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汽车安全与节能学报 ›› 2024, Vol. 15 ›› Issue (6): 848-855.DOI: 10.3969/j.issn.1674-8484.2024.06.006

• 汽车节能与环保 • 上一篇    下一篇

质子交换膜水电解流道结构优化研究

蒲东义1(), 张硌1, 胡松1,2,*(), 陈东方1, 李跃华1, 徐晓明1   

  1. 1.北京科技大学 机械工程学院，北京，100083，中国
    2.北京科技大学 顺德创新学院，佛山，528000，中国
  • 收稿日期:2023-11-10 修回日期:2024-10-14 出版日期:2024-12-31 发布日期:2025-01-01
  • 通讯作者: *胡松，讲师。E-mail：husong_90@163.com。
  • 作者简介:蒲东义（1999—），男（汉），重庆，硕士研究生。E-mail：1341490897@qq.com。
  • 基金资助:
    汽车安全与节能国家重点实验室开放基金课题(KFY2219);佛山市科技创新专项资金项目(BK22BE010)

Study of flow field of proton exchange membrane water electrolysis

PU Dongyi1(), ZHANG Luo1, HU Song1,2,*(), CHEN Dongfang1, LI Yuehua1, XU Xiaoming1   

  1. 1. School of mechanical engineering, University of Science and Technology Beijing, Beijing, 100083, China
    2. Shunde Innovation School, University of Science and Technology, Foshan 528000, China
  • Received:2023-11-10 Revised:2024-10-14 Online:2024-12-31 Published:2025-01-01

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摘要：

研究了质子交换膜电解电池（PEMEC）内流场结构对于水电解反应物质的传输与转移的影响。通过仿真软件COMSOL 建模，改变PEMEC流道宽度与流道脊宽度之比 （流道脊宽比， γ）与流道数目（λ），研究在流道宽度固定为1 mm的情况下，γ与λ变化对PEMEC 性能的影响。结果表明：当γ = 1时的电解质电流密度最高，比γ = 2时的电池电流密度高6.9%，比γ = 3时的电流密度高13.8%；当λ增加时，PEMEC性能会发生较大变化。当固定γ = 1时，流道数目λ的增加会增大PEMEC流道压降，有利于电流密度与氧气的均匀分布，从而提升PEMEC性能，增大电流密度；但增加流道数目，也会增大流阻，影响氧气排出。

关键词: 质子交换膜电解电池（PEMEC）, 软件COMSOL建模, 流道脊宽比, 流道数目, 压降

Abstract:

The effect of the flow field structure on the transport and transfer of water electrolysis reaction substances within a proton exchange membrane electrolysis cell (PEMEC) was investigated. Through the simulation software COMSOL modelling, the ratio of the PEMEC flow channel width to the flow channel ridge width (γ) and the number of flow channels (λ) were varied to study the effects of the changes of γ and λ on the performance of the PEMEC with the flow channel width fixed at 1 mm. The results show that the electrolyte current density is highest at γ = 1, which is 6.9% higher than that of the cell with γ = 2 and 13.8% higher than that of γ = 3. When λ is increased, the PEMEC performance changes considerably. When γ = 1 is fixed and λ is changed, it is found that the increase in the number of flow channels increases the PEMEC flow channel pressure drop, which is beneficial to the uniform distribution of current density and oxygen, thus promoting the PEMEC performance improvement and current density increase. However, an increase in the number of flow channels also leads to an increase in flow resistance, which affects oxygen discharge.

Key words: proton exchange membrane electrolysis cell (PEMEC), software COMSOL simulation, ridge width ratio, current density, pressure drop

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