Partially oxidized sub-10 nm MnO nanocrystals with high activity for water oxidation catalysis

Kyoungsuk Jin, Arim Chu, Jimin Park, Donghyuk Jeong, Sung Eun Jerng, Uk Sim, Hui Yun Jeong, Chan Woo Lee, Yong Sun Park, Ki Dong Yang, Gajendra Kumar Pradhan, Donghun Kim, Nark Eon Sung, Sun Hee Kim, Ki Tae Nam

Research output: Contribution to journalArticlepeer-review

95 Citations (Scopus)

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.

Original languageEnglish
Article number10279
JournalScientific reports
Volume5
DOIs
Publication statusPublished - 2015 May 22
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported the Global Frontier R&D Program of the Center for Multiscale Energy Systems funded by the National Research Foundation under the Ministry of Science, ICT & Future, Korea (0420-20130104), the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future(No.Grant Number: 2011-0011225), and the Fusion Research Program for Green Technologies through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future (2012M3C1A1048863) to K.T.N. and KBSI grant T35435 to S.H.K.

ASJC Scopus subject areas

  • General

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