Ir-Pt/C composite with high metal loading as a high-performance anti-reversal anode catalyst for proton exchange membrane fuel cells

Wang，Yameng1; Liao，Jianhua1; Li，Zheng1; Wu，Buke1; Lou，Jialu1; Zeng，Lin1,2; Zhao，Tianshou3

2022-03-26

10.1016/j.ijhydene.2022.02.065

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   影响因子和分区

0360-3199

1879-3487

Voltage reversal induced by hydrogen starvation can severely corrode the anode catalyst support and deteriorate the performance of proton exchange membrane fuel cells. A material-based strategy is the inclusion of an oxygen evolution reaction catalyst (e.g., IrO) in the anode to promote water electrolysis over harmful carbon corrosion. In this work, an Ir-Pt/C composite catalyst with high metal loading is prepared. The membrane-electrode-assembly (MEA) with 80 wt% Ir-Pt(1:2)/C shows a first reversal time (FRT) of up to 20 hours, which is about ten times that of MEA with 50 wt% Ir-Pt(1:2)/C does. Furthermore, the MEA with 80 wt% Ir-Pt(1:2)/C exhibits a minimum cell voltage loss of 6 mV@1 A/cm when the FRT is terminated in 2 hours, in which the MEA with 50 wt% Ir-Pt(1:2)/C exhibits a voltage loss of 105 mV@1 A/cm. Further physicochemical and electrochemical characterizations demonstrate that the destruction of anode catalyst layer caused by the voltage reversal process is alleviated by the use of the composite catalyst with high metal loading. Hence, our results reveal that the combination of OER catalyst on the Pt/C with high metal loading is a promising approach to alleviate the degradation of anode catalyst layer during the voltage reversal process for PEMFCs.

Composite catalyst High metal loading Hydrogen starvation Proton exchange membrane fuel cell Voltage reversal

SCI ; EI

英语

第一 ; 通讯

Natural Science Foundation of Guangdong Province[2021A1515010412];National Natural Science Foundation of China[21905129];

Chemistry ; Electrochemistry ; Energy & Fuels

Chemistry, Physical ; Electrochemistry ; Energy & Fuels

WOS:000783633000009

PERGAMON-ELSEVIER SCIENCE LTD

20221111792923

Anodes ; Catalyst supports ; Corrosion ; Hydrogen ; Iridium compounds ; Metals ; More electric aircraft ; Platinum alloys

Precious Metals:547.1 ; Aircraft, General:652.1 ; Fuel Cells:702.2 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804

ENGINEERING

2-s2.0-85126328741

Scopus

1.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Key Laboratory of Energy Conversion and Storage Technologies,Southern University of Science and Technology,Ministry of Education,Shenzhen,518055,China
3.Guangzhou HKUST Fok Ying Tung Research Institute,Guangzhou,511458,China

Wang，Yameng,Liao，Jianhua,Li，Zheng,et al. Ir-Pt/C composite with high metal loading as a high-performance anti-reversal anode catalyst for proton exchange membrane fuel cells[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2022,47(26):13101-13111.

Wang，Yameng.,Liao，Jianhua.,Li，Zheng.,Wu，Buke.,Lou，Jialu.,...&Zhao，Tianshou.(2022).Ir-Pt/C composite with high metal loading as a high-performance anti-reversal anode catalyst for proton exchange membrane fuel cells.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,47(26),13101-13111.

Wang，Yameng,et al."Ir-Pt/C composite with high metal loading as a high-performance anti-reversal anode catalyst for proton exchange membrane fuel cells".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 47.26(2022):13101-13111.