CoFeNiMnZnB as a High-Entropy Metal Boride to Boost the Oxygen Evolution Reaction
Source abstract
Abstract
High-entropy materials offer numerous advantages as catalysts, including a flexible composition to tune the catalytic activity and selectivity and a large variety of adsorption/reaction sites for multistep or multiple reactions. Herein, we report on the synthesis, properties, and electrocatalytic performance of an amorphous high-entropy boride based on abundant transition metals, CoFeNiMnZnB. This metal boride provides excellent performance toward the oxygen evolution reaction (OER), including a low overpotential of 261 mV at 10 mA cm–2, a reduced Tafel slope of 56.8 mV dec–1, and very high stability. The outstanding OER performance of CoFeNiMnZnB is attributed to the synergistic interactions between the different metals, the leaching of Zn ions, the generation of oxygen vacancies, and the in situ formation of an amorphous oxyhydroxide at the CoFeNiMnZnB surface during the OER.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Diamond and Carbon-based Materials Research · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona 08930, Spain
Departament d’Enginyeria Electrònica i Biomèdica, Universitat de Barcelona, Barcelona, Catalonia 08028, Spain
Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163 Italy
Institute of Science and Technology Austria (IST Austria), Am Campus 1, Klosterneuburg 3400, Austria
Department of Materials Science, Physical and Chemical Properties of Materials, South Ural State University, 76 Lenin Avenue, Chelyabinsk 454080, Russia
School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
ICREA Pg. Lluis Companys, Barcelona, Catalonia 08010, Spain
Funding
China Scholarship Council · Blond McIndoe Research Foundation
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