Oxygen Evolution Reaction of Co-Mn-O Electrocatalyst Prepared by Solution Combustion Synthesis
- Authors
- Park, Kyoung Ryeol; Jeon, Jae Eun; Ali, Ghulam; Ko, Yong-Ho; Lee, Jaewoong; Han, HyukSu; Mhin, Sungwook
- Issue Date
- Jun-2019
- Publisher
- MDPI
- Keywords
- cobalt manganese oxide; solution combustion synthesis; electrocatalyst; oxygen evolution reaction; water splitting
- Citation
- CATALYSTS, v.9, no.6
- Journal Title
- CATALYSTS
- Volume
- 9
- Number
- 6
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/1488
- DOI
- 10.3390/catal9060564
- ISSN
- 2073-4344
- Abstract
- High-performance oxygen evolution reaction (OER) electrocatalysts are needed to produce hydrogen for energy generation through a carbon-free route. In this work, the solution combustion synthesis (SCS) method was employed to synthesize mixed phases of Co- and Mn-based oxides, and the relationships between the crystalline structure and the catalytic properties in the mixed phases were established. The mixed phases of Co- and Mn-based oxides shows promising OER properties, such as acceptable overpotential (450 mV for 10 mA.cm(-2)) and Tafel slope (35.8 mV.dec(-1)), highlighting the use of the mixed phases of Co- and Mn-based oxides as a new efficient catalysts for water splitting. Electronic structure of the mixed phases of Co- and Mn based oxides is studied in detail to give insight for the origin of high catalytic activities. In addition, excellent long-term stability for OER in alkaline media is achieved for the mixed phase of Co- and Mn based oxides.
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Collections - College of Science and Technology > Major in Ceramic Engineering > 1. Journal Articles
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