Partially Oxidized Sub-10 nm MnO Nanocrystals with High Activity for Water Oxidation Catalysis

The oxygen evolution reaction (OER) is considered a major bottleneck in the overall water electrolysis process. In this work, highly active manganese oxide nano-catalysts were synthesized via hot injection. Facile surface treatment generated Mn(III) species on monodisperse 10 nm MnO nanocrystals (NC...

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Detalles Bibliográficos
Autores principales: Jin, Kyoungsuk, Chu, Arim, Park, Jimin, Jeong, Donghyuk, Jerng, Sung Eun, Sim, Uk, Jeong, Hui-Yun, Lee, Chan Woo, Park, Yong-Sun, Yang, Ki Dong, Kumar Pradhan, Gajendra, Kim, Donghun, Sung, Nark-Eon, Hee Kim, Sun, Nam, Ki Tae
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4441116/
https://www.ncbi.nlm.nih.gov/pubmed/25998696
http://dx.doi.org/10.1038/srep10279
Descripción
Sumario:The oxygen evolution reaction (OER) is considered a major bottleneck in the overall water electrolysis process. In this work, highly active manganese oxide nano-catalysts were synthesized via hot injection. Facile surface treatment generated Mn(III) species on monodisperse 10 nm MnO nanocrystals (NCs). Size dependency of MnO NCs on OER activity was also investigated. Surprisingly, the partially oxidized MnO NCs only required 530 mV @ 5 mA cm(−2) under near neutral conditions.

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