Oxygen Evolution Reaction of Co-Mn-O Electrocatalyst Prepared by Solution Combustion Synthesis

被引：15

作者：

Park, Kyoung Ryeol ^{[1
]}

Jeon, Jae Eun ^{[1
]}

Ali, Ghulam ^{[2
]}

Ko, Yong-Ho ^{[3
]}

Lee, Jaewoong ^{[3
]}

Han, HyukSu ^{[4
]}

Mhin, Sungwook ^{[3
]}

机构：

[1] Hanyang Univ, Dept Mat Sci & Engn, Seoul 04763, South Korea

[2] Univ Punjab, Dept Phys, Lahore 54590, Pakistan

[3] Korea Inst Ind Technol, Gaetbeol Ro 156, Incheon 21999, South Korea

[4] Hongik Univ, Dept Mat Sci & Engn, Sejong Ro 2639, Sejong, South Korea

来源：

CATALYSTS | 2019年 / 9卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

cobalt manganese oxide; solution combustion synthesis; electrocatalyst; oxygen evolution reaction; water splitting; WATER OXIDATION; CO3O4; NANOCRYSTALS; REDUCTION REACTION; HIGHLY EFFICIENT; COBALT; OXIDES; PHASE; FILMS;

D O I：

10.3390/catal9060564

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页数：16

共 38 条

[1] Sucrose-aided combustion synthesis of nanosized LiMn1.99-yLiyM0.01O4 (M = Al3+, Ni2+, Cr3+, Co3+, y=0.01 and 0.06) spinels Characterization and electrochemical behavior at 25 and at 55 °C in rechargeable lithium cells [J].