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本文提出了传输过程特征电流I~*的概念及其应用.多孔电极每一传输过程的各有关参数,在数学处理中自然地集合为一个具有电流因次的参数,称为特征电流I~*,其值反映该过程的传输性能.I~*值可由实验测定.它取代原有参数并减少参数数目,方便数学处理.在过电位超过3RT/nF条件下,取得了电极传输极化状态——反应物浓度分布,有效电位分布,局部电流密度分布,利用率因子以及极化曲线形状等的关系式与图.它们只取决于极化电流I对各I~*的比值,若逐步增加电极负荷,则各种传输过程的极化,按各I~*值从小到大的次序出现.
In this paper, the concept and application of the characteristic current I ~ * in the transmission process are proposed and the relevant parameters of each transmission process of the porous electrode are naturally collected in the mathematical process as a current-dependent parameter, which is called the characteristic current I * , Its value reflects the transmission performance of the process.I ~ * values can be determined experimentally.It replaced the original parameters and reduce the number of parameters for the convenience of mathematical treatment.Over over the potential of 3RT / nF conditions, made the electrode polarization state of transmission - - The relationship between reactant concentration distribution, effective potential distribution, local current density distribution, utilization factor and polarization curve shape, etc. They depend only on the ratio of the polarization current I to each I ~ *, if the electrode is gradually increased Load, the polarization of the various transmission process, according to the I ~ * value from small to large order.