Study on interdigital flow field structure and two phase flow characteristics of PEM electrolyzer

IF 3.8 3区工程技术 Q3 ENERGY & FUELS

Chemical Engineering and Processing - Process Intensification Pub Date : 2024-06-23 DOI:10.1016/j.cep.2024.109868

Liu Jianxin , Wang Le , Zhang Xiaolei , Habudula Gulizhaina , Chai Xuedi , Huang Lihua

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Abstract

Proton exchange membrane (PEM) electrolytic hydrogen production has the advantages of high current density, high operating pressure, wide power regulation range and so on. It has good adaptability to wind and photovoltaic power with high volatility and recognized as an important way to solve the effective utilization of renewable energy. In PEM electrolyzer cell (PEMEC), anode flow field plate plays a crucial role in the process of water electrolysis to produce oxygen, which affects the of gas and liquid transfer. Among them, the channel blockage caused by bubble retention is an important factor limiting the performance of PEMEC. In this paper, an interdigital flow field plate is designed based on the plant leaf vein system. The two-phase flow behaviors within the interdigital flow field channel are studied. The results show that the interdigital flow field plate is superior to the traditional serpentine flow field in terms of electrolytic efficiency and voltage loss. The reaction kinetics rate is accelerated, the overall ohmic resistance is reduced by about 4.8 %, and the hydrogen production is increased by about 9.1 %. The above research can provide guidance for the structural improvement and performance improvement of PEMEC.

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PEM 电解槽的数字间流场结构和两相流动特性研究

质子交换膜（PEM）电解制氢具有电流密度大、工作压力高、功率调节范围广等优点。它对高波动性的风能和光伏发电具有良好的适应性，被公认为是解决可再生能源有效利用的重要途径。在 PEM 电解槽（PEMEC）中，阳极流场板在水电解产生氧气的过程中起着至关重要的作用，它影响着气体和液体的传输。其中，气泡滞留造成的通道堵塞是限制 PEMEC 性能的重要因素。本文以植物叶脉系统为基础，设计了一种叶间流场板。研究了叶脉间流场通道内的两相流动行为。结果表明，在电解效率和电压损耗方面，数字间流场板优于传统的蛇形流场。反应动力学速率加快，整体欧姆电阻降低了约 4.8%，氢气产量提高了约 9.1%。上述研究可为 PEMEC 的结构改进和性能提高提供指导。

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来源期刊

Chemical Engineering and Processing - Process Intensification 工程技术-工程：化工

CiteScore

7.80

自引率

9.30%

发文量

408

审稿时长

49 days

期刊介绍： Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.