阳极流道沟槽结构对PEM电解槽性能影响研究

范磊; 夏鹏; 刁永发

doi:10.12299/jsues.24-0049

阳极流道沟槽结构对PEM电解槽性能影响研究

doi: 10.12299/jsues.24-0049

范磊^1,,
夏鹏^1, ,,
刁永发²

1.
上海工程技术大学机械与汽车工程学院, 上海 201620
2.
东华大学环境科学与工程学院, 上海 201620

基金项目: 国家重点研发计划项目（2021YFA1500904）

详细信息

作者简介:
范磊：范　磊（1996− ），男，硕士生，研究方向为质子交换膜电解槽仿真。E-mail：fanlei9376@163.com

通讯作者:
夏　鹏（1979− ），男，副教授，博士，研究方向为制冷与低温工程。E-mail：pxiazju@sues.edu.cn

中图分类号: TQ116.2 + 1
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- 文章访问数: 14
- HTML全文浏览量: 9
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2024-03-04
- 网络出版日期: 2025-09-30
- 刊出日期: 2025-06-30

Study on influence of anodic channel groove structure on performance of PEM electrolyzer

FAN Lei^1
,,
XIA Peng^{1
, ,},
DIAO Yongfa²

1.
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2.
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China

摘要

摘要: 建立质子交换膜(proton exchange membrane, PEM)单电解槽传热传质两相流稳态模型，研究阳极流道中不同沟槽结构（三角形、齿形和雁形）对PEM电解槽性能的影响，探究沟槽深度、数量及间距等参数的影响。结果表明，在阳极流道中引入沟槽可改善电化学性能，增强传热传质，提高电解槽效率，且雁形沟槽优化效果最佳。在0.4 ~1.6 mm深度范围，0.8 mm对应的电解槽性能最佳。相较于常规流道结构，优化后电解槽达到相同电流密度所需的电势更低，阳极区域内水饱和度（体积分数）和氧气含量（体积分数）更佳，质子交换膜温度更低，电解槽性能得到提升。
- 质子交换膜电解槽 /
- 沟槽 /
- 电化学 /
- 传热传质
Abstract: A steady-state two-phase heat and mass transfer model was developed for a single proton exchange membrane (PEM) electrolyzer to investigate the effects of different groove structures (triangular, tooth-shaped and goose-shaped) on its performance. The influence of groove depth, number and spacing was examined. The results show that incorporating grooves in the anode flow channel can improve electrochemical performance, enhance the heat and mass transfer, and increase the efficiency of the electrolyzer, with the best optimization effect of the goose-shaped groove. Within the range of 0.4~1.6 mm in depth, the electrolyzer corresponding to 0.8 mm has the best performance. Compared to a conventional flow channel, the optimized electrolyzer has a lower potential to achieve the same current density, has a better proportion of water saturation and oxygen content in the anode region, and has a lower proton exchange membrane temperature, thereby improving the performance of the electrolyzer.
- proton exchange membrane (PEM) electrolyzer /
- groove /
- electrochemistry /
- heat and mass transfer

HTML全文

图 1 PEM电解槽基本结构示意图

Figure 1. Schematic diagram of basic structure of PEM electrolyzer

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图 2 单通道PEM电解槽结构示意图

Figure 2. Structure diagram of single-channel PEM electrolyzer

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图 3 网格无关性分析和仿真结果与试验对比

Figure 3. Grid independence analysis and comparison of simulation results and experimental data

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图 4 不同结构三维模型

Figure 4. Three dimensional models of different structures

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图 5 各结构性能随电压变化情况

Figure 5. Performance of each structure changes with voltage

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图 6 不同沟槽设计方案 x-y方向截面图

Figure 6. Cross sections of different trench design schemes along x-y direction

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表 1 物理参数表

Table 1. Physical parameters

参数	符号	单位	数值
工作温度	T	K	353.15
接触角	θ	(°)	80
双极板电导率	σ_BP	S/m	20000^[8]
催化层电导率	σ_CL	S/m	5000^[8]
扩散层渗透率	K_GDL	m²	10⁻¹²^[8]
催化层渗透率	K_CL	m²	10⁻¹³^[8]
阳极电荷传输系数	α_a		0.5^[8]
阴极电荷传输系数	α_c		0.5^[8]
法拉第常数	F	C/mol	96485^[10]
通用气体常数	R	J/(mol·K)	8.314^[10]
扩散层孔隙率	ε_GDL		0.5^[12]
催化层孔隙率	ε_CL		0.25^[12]

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表 2 PEM模型几何结构参数

Table 2. Geometric structure parameters of PEM model

几何结构	数值/mm
电解槽长度	50
电解槽宽度	4
流道宽度	2
流道高度	2
双极板高度	2.5
催化层厚度	0.05
扩散层厚度	0.3
质子交换膜厚度	0.178

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表 3 沟槽深度对PEM电解槽性能的影响

Table 3. Effect of groove depth on performance of PEM electrolyzer

沟槽深度/ mm	电势/V	阳极扩散层水饱和度/%	阳极扩散层氧气含量/%	质子交换膜最高温度/K	阳极流道平均速度/ (m·s⁻¹)
0.4	2.0919	57.13	54.22	354.97	0.1508
0.6	2.0908	57.35	53.99	354.94	0.1559
0.8	2.0895	57.49	53.86	354.89	0.1600
1.0	2.0911	57.50	54.10	354.87	0.1623
1.2	2.0917	54.74	56.74	354.93	0.1381
1.4	2.0910	54.03	57.50	355.00	0.1357
1.6	2.0921	53.78	57.79	355.04	0.1403

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表 4 沟槽布置方案

Table 4. Groove layout programme

沟槽布置方案	沟槽深度/ mm	沟槽宽度/ mm	沟槽距入口宽度/mm	沟槽间距/ mm	沟槽数量
方案1	0.8	2	2	3	7
方案2	0.8	2	3	4	6
方案3	0.8	2	3.5	6	5
方案4	0.8	2	3.5	9	4

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表 5 沟槽间距和数量对PEM电解槽性能的影响

Table 5. Effect of groove spacing and number on performance of PEM electrolyzer

沟槽布置方案	电势/V	阳极扩散层水饱和度/%	阳极扩散层氧气含量/%	质子交换膜最高温度/K	阳极流道平均速度 /(m·s⁻¹)
方案1	2.0910	56.27	55.09	354.89	0.1636
方案2	2.0891	56.47	54.89	354.92	0.1589
方案3	2.0854	58.41	55.07	353.44	0.1547
方案4	2.0873	56.28	52.97	354.95	0.1507

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参考文献(15)

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