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首页> 外文期刊>Journal of Heat Transfer >A Photoelectrochemical Model of Proton Exchange Water Electrolysis for Hydrogen Production
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A Photoelectrochemical Model of Proton Exchange Water Electrolysis for Hydrogen Production

机译：质子交换水电解制氢的光电化学模型

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摘要

A photoelectrochemical model for hydrogen production from water electrolysis using proton exchange membrane is proposed based on Butler-Volmer kinetics for electrodes and transport resistance in the polymer electrolyte. An equivalent electrical circuit analogy is proposed for the sequential kinetic and transport resistances. The model provides a relation between the applied terminal voltage of electrolysis cell and the current density in terms of Nernst potential, exchange current densities, and conductivity of polymer electrolyte. Effects of temperature on the voltage, power supply, and hydrogen production are examined with the developed model. Increasing temperature will reduce the required power supply and increase the hydrogen production. An increase of about 11% is achieved by varying the temperature from 30℃ to 80℃. The required power supply decreases as the illumination intensity becomes greater. The power supply due to the cathode overpotential does not change too much with the illumination intensity. Effects of the illumination intensity can be observed as the current density is relatively small for the examined illumination intensities.
机译：基于电极的Butler-Volmer动力学和聚合物电解质中的传输阻力，提出了一种利用质子交换膜电解水制氢的光电化学模型。提出了等效的电路类比，用于顺序的动力学和传输电阻。该模型根据能斯特电势，交换电流密度和聚合物电解质的电导率提供了电解池施加的端电压与电流密度之间的关系。使用开发的模型检查了温度对电压，电源和制氢的影响。温度升高将减少所需的电源并增加制氢量。通过将温度从30℃更改为80℃，可以提高约11％。随着照明强度变大，所需的电源减少。由于阴极过电位而导致的电源不会随照明强度变化太大。可以观察到照明强度的影响，因为对于检查的照明强度，电流密度相对较小。

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