Non-uniform Design of PEMFC Cathode Flow Channel Through Quantitative Feedback of Species Transport

YAO Jing; WU Zhen; YANG Fusheng; ZHANG Zaoxiao

doi:10.19805/j.cnki.jcspe.2025.230726

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Non-uniform Design of PEMFC Cathode Flow Channel Through Quantitative Feedback of Species Transport

更新时间：2025-11-28

- Non-uniform Design of PEMFC Cathode Flow Channel Through Quantitative Feedback of Species Transport
- Chinese Journal of Power Engineering Vol. 45, Issue 2, Pages: 253-262(2025)
- 作者机构：
  
  西安交通大学化学工程与技术学院,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.230726
  CLC： TM911.4
- Published Online：15 February 2025，
  
  Published：2025
- 稿件说明：
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尧兢,吴震,杨福胜,张早校. 物质输运定量反馈实现PEMFC阴极流道非均匀设计动力工程学报, 2025, 45(2): 253-262 https://doi.

org/10.19805/j.cnki.jcspe.2025.230726
尧兢,吴震,杨福胜,张早校. 物质输运定量反馈实现PEMFC阴极流道非均匀设计动力工程学报, 2025, 45(2): 253-262 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.230726.

org/10.19805/j.cnki.jcspe.2025.230726 DOI：

摘要

流道非均匀设计是改善质子交换膜燃料电池(PEMFC)内部物理场不均匀分布的最主要方式之一。已有研究设计思路主要是基于对PEMFC工作原理的定性理解确定设计方向

再在此设计方向上进行参数优化

而未能把所得结果反馈用于修正设计思路。对此提出了一种结果反馈再寻优的设计思路

首先对PEMFC结构参数进行参数分析

再对计算结果中物质输运过程进行定量分析

从而反馈确定结构设计方向。采用上述思路对单通道PEMFC流道宽度、单电池子流道高度进行了非均匀设计。结果表明:相比于对照组

采用非均匀设计的PEMFC净功率密度提升幅度为4%~6%

且PEMFC内物理场分布均匀性较好。该研究能够指导PEMFC流道结构不均匀设计方向

助力高性能、长寿命PEMFC设计。

Abstract

Non-uniform design of flow channels is one of the most important ways to improve the uneven distribution of physical fields inside proton exchange membrane fuel cells (PEMFCs). Existing design ideas mainly rely on a qualitative understanding of PEMFC to determine the design direction and further optimizing of parameters in this design direction. Feedback from the obtained results is not used to correct the design ideas. Therefore

a result feedback and then optimization design approach was proposed. In this approach

the structural parameters of PEMFC were first analyzed

and then the species transport processes in the calculation results were quantitatively analyzed to determine the structural design direction. Using the proposed approach

non-uniform designs were carried out for the channel width of single-channel PEMFC and the sub-channel height of single cell. Results show that compared to the base case

the net power density of PEMFC with non-uniform designs is increased by 4%-6%

and the uniformity of physical field distribution inside PEMFC becomes better. This study can provide guidance for the design direction of non-uniform PEMFC channel structure

and contribute to the development of high-performance and long-life PEMFC.

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references

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