阴极过量系数与流场布置对风冷燃料电池性能影响的数值模拟

doi:10.11949/0438-1157.20230894

摘要/Abstract

摘要：

风冷燃料电池性能较差仍然是限制其商业化应用的关键问题。采用数值模拟研究了阴极氧气过量系数以及氢/空布置方式对风冷燃料单电池性能的影响。结果表明，阴极过量系数过低时，风冷燃料电池无法满足散热需求，提高过量系数有利于风冷燃料电池热管理，提升膜电极中膜态水含量和电池性能，为了保证风冷燃料电池运行安全，需尽量维持风冷燃料电池运行在中高过量系数。与氢/空顺流布置相比，氢/空逆流布置策略受阳极入口干氢气影响膜电极呈现局部脱水状态，导致性能略微降低。

关键词: 燃料电池, 数值模拟, 过量系数, 流场布置, 水热管理

Abstract:

The poor performance of air-cooled fuel cells remains a key issue limiting their commercial application. This study used numerical simulation to investigate the effects of cathode oxygen stoichiometric ratio and hydrogen/air arrangement on the performance of air-cooled fuel cell. The results indicate that when the stoichiometric ratio is low, air-cooled fuel cells cannot meet the heat dissipation needs. Increasing the stoichiometric ratio is beneficial for thermal management of air-cooled fuel cells, improving the membrane water content in the membrane electrode and fuel cell performance. In order to ensure the safe operation of air-cooled fuel cells, it is necessary to maintain the operation of air-cooled fuel cells at medium to high stoichiometric ratio. Compared with the hydrogen/air co-current arrangement, the hydrogen/air counter-current arrangement strategy is affected by the dry hydrogen at the anode inlet. The membrane electrode exhibits a local dehydration state, resulting in a slight reduction in performance.

Key words: fuel cells, numerical simulation, stoichiometric ratio, flow field arrangement, water and thermal management

中图分类号:

TK 121

彭明, 夏强峰, 蒋理想, 陈黎, 陶文铨. 阴极过量系数与流场布置对风冷燃料电池性能影响的数值模拟[J]. 化工学报, 2023, 74(10): 4267-4276.

Ming PENG, Qiangfeng XIA, Lixiang JIANG, Li CHEN, Wenquan TAO. Numerical simulation on the effect of cathode stoichiometric ratio and flow field arrangement on the performance of air-cooled fuel cells[J]. CIESC Journal, 2023, 74(10): 4267-4276.

图/表 13

图1 风冷燃料电池单电池结构

Fig.1 Schematic of single air-cooled PEM fuel cell configuration

表1 风冷燃料电池单电池几何结构参数

Table 1 Geometric structural parameters of air-cooled single PEM fuel cell

几何结构	描述	数值/mm
阴极流道	宽度, W_cGC	1.2
	深度, d_cGC	1.4
阳极流道	宽度, W_aGC	0.9
	深度, d_aGC	0.6
扩散层	厚度, δ_GDL	0.25
微孔层	厚度, δ_MPL	0.03
催化层	厚度, δ_CL	0.03
质子交换膜	厚度, δ_MEM	0.025
阴极肋	宽度, W_cBP	1.2
阳极肋	宽度, W_aBP	1.8
极板	长度, L	108
极板	宽度, W	48.6

图2 氢/空流场布置与网格剖分示意图

Fig.2 Schematic of hydrogen/air flow field layout and grid system

图3 阴极过量系数对单电池电流密度与阴极出口温度的影响

Fig.3 Effects of cathode stoichiometric ratio on the current density and cathode outlet temperature

图4 阴极过量系数对阴极催化层氧浓度分布的影响

Fig.4 Effects of cathode stoichiometric ratio on the oxygen concentration distribution in the cathode catalytic layer

图5 阴极过量系数对阴极催化层温度分布的影响

Fig.5 Effects of cathode stoichiometric ratio on the temperature distribution in the cathode catalytic layer

图6 阴极过量系数对阴极催化层膜态水分布的影响

Fig.6 Effect of cathode stoichiometric ratio on the membrane water distribution in the cathode catalytic layer

图7 阴极过量系数对阴极催化层电流密度分布的影响

Fig.7 Effects of cathode stoichiometric ratio on the current density distribution in the cathode catalytic layer

图8 氢/空布置方式对风冷燃料电池电流密度的影响

Fig.8 Effect of hydrogen/air arrangement on the current density of air-cooled single fuel cell

