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Optimizing Alkaline Water Electrolysis: A Dual-Model Approach for Enhanced Hydrogen Production Efficiency

Author

Listed:
  • Simin Luo

    (Qingdao Xinde New Energy Ltd., Qingdao 266021, China)

  • Tengfei Zhang

    (College of Chemical Engineer, Beijing University of Chemical Technology, Beijing 100029, China)

  • Hongning Xu

    (College of Chemical Engineer, Beijing University of Chemical Technology, Beijing 100029, China)

  • Jie Zhang

    (College of Chemical Engineer, Beijing University of Chemical Technology, Beijing 100029, China)

  • Haichao Zhao

    (Qingdao Xinde New Energy Ltd., Qingdao 266021, China)

  • Jimmy Yun

    (Qingdao Xinde New Energy Ltd., Qingdao 266021, China)

  • Hong Zhao

    (College of Chemical Engineer, Beijing University of Chemical Technology, Beijing 100029, China)

Abstract

This study develops a semi-empirical model of an alkaline water electrolyzer (AWE) based on thermodynamic and electrochemical principles to investigate cell voltage behavior during electrolysis. By importing polarization curve test data under specific operational conditions, eight undefined parameters are precisely fitted, demonstrating the model’s high accuracy in describing the voltage characteristics of alkaline electrolyzers. Additionally, an AWE system model is introduced to examine the influence of various operational parameters on system efficiency. This innovative approach not only provides detailed insights into the operational dynamics of AWE systems but also offers a valuable tool for optimizing performance and enhancing efficiency, advancing the understanding and optimization of AWE technologies.

Suggested Citation

  • Simin Luo & Tengfei Zhang & Hongning Xu & Jie Zhang & Haichao Zhao & Jimmy Yun & Hong Zhao, 2024. "Optimizing Alkaline Water Electrolysis: A Dual-Model Approach for Enhanced Hydrogen Production Efficiency," Energies, MDPI, vol. 17(21), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:21:p:5512-:d:1513667
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    References listed on IDEAS

    as
    1. Jang, Dohyung & Cho, Hyun-Seok & Kang, Sanggyu, 2021. "Numerical modeling and analysis of the effect of pressure on the performance of an alkaline water electrolysis system," Applied Energy, Elsevier, vol. 287(C).
    2. Jeddizahed, Javad & Webley, Paul A. & Hughes, Thomas J., 2024. "Integrating alkaline electrolysis with oxyfuel combustion for hydrogen and electricity production," Applied Energy, Elsevier, vol. 361(C).
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