Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack

doi:10.1016/j.ijhydene.2020.03.031

GIEC OpenIR

	Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack
	Wei, Lin 1; Dafalla, Ahmed Mohmed 1,2; Jiang, Fangming1
	2020-05-05
发表期刊	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN	0360-3199
卷号	45 期号:24 页码:13469-13482
通讯作者	Jiang, Fangming(fm_jiang2000@yahoo.com)
摘要	The failure at equally distributing reactants among different channels within the stack leads to uneven reaction and gas concentration distribution in the catalyst layers, which consequently impacts the performance and durability of proton exchange membrane fuel cell stacks (PEMFCs). A three-dimensional, transient, non-isothermal cold start model for PEMFCs with parallel flow-field configuration and coolant circulation is developed in this work to investigate the effects of non-uniform distribution of reactants/coolant inflow rates on the cold start process. The results show that the effect of non-uniform inflow on ice formation amount is obvious and that on the distribution uniformity of current density is apparent over the cold start survival time. Additionally, the simulation predictions show that the non-uniform initial membrane water content distribution due to the purge procedure can significantly increase the rate of ice growth and deteriorate the uniformity of current density distribution in the membrane. It is found that high stoichiometry operating condition is favorable to cold startup, but may result in drying in the membrane at regions close to the channel inlet side. As non-uniform inflow rates issue is inevitable in actual PEMFC stack operation conditions, our results demonstrate that the initial membrane water content and cathode stoichiometry ratio need to be identified to moderate the effects of reactants/coolant inflow maldistribution and to maintain a stable cold start performance for the PEMFC stack. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词	Proton exchange membrane fuel cell Cold start Coolant Numerical model
DOI	10.1016/j.ijhydene.2020.03.031
关键词[WOS]	MEMBRANE FUEL-CELL ; FLOW-FIELDS ; PROTON TRANSPORT ; SELF-START ; PARALLEL ; BEHAVIOR ; DESIGN ; CONDUCTIVITY ; PARAMETERS ; CHANNEL
收录类别	SCI
语种	英语
资助项目	China National Key RD Project[2018YFB0905303] ; Shanghai Automotive Industry Sci-Tech Development Foundation[1706] ; Guangdong Science and Technology Department[2017B010120003] ; Guangdong Science and Technology Department[2016A030313172] ; Guangdong Science and Technology Department[2015A030308019]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
项目资助者	China National Key RD Project ; Shanghai Automotive Industry Sci-Tech Development Foundation ; Guangdong Science and Technology Department
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000528271900029
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/26828
专题	中国科学院广州能源研究所
通讯作者	Jiang, Fangming
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Adv Energy Syst, CAS Key Lab Renewable Energy,Guangdong Key Lab Ne, Guangzhou, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wei, Lin,Dafalla, Ahmed Mohmed,Jiang, Fangming. Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2020,45(24):13469-13482.
APA	Wei, Lin,Dafalla, Ahmed Mohmed,&Jiang, Fangming.(2020).Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,45(24),13469-13482.
MLA	Wei, Lin,et al."Effects of reactants/coolant non-uniform inflow on the cold start performance of PEMFC stack".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45.24(2020):13469-13482.