图9 氢/空布置方式对阴极催化层氧浓度分布的影响

Fig.9 Effects of hydrogen/air arrangement on the oxygen concentration distribution in the cathode catalytic layer

图10 氢/空布置方式对阴极催化层温度分布的影响

Fig.10 Effects of hydrogen/air arrangement on the temperature distribution in the cathode catalytic layer

图11 氢/空布置方式对阴极催化层膜态水分布的影响

Fig.11 Effects of hydrogen/air arrangement on the membrane water distribution in the cathode catalytic layer

图12 氢/空布置方式对阴极催化层电流密度分布的影响

Fig.12 Effects of hydrogen/air arrangement on the current density distribution in the cathode catalytic layer

参考文献 32

1	Boukoberine M N, Zhou Z B, Benbouzid M. A critical review on unmanned aerial vehicles power supply and energy management: solutions, strategies, and prospects[J]. Applied Energy, 2019, 255: 113823.
2	Wen C Y, Lin Y S, Lu C H. Performance of a proton exchange membrane fuel cell stack with thermally conductive pyrolytic graphite sheets for thermal management[J]. Journal of Power Sources, 2009, 189(2): 1100-1105.
3	Min C H, Gao X M, Li F, et al. Thermal performance analyses of pulsating heat pipe for application in proton exchange member fuel cell[J]. Energy Conversion and Management, 2022, 259: 115566.
4	Sasmito A P, Birgersson E, Mujumdar A S. Numerical investigation of liquid water cooling for a proton exchange membrane fuel cell stack[J]. Heat Transfer Engineering, 2011, 32(2): 151-167.
5	Bargal M H S, Abdelkareem M A A, Tao Q, et al. Liquid cooling techniques in proton exchange membrane fuel cell stacks: a detailed survey[J]. Alexandria Engineering Journal, 2020, 59(2): 635-655.
6	Faghri A, Guo Z. Challenges and opportunities of thermal management issues related to fuel cell technology and modeling[J]. International Journal of Heat and Mass Transfer, 2005, 48(19/20): 3891-3920.
7	Chen Q, Zhang G B, Zhang X Z, et al. Thermal management of polymer electrolyte membrane fuel cells: a review of cooling methods, material properties, and durability[J]. Applied Energy, 2021, 286: 116496.
8	Yuan W W, Ou K, Kim Y B. Thermal management for an air coolant system of a proton exchange membrane fuel cell using heat distribution optimization[J]. Applied Thermal Engineering, 2020, 167: 114715.
9	Al-Zeyoudi H, Sasmito A P, Shamim T. Performance evaluation of an open-cathode PEM fuel cell stack under ambient conditions: case study of United Arab Emirates[J]. Energy Conversion and Management, 2015, 105: 798-809.
10	Dhathathreyan K S, Rajalakshmi N, Jayakumar K, et al. Forced air-breathing PEMFC stacks[J]. International Journal of Electrochemistry, 2012, 2012: 1-7.
11	De las Heras A, Vivas F J, Segura F, et al. Air-cooled fuel cells: keys to design and build the oxidant/cooling system[J]. Renewable Energy, 2018, 125: 1-20.
12	Zhao C, Xing S, Liu W, et al. Air and H₂ feed systems optimization for open-cathode proton exchange membrane fuel cells[J]. International Journal of Hydrogen Energy, 2021, 46(21): 11940-11951.
13	朱星光, 贾秋红, 陈唐龙, 等. 质子交换膜燃料电池阴极风扇系统实验研究[J]. 中国电机工程学报, 2013, 33(11): 47-53, 9.
	Zhu X G, Jia Q H, Chen T L, et al. Experimental study on characteristics of cathode fan systems of proton exchange membrane fuel cells[J]. Proceedings of the CSEE, 2013, 33(11): 47-53, 9.
14	Pløger L J, Fallah R, Al Shakhshir S, et al. Improving the performance of an air-cooled fuel cell stack by a turbulence inducing grid[J]. ECS Transactions, 2018, 86(13): 77-87.
15	Zhao C, Xing S, Liu W, et al. Performance and thermal optimization of different length-width ratio for air-cooled open-cathode fuel cell[J]. Renewable Energy, 2021, 178: 1250-1260.
16	魏琳, 郭剑, 廖梓豪, 等. 空气流量对空冷燃料电池电堆性能的影响研究[J]. 化工学报, 2022, 73(7): 3222-3231.
