Au@Co(2)P core/shell nanoparticles as a nano-electrocatalyst for enhancing the oxygen evolution reaction

Core/shell nanoparticles (NPs) of Au@Co(2)P, each comprising a Au core with a Co(2)P shell, were prepared, and shown to efficiently catalyze the oxygen evolution reaction (OER). In particular, Au@Co(2)P has a small overpotential of 321 mV at 10 mA cm(−2) in 1 M KOH aqueous solution at room temperatu...

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Detalles Bibliográficos
Autores principales: Zhang, Xiaofang, Shan, Aixian, Duan, Sibin, Zhao, Haofei, Wang, Rongming, Lau, Woon-Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9076247/
https://www.ncbi.nlm.nih.gov/pubmed/35540052
http://dx.doi.org/10.1039/c9ra07535f
Descripción
Sumario:Core/shell nanoparticles (NPs) of Au@Co(2)P, each comprising a Au core with a Co(2)P shell, were prepared, and shown to efficiently catalyze the oxygen evolution reaction (OER). In particular, Au@Co(2)P has a small overpotential of 321 mV at 10 mA cm(−2) in 1 M KOH aqueous solution at room temperature, which is about 95 mV less than pure Co(2)P. More importantly, the Tafel slope of Au@Co(2)P, at 57 mV dec(−1), is 44 mV dec(−1) lower than that of Co(2)P. Hence, Au@Co(2)P outperforms Co(2)P drastically in practical production when a high current density is required.

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