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

ABSTRACT: 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.

SUBMITTER: Jin K

PROVIDER: S-EPMC4441116 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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

Jin Kyoungsuk K Chu Arim A Park Jimin J Jeong Donghyuk D Jerng Sung Eun SE Sim Uk U Jeong Hui-Yun HY Lee Chan Woo CW Park Yong-Sun YS Yang Ki Dong KD Kumar Pradhan Gajendra G Kim Donghun D Sung Nark-Eon NE Hee Kim Sun S Nam Ki Tae KT

Scientific reports 20150522

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. ...[more]

PMID: 25998696

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