Earth-Abundant Oxygen Electrocatalysts for Alkaline Anion-Exchange-Membrane Water Electrolysis: Effects of Catalyst Conductivity and Comparison with Performance in Three-Electrode Cells

By Dongyu Xu, M. Stevens, Monty R. Cosby, S. Oener, A. M. Smith, Lisa J. Enman, K. Ayers, Christopher B. Capuano, J. Renner, Nemanja Danilovic and 4 more. ACS Catalysis, 2018

260 citations recorded by the source corpus.

Anion exchange membrane (AEM) electrolysis is a promising technology to produce hydrogen through the splitting of pure water. In contrast to proton-exchange-membrane (PEM) technology, which requires precious-metal oxide anodes, AEM systems allow for the use of earth-abundant anode catalysts. Here we report a study of first-row transition-metal (oxy)hydroxide/oxide catalyst powders for application in AEM devices and compare physical properties and performance to benchmark IrOx catalysts as well as typical catalysts for alkaline electrolyzers. We show that the catalysts’ oxygen-evolution activity measured in alkaline electrolyte using a typical three-electrode cell is a poor indicator of performance in the AEM system. The best oxygen-evolution-reaction (OER) catalysts in alkaline electrolyte, NiFeOxHy oxyhydroxides, are the worst in AEM electrolysis devices where a solid alkaline electrolyte is used along with a pure water feed. NiCoOx-based catalysts show the best performance in AEM electrolysis. The perfo...

Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/3e8fdf5af0d87bfc8e8761ed8af3db47f7484ac8

How researchers see this paper

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In Electrical and Electronic Engineering

1. P. Strasser
2. I. Stephens
3. B. Roldán Cuenya
4. Karen Chan
5. M. Koper
6. A. Varela
7. S. Boettcher
8. J. Rossmeisl

In Renewable Energy, Sustainability and the Environment

1. P. Strasser
2. Karen Chan
3. A. Varela
4. B. Roldán Cuenya
5. I. Stephens
6. J. Rossmeisl
7. M. Koper
8. A. Bagger

Citations in the corpus

• 2022 roadmap on low temperature electrochemical CO2 reduction (2022, background): “It is well-known for other electrochemical reactions, such as oxygen reduction reaction, that substantial discrepancies exist between performance in a rotating disc setup versus in a membrane-electrode assembly (MEA) configuration [202].”