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对于活化极化控制的电极反应,电极动力学的核心问题是如何从极化测量求得三个基本的动力学参数:交换电流密度i~0(或腐蚀体系的腐蚀电流密度i_K)及阴、阳极Tafel系数β_eβ_s。为了便于解析和处理,实验结果常选择线性极化区进行测量,分别利用电位增量△E与电流密度i或logi的近似直线关系确定有关参数的值。这当然很方便,但也正由于过程因素的简化,无法同时
For the activation-polarization-controlled electrode reaction, the core problem of electrode kinetics is how to derive three basic kinetic parameters from the polarization measurement: the exchange current density i ~ 0 (or the corrosion current density of the corrosion system i_K) Anode Tafel coefficient β_eβ_s. In order to facilitate the analysis and processing, the experimental results are often selected linear polarization zone measurement, respectively, using the potential increase △ E and current density i or logi approximate linear relationship to determine the value of the parameters. This is of course very convenient, but it is also due to the simplification of process factors that can not be simultaneous