2012年2月，纳米材料与化学研究部俞书宏教授研究组在JOURNAL OF THE AMERICAN CHEMICAL SOCIETY上发表题为Water Oxidation Electrocatalyzed by an Efficient Mn3O4/CoSe2 Nanocomposite的论文。

Source: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Volume: 134 Issue: 6 Pages: 2930-2933 DOI: 10.1021/ja211526y Published: FEB 15 2012
Gao, MR (Gao, Min-Rui)1; Xu, YF (Xu, Yun-Fei)1; Jiang, J (Jiang, Jun)1; Zheng, YR (Zheng, Ya-Rong)1; Yu, SH (Yu, Shu-Hong)1
Addresses:
1. Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Dept Chem, Div Nanomat & Chem,Hefei Natl Lab Phys Sci Micros, Hefei 230026, Anhui, Peoples R China
E-mail Address: shyu@ustc.edu.cn

Reprint Address: Yu, SH (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Dept Chem, Div Nanomat & Chem,Hefei Natl Lab Phys Sci Micros, Hefei 230026, Anhui, Peoples R China

Abstract: The design of efficient, cheap, and abundant oxygen evolution reaction (OER) catalysts is crucial to the development of sustainable energy sources for powering fuel cells. We describe here a novel Mn3O4/CoSe2 hybrid which could be a promising candidate for such electrocatalysts. Possibly due to the synergetic chemical coupling effects between Mn3O4 and CoSe2, the constructed hybrid displayed superior OER catalytic performance relative to its parent CoSe2/DETA nanobelts. Notably, such earth-abundant cobalt (Co)-based catalyst afforded a current density of 10 mA cm(-2) at a small overpotential of similar to 0.45 V and a small Tafel slope down to 49 mV/decade, comparable to the best performance of the well-investigated cobalt oxides. Moreover, this Mn3O4/CoSe2 hybrid shows good stability in 0.1 M KOH electrolyte, which is highly required to a promising OER electrocatalyst.