1. One-pot Hydrothermal Synthesis of Bifunctional Co/Mo-rGO efficient Electrocatalyst for HER/OER in Water Splitting.
- Author
-
Zhao, Lishuang, Liu, Siyan, Wei, Liguo, He, Huiyi, Jiang, Bo, Zhan, Zhaoshun, Wang, Jing, Li, Xuewei, and Gou, Wentao
- Subjects
CARBON-based materials ,OXYGEN evolution reactions ,ELECTROCHEMICAL apparatus ,HYDROTHERMAL synthesis ,LAMINATED metals ,ELECTROCATALYSTS ,HYDROGEN evolution reactions ,GRAPHENE oxide - Abstract
Fabrication of highly efficient and earth-abundant bifunctional electrocatalyst to accelerate the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are critical for overall water splitting. In this work, bimetallic Co/Mo oxides modified reduced graphene oxide (rGO) was synthesized using a simple one-pot hydrothermal method, which significantly improved the electrocatalytic activity in both HER and OER. Under the optimal conditions, the double layer capacitance of rGO modified by Co/Mo bimetal is 78.08 mF cm
−2 . The overpotential required for HER to reach -10 mA cm−2 current density is 488 mV, the dynamic Tafel slope is 126 mV dec−1 . The overpotential required for OER to reach 10 mA cm−2 current density is 420 mV, the slope of kinetic Tafel is 169 mV dec−1 . This work provides a new prospect for the rational design and fabrication of efficient HER/OER bifunctional electrocatalysts in electrochemical energy device application. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF