Affiliation:
1. Forschungszentrum Jülich GmbH Institute of Energy and Climate Research Electrochemical Process Engineering (IEK-14) 52425 Jülich Germany
2. Faculty of Mechanical Engineering RWTH Aachen University 52056 Aachen Germany
3. Present address: Chemistry and Nanoscience Center National Renewable Energy Laboratory (NREL) Golden CO 80401 United States
Abstract
AbstractEfficient and durable catalysts for the oxygen evolution reaction (OER) are of great importance for energy storage and conversion devices. However, an objective evaluation and fair comparison of different catalysts remain challenging due to the different catalyst loadings and substrates for OER measurements. In this work, we investigated NiFe layer double hydroxide and commercial Ni/NiO catalysts with different loadings and substrates of glassy carbon (GC), porous nickel foam (NF), and carbon paper (CP). The activity, cycling stability, and potentiostatic stability of the catalysts are compared with respect to the loading and substrate. Catalyst loading exhibits a volcano trend with OER activity, while it has little impact on stability. The 3D substrates NF and CP significantly improved the OER activity of the catalysts compared to GC, especially at higher loadings. The consistent degradation trend of the catalysts confirms the validity of using NF or CP as substrates for the stability test.
Funder
Fuel Cells and Hydrogen Joint Undertaking
Subject
Electrochemistry,Catalysis
Cited by
12 articles.
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