Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 30, Issue 38, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202004330
Keywords
dual phase; electrocatalyst; oxygen evolution reaction; phase engineering; water splitting
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Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [2018R1D1A1A02085938]
- KIST Institutional Program [2E30202]
- KIST Institutional Program (KIST alumni project)
- National Research Foundation of Korea [2018R1D1A1A02085938] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The development of earth-abundant and efficient oxygen evolution reaction (OER) electrocatalysts is necessary for green hydrogen production. The preparation of efficient OER electrocatalysts requires both the adsorption sites and charge transfer on the catalyst surface to be suitably engineered. Herein, the design of an electrocatalyst is reported with significantly enhanced water oxidation performance via dual-phase engineering, which displays a high number of adsorption sites and facile charge transfer. More importantly, a simple chemical etching process enables the formation of a highly metallic transition boride phase in conjunction with the transition metal hydroxide phase with abundant adsorption sites available for the intermediates formed in the OER. In addition, computational simulations are carried out to demonstrate the water oxidation mechanism and the real active sites in this engineered material. This research provides a new material design strategy for the preparation of high-performance OER electrocatalysts.
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