Molybdenum Carbide-Reduced Graphene Oxide Composites as Electrocatalysts for Hydrogen Evolution

被引：20

作者：

Caliskan, Salim ^{[1
]}

Wang, Anqi ^{[1
]}

Qin, Fen ^{[1
]}

House, Stephen D. ^{[1
,2
]}

Lee, Jung-Kun ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA

[2] Univ Pittsburgh, Environm TEM Catalysis Consortium ECC, Pittsburgh, PA 15261 USA

来源：

ACS APPLIED NANO MATERIALS | 2022年 / 5卷 / 03期

基金：

美国国家科学基金会;

关键词：

molybdenum carbide; reduced graphene oxide; hydrogen evolution reaction; electrocatalyst; microwave-assisted reaction; EFFICIENT ELECTROCATALYST; POROUS CARBON; MO2C NANOPARTICLES; METAL CARBIDES; CATALYST; NANOTUBES; MICROSPHERES; NANOSHEETS; GRAPHITE;

D O I：

10.1021/acsanm.1c04253

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The development of cost-effective, highly efficient, and stable electrocatalysts to replace expensive platinum-like metal catalysts remains a great challenge for the hydrogen evolution reaction (HER). In this study, we report a facile, microwave-assisted solvothermal (MWSV) synthesis of molybdenum carbide (Mo2C) nanoparticles and molybdenum carbide-reduced graphene oxide (Mo2C-RGO) nanocomposites at elevated temperatures. The optimized Mo2C-RGO nano-composite catalysts show excellent HER performance in acidic media. When GO is added, the onset potential and Tafel slope of the nanocomposite catalyst are 120 mV and 85 mV/dec, respectively. The catalysts also exhibit good stability in an acidic environment. This improvement of the carbide catalyst is attributed to highly accessible active reaction sites, efficient mass/charge transportation, and enhanced conductivity of the hybrid structure.

引用

页码：3790 / 3798

页数：9

共 55 条

[1] Porous molybdenum carbide microspheres as efficient binder-free electrocatalysts for suspended hydrogen evolution reaction [J].