锌空气电池性能影响因素分析

文章根据锌空气电池的工作原理，应用电池电压与电流密度之间的半经验公式，结合电极的反应机理，建立了相应的数学模型，并计算了一定参数条件下的电池性能。计算分析表明，在大电流密度下，扩散层厚度和孔隙率对电池性能的影响最为显著，扩散层厚度增加会降低电池的性能，孔隙率增大，有利于气体的扩散；在较小电流密度下温度升高可以提高电池性能；增加环境的总压力，提高氧气的摩尔分数，增大氧气的分压力，也可以提高电池性能。

Analysis of Influence Factors on Performance for Zinc-Air Battery

Based on the zinc-air battery working principle, applicating the semi-empirical formula between voltage and current density , a mathematical model is established according to the electrode reaction mechanism. The battery performance at different working condition is calculated. Analysis shows that the thickness of cathode proliferation and porosity of the porous electrodes exert an important impact on the battery performance at the high current density, the thicker the proliferation, the lower the battery performance. The gas spread can be accelerated by expanding the porosity. Temperature rise will affect the performance of the battery under small current density. The battery performance can also be improved by increasing the total pressure of the environment, raising the mole fraction of oxygen and the partial pressure of oxygen.