement with the deduced model. From this model, various factors affecting the cycle life were identified and the methods to enhance the cycle life were suggested.
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