title: 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.
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Kyoungsuk
authors.initials: K
authors.lastname: Jin
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Arim
authors.initials: A
authors.lastname: Chu
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Jimin
authors.initials: J
authors.lastname: Park
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Donghyuk
authors.initials: D
authors.lastname: Jeong
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Sung Eun
authors.initials: SE
authors.lastname: Jerng
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Uk
authors.initials: U
authors.lastname: Sim
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Hui-Yun
authors.initials: HY
authors.lastname: Jeong
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Chan Woo
authors.initials: CW
authors.lastname: Lee
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Yong-Sun
authors.initials: YS
authors.lastname: Park
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Ki Dong
authors.initials: KD
authors.lastname: Yang
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Gajendra
authors.initials: G
authors.lastname: Kumar Pradhan
authors.affiliation: Division of Materials Science, Korea Basic Science Institute, Daejeon, 305-333, Korea.
authors.forename: Donghun
authors.initials: D
authors.lastname: Kim
authors.affiliation: Pohang Accelerator Laboratory, POSTECH, Pohang, 790-784, South Korea.
authors.forename: Nark-Eon
authors.initials: NE
authors.lastname: Sung
authors.affiliation: Division of Materials Science, Korea Basic Science Institute, Daejeon, 305-333, Korea.
authors.forename: Sun
authors.initials: S
authors.lastname: Hee Kim
authors.affiliation: 1] Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Korea [2] Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 151-744, Korea.
authors.forename: Ki Tae
authors.initials: KT
authors.lastname: Nam