An Efficient and Earth‐Abundant Oxygen‐Evolving Electrocatalyst Based on Amorphous Metal Borides |
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| Authors: | Jean Marie Vianney Nsanzimana Yuecheng Peng Yang Yang Xu Larissa Thia Cheng Wang Bao Yu Xia Xin Wang |
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| Institution: | 1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore;2. Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education, Hubei), Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, P. R. China;3. Institute for New Energy Materials and Low‐Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, P. R. China |
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| Abstract: | Cost‐effective and efficient oxygen‐evolving electrocatalysts are urgently required for energy storage and conversion technologies. In this work, an amorphous trimetallic boride nanocatalyst (Fe–Co–2.3Ni–B) prepared by a simple approach is reported as a highly efficient oxygen evolution reaction electrocatalyst. It exhibits an overpotential (η) of 274 mV to deliver a geometric current density (jgeo) of 10 mA cm?2, a small Tafel slope of 38 mV dec?1, and excellent long‐term durability at a mass loading of 0.3 mg cm?2. The impressive electrocatalytic performance originates from the unique amorphous multimetal–metalloid complex nanostructure. From application's point of view, this work holds great promise as this process is simple and allows for large‐scale production of cheap, yet efficient, material. |
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| Keywords: | amorphous structures electrocatalysts electronic effects metal boride oxygen evolution |
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