Investigation of IrRu-based OER Catalysts using Heteroatom doped-Ordered Mesoporous Carbon Supports for Reversal Tolerant Anode of PEMFC

Abstract

In fuel cell electric vehicles (FCEVs), hydrogen fuel starvation occurs under various transient operation conditions, which causes carbon corrosion in the anode leading to cell failure. To prevent cell degradation, the oxygen evolution reaction (OER) catalysts have been suggested as one of the strategies for reversal tolerant anode (RTA) strategy. In this study, IrRu-based OER catalysts using different heteroatom-doped ordered mesoporous carbon supports were investigated to improve the activity towards OER. The activity for OER is the highest in the case of S-OMC, which means the electronic structure of Ir would be changed by the increased metal-support interaction