多孔电极极化及其分布的数值计算——Ⅰ 固、液相电阻的影响

多孔电极极化及其分布的数值计算——Ⅰ 固、液相电阻的影响 NUMERICAL SOLUTIONS OF POLARIZATIONS OF POROUS ELECTRODES AND ITS DISTRIBUTIONS I Effects of Ohmic Resistances 杨汉西 Yang Hanshi Lu Juntao Zha Quanxing first-author 陆君涛 查全性 <正> 一前言关于防水型气体扩散电极的模型及极化理论,我们曾在[1]中综合评述。该文中介绍和推导的不考虑气相传质过程影响时的极化曲线公式在许多情况下亦能适用于一股多孔电极。推导多孔电极内极化分布和极化曲线公式时均涉及在选定的边界条件下求解二阶非线性微分方程,在不少情况下很难或者不可能得到解析解。因此,采用数值计算方法更为简便。本文主要推导电阻对多孔电极的极化和极化分布的影响的微值计算方法及通用结论。所采用的计算工具为配有二级BASIC语言的微型计算机（RADIO SHACK TRS—80型）。在[2]中曾按单个园住孔模型用数值计算方法处理液相电阻及气相浓度极化对极化分布 A BASIC programm was designed to perform the numerical calculations of polarization of electrodes and it’s distribution along the depth of electrode caused by the eombined action of electrochemical kinecties and the liquid phase—solid phase ohmic resistances. The effects of electrochemical rate constant and specific resistance on numerical solutions of polarization distribution and polarization curves were investigated. 1981-01-01 2021-04-01 1