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首页> 外文期刊>Journal of Energy Storage >Parametric study of a proton exchange membrane compressor for electrochemical hydrogen storage using numerical assessment
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Parametric study of a proton exchange membrane compressor for electrochemical hydrogen storage using numerical assessment

机译：使用数值评估的电化学储氢的质子交换膜压缩机的参数研究

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摘要

This paper investigates a single cell proton exchange membrane based electrochemical hydrogen compressor for hydrogen storage purposes. This work applies a three-dimensional numerical model based on single-domain method in order to simulate the thermal and electrochemical kinetics of the electrochemical cell. The design parameters including operating temperature, pressure, the thickness and porosity of the gas diffusion layer, and channel dimension affect the electrochemical hydrogen compression cell performance. The results show that the performance of the cell improves by increasing the operating temperature at high current density, but it has a negligible effect within the activation region. Increase of pressure from 1 bar to 20 bar at the current density of 5000 A m(-2) reduces the overall cell voltage by almost 24% and the cell performance deteriorates. The results indicate that increase of gas diffusion layer thickness from 0.2 to 0.5 mm has a negative effect on the performance of electrochemical cell. Moreover, a comparison between different gas diffusion layer porosities shows no significant effect on the polarization curve due to the high permeability of hydrogen. Furthermore, the required voltage will be grown in the range of 87.84 -70.61 mV by varying the channel rib in the range of 0.5 -1 mm.
机译：本文研究了用于储氢目的的单电池质子交换膜基电化学氢气压缩机。这项工作适用于基于单域法的三维数值模型，以模拟电化学电池的热敏和电化学动力学。设计参数包括气体扩散层的工作温度，压力，厚度和孔隙率，以及通道尺寸影响电化学氢气压缩电池性能。结果表明，通过在高电流密度提高工作温度，电池的性能提高，但在激活区域内具有可忽略的效果。从1巴到20巴的压力的增加在5000a m（-2）的电流密度下将整体电池电压降低了近24％，电池性能劣化。结果表明，增加0.2至0.5mm的气体扩散层厚度对电化学电池的性能产生负面影响。此外，不同气体扩散层孔隙孔之间的比较显示由于氢的高渗透性导致对偏振曲线没有显着影响。此外，通过改变沟道肋在0.5 -1mm的范围内，所需电压将在87.84 -70.61 mV的范围内。

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