贮氢合金电极极化曲线模拟

The Simulation of the Polarization Curve for HSA

采用计算机技术模拟材料的性能是新兴的研究领域。线性极化曲线是判断镍氢电池负极贮氢电极合金电化学性能的重要手段。通过对贮氢合金电极极化曲线模拟不仅可以从理论上研究各种因素如扩散系数、交换电流对电极性能的影响,而且还可以对实验结果进行验证。在此基础上还可以进一步发展神经网络系统,处理实验数据,获得相应动力学信息。本文根据电化学基本原理,在假设其他参数不变的条件下,分别考察了温度、交换电流、扩散系数、能量传递系数对极化曲线的影响,并初步分析了电极反应与腐蚀反应共存时的贮氢合金极化曲线特征。

Simulating the behavior of materials by using computer technique is new field of researches. The liner polarization is an important technique for determination of the electrochemical properties of metal hydride electrodes used for Ni-MH battery. Simulating the liner polarization of metal hydride electrode, the effect of many factors on electrode properties, such as diffusion coefficient and exchange current, is studied theoretically, as well as the tested results was analyzed or proofed. Based on this, the neural net program can be developed to fit experimental data to obtain dynamic information' s.In this paper, based on the basic principles of electrode process kinetics, the effects of temperature, exchange current, diffusion coefficient and energy transfer coefficient on the liner polarization curves of metal hydride electrode were investigated, respectively. It was done to preliminarily analyze the characteristics of liner polarization curves for metal hydride electrode when the electrode reaction coexists with corrosion reaction.