New strategy for reversal tolerant anode for automotive polymer electrolyte fuel cell |
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Authors: | Chanho Pak Seung Woo Lee Chaekyung Baik Bong Ho Lee Dae Jong You Eunyoung You |
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Institution: | Graduate Program of Energy Technology, School of Integrated Technology, Institute of Integrated Technology, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea; Fuel Cell Engineering Core Technology Team, Division of Electric Powertrain, Hyundai Mobis, Co., Ltd., Yongin, Gyeonggi-do 16891, Republic of Korea |
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Abstract: | Since the commercialization of the fuel cell electric vehicles (FCEVs), the polymer electrolyte membrane fuel cell system has been actively improved as a powertrain for ultimate environment-friendly vehicle. During the FCEV operation, various transient conditions such as start-up/shut-down and fuel starvation occur irregularly, which deteriorates the durability of the membrane electrode assembly. In particular, when fuel starvation occurs, the carbon support in the anode is oxidized within few minutes, thus the mitigation of this phenomenon is essential for securing the durability. This short review introduces the concept of reversal tolerant anode (RTA), which is a mitigation method using an oxygen evolution catalyst and reviews some previous reports. In addition, new approach for RTA suggested by authors recently, which is the replacement of Pt anode catalyst by multifunctional IrRu alloy catalyst that simultaneously exhibits the activities for the hydrogen oxidation reaction and the oxygen evolution reaction is introduced. |
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Keywords: | Multifunctional IrRu alloy catalyst Reversal tolerant anode Hydrogen oxidation reaction catalyst Oxygen evolution reaction catalyst Cell reversal durability Polymer electrolyte membrane fuel cell |
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