ENPEMFC微孔层微结构传输现象孔尺度模拟
PORE-SCALE SIMULATION OF MICROSTRUCTURE AND TRANSPORT PHENOMENA IN PEMFC MICRO-POROUS LAYERS
- 太阳能学报 2025年46卷第5期 页码：29-36
- 作者机构：
1. 广东省武理工氢能产业技术研究院,佛山,528200
2. 武汉理工大学汽车工程学院,武汉,430070
3. 中国矿业大学低碳能源与动力工程学院,徐州,221116
- 作者简介：
- 基金信息：广东省基础与应用基础研究基金（2022B1515120079）;国家自然科学基金（52306270）;广东省基础与应用基础研究基金（2022A1515110456）;广东省重点邻域研发计划（2019B090909003）
DOI：10.19912/j.0254-0096.tynxb.2024-0046
中图分类号： K91-
网络出版：2025-06-04，
纸质出版：2025
- 稿件说明：
移动端阅览
王梦丽, 朱礼军, 段康俊, 张恒, 张锐明, 隋邦傑. PEMFC微孔层微结构传输现象孔尺度模拟[J]. 太阳能学报, 2025, 46(5): 29-36.
Wang Mengli, Zhu Lijun, Duan Kangjun, et al. PORE-SCALE SIMULATION OF MICROSTRUCTURE AND TRANSPORT PHENOMENA IN PEMFC MICRO-POROUS LAYERS[J]. 2025, 46(5): 29-36.
王梦丽, 朱礼军, 段康俊, 张恒, 张锐明, 隋邦傑. PEMFC微孔层微结构传输现象孔尺度模拟[J]. 太阳能学报, 2025, 46(5): 29-36. DOI： 10.19912/j.0254-0096.tynxb.2024-0046.
Wang Mengli, Zhu Lijun, Duan Kangjun, et al. PORE-SCALE SIMULATION OF MICROSTRUCTURE AND TRANSPORT PHENOMENA IN PEMFC MICRO-POROUS LAYERS[J]. 2025, 46(5): 29-36. DOI： 10.19912/j.0254-0096.tynxb.2024-0046.
摘要
针对质子交换膜燃料电池微孔层中气液两相流传输问题
提出一种改进的随机数值方法来进行三维微孔层微结构重构
并利用孔尺度模型和格子玻尔兹曼方法分别模拟不同微观结构下微孔层内部的气-液传输。通过对比有效气体扩散率和饱和度
研究碳球直径、播种率和聚四氟乙烯含量对气-液传输的影响。结果表明
微孔层中有效气体扩散率随孔隙率和碳颗粒尺寸的增加而增加
随聚四氟乙烯体积分数和播种率的增大而降低;液态水传输能力随碳颗粒尺寸的增加而增加
随着播种率的增大而减小;液态水传输性能在聚四氟乙烯体积分数为15%时达到最优
这可为膜电极中的传输特性优化设计提供理论依据。
Abstract
An improved stochastic numerical method is proposed to reconstruct the three-dimensional microporous layer （MPL） model. The pore-scale method and lattice Boltzmann method are used to simulate the gas and liquid transport inside the microporous layer with different microstructures. The effects of carbon particle diameter
seed rate and volume fraction of polytetrafluoroethylene （PTFE） on gas-liquid transport were studied by comparing effective gas diffusivity and water saturation. The simulation results show that the MPL effective gas diffusivity increases with porosity and carbon particle’s diameter. In contrast
it decreases with the increase of the volume fraction of polytetrafluoroethylene （PTFE） and the seed rate. It is also found that the MPL’s liquid water transport capability increases with particle diameter and the decrease of the seed rate. Moreover
the liquid water transport is the most favorable when the volume fraction of PTFE is 15%. This study provides theoretical support for the optimal design of MPLs.
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references
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