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Cited by 331

The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.

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

Open access
Xu, Dongyu, Stevens, Michaela Burke, Cosby, Monty R., Oener, Sebastian Z., Smith, Adam M., Enman, Lisa J., Ayers, Katherine E., Capuano, Christopher B., Renner, Julie N., Danilovic, Nemanja, Li, Yaogang, Wang, Hongzhi, Zhang, Qinghong, Boettcher, Shannon W.·2019·ACS Catalysis
DOI 10.1021/acscatal.8b04001
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Abstract

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 IrO x 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, NiFeO x H y oxyhydroxides, are the worst in AEM electrolysis devices where a solid alkaline electrolyte is used along with a pure water feed. NiCoO x -based catalysts show the best performance in AEM electrolysis. The performance can be further improved by adding Fe species to the particle surface. We attribute the differences in performance in part to differences in the electrical conductivity of the catalyst phases, which are also measured and reported.

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Metadata

Authors
Xu, D., Stevens, M. B., Cosby, M. R., Oener, S. Z., Smith, A. M., Enman, L. J., Ayers, K. E., Capuano, C. B., Renner, J. N., Danilovic, N., Li, Y., Wang, H., Zhang, Q., & Boettcher, S. W.
Venue
ACS Catalysis
Publisher
American Chemical Society (ACS)
Published
2018-11-15
Volume
9
Issue
1
Pages
7-15
ISSN
2155-5435 (ISSN-L)
DOI
10.1021/acscatal.8b04001
OpenAlex
W2900744414
Cited by
331
References
50
FWCI
4.24
Type
journal article
Language
en
Open access
green

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