Tri‐Metallic Catalyst for Oxygen Evolution Reaction Enables Continuous Operation of Anion Exchange Membrane Electrolyzer at 1A cm −2 for Hundreds of Hours
[10]
- Department of Nuclear Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
- Department of Chemistry Illinois Institute of Technology Chicago IL 60616 USA, SE‐MAT Smartly Engineered Materials LLC Pittsburgh PA 15238 USA
- Department of Materials Science and Engineering University of Toronto Toronto Ontario M5S 3G4 Canada
- School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Dr NW Atlanta GA 30332 USA, Department of Chemical Engineering Hongik University 94 Wausan‐ro Mapo‐gu Seoul 04066 Republic of Korea
- School of Chemical and Biomolecular and Engineering Georgia Institute of Technology 311 Ferst Dr NW Atlanta GA 30332 USA
- Department of Nano Engineering Faculty of Nanotechnology for Postgraduate Studies Sheikh Zayed Branch Campus Cairo University Sheikh Zayed City 12588 Egypt, Nanotechnology and Advanced Materials Laboratory Nuclear Materials Authority 3rd settlement 11936 Egypt, Department of Materials Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
- Department of Materials Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
- School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Dr NW Atlanta GA 30332 USA
- Department of Chemistry Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- Department of Nuclear Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA, Department of Materials Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Ave Cambridge MA 02139 USA
Abstract Although numerous efforts are made to synthesize active electrocatalysts for green hydrogen production; catalyst stability, and facile synthesis to scale up the production are still challenging. Herein, the production of novel non‐PGM catalysts for the oxygen reduction reaction (OER) in an alkaline aqueous medium is reported, which is based on the synthesis of a trimetallic metal–organic framework (MOF) precursors. Fine‐tuning of the composition of the metal centers (Ni, Co, and Fe) shows a great effect on OER activity after the MOF undergoes dynamic chemical and structural transformations under OER conditions. In situ characterization reveals the origin of OER activity enhancement as metals’ oxidation state increases, inducing compressive mechanical strain on metal centers, enhancing the electronic conductivity through the formation of oxygen vacancies, and stronger metal–oxygen covalency. Catalysts are used in membrane electrode assembly (MEA) setup within an industrial full‐cell anion exchange membrane electrolyzer (AEMEC), showing a stable performance for 550 h without noticeable decay at 750 and 1000 mA cm −2 industrial level current densities.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- NONE; SC0023450
- OSTI ID:
- 2325434
- Journal Information:
- Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 16 Vol. 14; ISSN 1614-6832
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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