Work

CO-tolerant hydrogen oxidation on Pt enabled by ultrathin silica overlayers

Year: 2026

Type: article

Abstract: . RHE delivered a 1.8 times higher time-averaged HOR power density than silica-coated Pt. However, the pulses introduced an 8% energy-efficiency loss and rely on repeated high-potential cycling that accelerates electrode degradation. Importantly, under fixed-current operation, silica-coated Pt reduced the cumulative HOR energy demand under CO contamination by a factor of up to 3.6. These results establish ultrathin silica overlayers as a promising interfacial design strategy for CO-tolerant hydrogen oxidation and motivate translation to gas-diffusion electrodes (GDEs), where homogeneous and selective coating of porous electrodes remains the key challenge.

Source: EES Catalysis

DOI: 10.1039/d6ey00101g

Authors: Christos Englezos, Marco Altomare, Guido Mul, Bastian Mei, Georgios Katsoukis

Institutions: University of Twente, Ruhr University Bochum

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

Funders: Deutsche Forschungsgemeinschaft, Nederlandse Organisatie voor Wetenschappelijk Onderzoek