	Wei L, Guo J, Liao Z H, et al. Influence of air flow rate on the performance of air-cooled hydrogen fuel cell stack[J]. CIESC Journal, 2022, 73(7): 3222-3231.
17	Wilberforce T, El Hassan Z, Ogungbemi E, et al. A comprehensive study of the effect of bipolar plate (BP) geometry design on the performance of proton exchange membrane (PEM) fuel cells[J]. Renewable and Sustainable Energy Reviews, 2019, 111: 236-260.
18	Li X G, Sabir I. Review of bipolar plates in PEM fuel cells: flow-field designs[J]. International Journal of Hydrogen Energy, 2005, 30(4): 359-371.
19	赵强, 郭航, 叶芳, 等. 质子交换膜燃料电池流场板研究进展[J]. 化工学报, 2020, 71(5): 1943-1963.
	Zhao Q, Guo H, Ye F, et al. State of the art of flow field plates of proton exchange membrane fuel cells[J]. CIESC Journal, 2020, 71(5): 1943-1963.
20	Zhang G B, Wu L Z, Tongsh C, et al. Structure design for ultrahigh power density proton exchange membrane fuel cell[J]. Small Methods, 2023, 7(3): 2201537.
21	潘伟童. 质子交换膜燃料电池放大效应及流动均布与水管理过程研究[D]. 上海: 华东理工大学, 2022.
	Pan W T. Study on scale-up effects and flow distribution and water management processes of proton exchange membrane fuel cells[D].Shanghai: East China University of Science and Technology, 2022.
22	Min C H, He J, Wang K, et al. A comprehensive analysis of secondary flow effects on the performance of PEMFCs with modified serpentine flow fields[J]. Energy Conversion and Management, 2019, 180: 1217-1224.
23	Geng Q T, Han Y R, Li B Z, et al. Optimal and modeling study of air-cooled proton exchange membrane fuel cell with various length-width ratio and numbers[J]. International Communications in Heat and Mass Transfer, 2023, 142: 106668.
24	Atyabi S A, Afshari E, Shakarami N. Three-dimensional multiphase modeling of the performance of an open-cathode PEM fuel cell with additional cooling channels[J]. Energy, 2023, 263: 125507.
25	Peng M, Chen L, Zhang R Y, et al. Improvement of thermal and water management of air-cooled polymer electrolyte membrane fuel cells by adding porous media into the cathode gas channel[J]. Electrochimica Acta, 2022, 412: 140154.
26	Zhang G B, Qu Z G, Wang Y. Full-scale three-dimensional simulation of air-cooled proton exchange membrane fuel cell stack: temperature spatial variation and comprehensive validation[J]. Energy Conversion and Management, 2022, 270: 116211.
27	Mu Y T, He P, Ding J, et al. Modeling of the operation conditions on the gas purging performance of polymer electrolyte membrane fuel cells[J]. International Journal of Hydrogen Energy, 2017, 42(16): 11788-11802.
28	彭明, 夏强峰, 蒋理想, 等. 流道布置对风冷燃料电池性能影响的研究[J]. 化工学报, 2022, 73(10): 4625-4637.
	Peng M, Xia Q F, Jiang L X, et al. Study on the effect of gas channel arrangement on the performance of air-cooled fuel cells[J]. CIESC Journal, 2022, 73(10): 4625-4637.
29	陶文铨. 数值传热学[M]. 2版. 西安: 西安交通大学出版社, 2001.
	Tao W Q. Numerical Heat Transfer[M]. 2nd ed. Xi'an: Xi'an Jiaotong University Press, 2001.
30	Yu X X, Chang H W, Zhao J J, et al. Effects of anode flow channel on performance of air-cooled proton exchange membrane fuel cell[J]. Energy Reports, 2022, 8: 4443-4452.
31	Hu M, Zhao R, Pan R, et al. Disclosure of the internal transport phenomena in an air-cooled proton exchange membrane fuel cell ( Ⅱ ) : Parameter sensitivity analysis[J]. International Journal of Hydrogen Energy, 2021, 46(35): 18589-18603.
32	Shahsavari S, Desouza A, Bahrami M, et al. Thermal analysis of air-cooled PEM fuel cells[J]. International Journal of Hydrogen Energy, 2012, 37(23): 18261-18271.

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