期刊
ACS CATALYSIS
卷 5, 期 8, 页码 4624-4628出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b01269
关键词
water splitting; oxygen evolution reaction (OER); Mn5O8 nanoparticles; micron-sized Mn5O8; electrocatalyst
资金
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Science, ICT and Future, Korea [2011 -0011225, 2011 -0017587, 2012M3A7B4049807]
- Global Frontier R&D Program of the Center for Multiscale Energy System through the National Research Foundation of Korea - Ministry of Science, ICT and Future, Korea [2011-0031574]
- Fusion Research Program for Green Technologies through the National Research Foundation of Korea - Ministry of Science, ICT and Future, Korea [2012M3C1A1048863]
- Ministry of Science, ICT and Future, through the Research Institute of Advanced Materials (RIAM)
- National Research Council of Science and Technology through the Degree & Research Center Program [DRC-14-3-KBSI]
Mn5O8 nanoparticles (NPs) were obtained via the controlled oxidation of MnO NPs. The oxygen evolution reaction (OER) properties of Mn5O8 NPs were evaluated using cyclic voltammetry (CV). A current density of 5 mA/cm2 was reached when 580 mV of overpotential was applied at pH 7.8. Electron paramagnetic resonance (EPR) analysis was conducted to investigate the origin of high OER activity of Mn5O8 NPs. From the EPR analysis, Mn3+ was found to be involved in the OER process of the Mn5O8 materials.
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