Study of relative humidity on durability of the reversal tolerant proton exchange membrane fuel cell anode using a segmented cell

Wang, Yajun1,2; Xie, Xiaojun4; Zhou, Chang1,3; Feng, Qi1,3; Zhou, Yong4; Yuan, Xiao-Zi5; Xu, Jiaoyan3; Fan, Jiantao3; Zeng, Lin2; Li, Hui3; Wang, Haijiang2

2020

10.1016/j.jpowsour.2019.227542

JOURNAL OF POWER SOURCES   影响因子和分区

0378-7753

1873-2755

Cell voltage reversal resulted from hydrogen starvation at the anode is one of the factors that exacerbate the overall degradation of proton exchange membrane fuel cells (PEMFCs). An effective mitigation strategy is to involve oxygen evolution reaction (OER) catalysts into the anode to facilitate water electrolysis against carbon corrosion. As such, this paper aims to study the influence of relative humidity (RH) on the performance and durability of reversal-tolerant-anodes (RTAs) during hydrogen starvation. An advanced segmented technique is employed to examine the coupling reactions by simultaneously measuring current density, RH and temperature in a fuel cell with a large active area. It is found that the inlet of RTAs undergoes degradation earlier than the outlet and the membrane electrode assembly (MEA) with a RTA has an optimal humidity during cell reversal. Results also show that the failure of the RTA MEA is due to a loss of electron conduction medium rather than the deactivation of the OER catalyst. In addition, this work highlights the importance of plate flow field design and the OER catalyst gradient design of the RTA MEA.
© 2019 Elsevier B.V.

Proton exchange membrane fuel cell Hydrogen starvation Reversal tolerant anode Segmented cell Degradation Oxygen evolution reaction catalyst

EI ; SCI

英语

通讯

Development and Reform Commission of Shenzhen Municipality[1106] ; Development and Reform Commission of Shenzhen Municipality[1181] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N500] ; National Basic Research Program of China (973 Program)[2017YFB0102701] ; Shenzhen Peacock Plan[KQTD2016022620054656]

Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000510947000051

Elsevier B.V.

20195007815576

Anodes ; Catalysts ; Corrosion ; Degradation ; Durability ; Hydrogen ; More electric aircraft

Fuel Cells:702.2 ; Electron Tubes:714.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804

MATERIALS SCIENCE

EV Compendex

1.School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin; 150001, China
2.Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen; Guangdong; 518055, China
3.Department of Materials Science and Engineering, Shenzhen Key Laboratory of Hydrogen Energy, Southern University of Science and Technology, Shenzhen; Guangdong; 518055, China
4.Shenzhen Nan Ke Fuel Cell Co. Ltd, Shenzhen; Guangdong; 518055, China
5.Research Center of Energy, Mining and Environment, National Research Council Canada, 4250 Wesbrook Mall, Vancouver; V6T1W5, Canada

Wang, Yajun,Xie, Xiaojun,Zhou, Chang,et al. Study of relative humidity on durability of the reversal tolerant proton exchange membrane fuel cell anode using a segmented cell[J]. JOURNAL OF POWER SOURCES,2020,449.

Wang, Yajun.,Xie, Xiaojun.,Zhou, Chang.,Feng, Qi.,Zhou, Yong.,...&Wang, Haijiang.(2020).Study of relative humidity on durability of the reversal tolerant proton exchange membrane fuel cell anode using a segmented cell.JOURNAL OF POWER SOURCES,449.

Wang, Yajun,et al."Study of relative humidity on durability of the reversal tolerant proton exchange membrane fuel cell anode using a segmented cell".JOURNAL OF POWER SOURCES 449(2020).