Air and H-2 feed systems optimization for open-cathode proton exchange membrane fuel cells

Zhao, Chen1; Xing, Shuang2; Liu, Wei2; Wang, Haijiang2

2021-03-23

10.1016/j.ijhydene.2021.01.044

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

1879-3487

In this study, air and H-2 feed systems optimization for open-cathode proton exchange membrane fuel cells (PEMFCs) has been evaluated. For air feed system, a spoiler was introduced. The air velocity distribution, polarization curve, single-cell voltage distribution, and temperature distribution of the 11-cell open-cathode fuel cell stack with blowing, blowing-spoiler, and drawing air feed system were assessed. On this basis, the influences of the distance between the fan and stack with different air feed systems were investi-gated. The results show that the application of the spoiler could solve the problem of low air velocity in the middle of the stack and increase stack performance by 7.3%. And drawing air feed system could enhance the heat dissipation capacity of the stack and the uniformity of temperature distribution, resulting in the 7.9% stack performance increase. Optimization of the distance between the fan and stack enhances the full development of turbulence and the rate of heat transfer. In addition, the effects of four different H-2 feed systems and the flow direction between air and hydrogen on the fuel cell performance were also investigated. It is beneficial for open-cathode PEMFC to be operated with the location of the H-2 inlet and outlet staggered in two different endplates for better stack performance and single-cell voltage uniformity. Evidence also shows that the higher per-formance also could be obtained when the flow direction of air and hydrogen is vertical with lower ohmic resistance, charge and mass transfer resistance. The study contributes to the design of the open-cathode fuel cell stack to get better performance and reliability. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Open-cathode PEMFC Feed system Performance Spoiler Uniformity

SCI ; EI

英语

通讯

National Key Research and Development Program of China[2017YFB0102701] ; Shenzhen Peacock Plan[KQTD2016022620054656] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N500] ; Development and Reform Commission of Shenzhen Municipality[1181,1106] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; Shenzhen Key Laboratory project[ZDSYS201603311013489]

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000631558200002

PERGAMON-ELSEVIER SCIENCE LTD

20210709917228

Air ; Cathodes ; Heat transfer ; Hydrogen ; Mass transfer ; Ohmic contacts ; Temperature distribution

Heat and Mass Transfer; Thermodynamics:641 ; Fuel Cells:702.2 ; Chemical Products Generally:804

ENGINEERING

Web of Science

1.Shenzhen Polytech, Dept New Energy Vehicle Technol, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China

Zhao, Chen,Xing, Shuang,Liu, Wei,et al. Air and H-2 feed systems optimization for open-cathode proton exchange membrane fuel cells[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2021,46(21):11940-11951.

Zhao, Chen,Xing, Shuang,Liu, Wei,&Wang, Haijiang.(2021).Air and H-2 feed systems optimization for open-cathode proton exchange membrane fuel cells.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,46(21),11940-11951.

Zhao, Chen,et al."Air and H-2 feed systems optimization for open-cathode proton exchange membrane fuel cells".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46.21(2021):11940-11951.