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- Title
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
- 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.
- Subjects
ELECTROCATALYSTS; SELF-propagating high-temperature synthesis; OXYGEN evolution reactions; HYDROGEN evolution reactions; HYDROGEN as fuel; INTERSTITIAL hydrogen generation; CRYSTAL structure
- Publication
Catalysts (2073-4344), 2019, Vol 9, Issue 6, p564
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal9060564