气体扩散电极理论电流密度的研究

Research on the theoretical current density of gas diffusion electrode

为了探究气体扩散电极的放电过程,基于三相交界线概念和带状电极放电实验数据,提出了一种理想电极模型,并推算出该理想模型的理论电流密度约为4 500mA/cm2。对目前技术水平实验输出电流密度和理论电流密度之间的差异进行了讨论,定性分析了缺相等主要影响因素。

In order to explore the discharge process of gas diffusion electrode, an ideal model of the electrode is put forward,based on the concept of three-phase boundary and the data of strip electrode discharge experiment, and it is calculated that the theoretical current density of the ideal model is about 4 500 mA/cm^2. With the current technology, it is discussed the differences between the output current density with the theoretical current density, and the main influence factors such as lack-phase are qualitatively analyzed.