Related Experiment Video
Updated: May 12, 2025
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Nitrogen-doped carbon nanotube encapsulated CoCu bimetallic alloy particles to promote efficient oxygen evolution
Xianyu Chu1, Yanan Wang2, Jiayi Sun2
1Key Laboratory of Preparation and Application of Environmental Friendly Materials of the Ministry of Education, Jilin Normal University, Changchun 130103, PR China; Jilin Joint Technology Innovation Laboratory of Developing and Utilizing Materials of Reducing Pollution and Carbon Emissions, College of Engineering, Jilin Normal University, Siping 136000, PR China; The Joint Laboratory of Intelligent Manufacturing of Energy and Environmental Materials, Jilin Normal University, Siping 136000, PR China.
Abstract:
The rational design of efficient and cost-effective transition metal alloy electrocatalysts represents a huge challenge for the oxygen evolution reaction (OER). Herein, the bimetallic CoCu-MOF is employed as a template to significantly enhance the catalytic activity through in situ pyrolysis into melamine-assisted nitrogen-doped carbon nanotube (NCNT) encapsulated metal alloy electrocatalyst (Co1Cu1@NCNT/CC). The Co1Cu1@NCNT/CC demonstrates superior OER activity in 1 M KOH. The overpotential is 263 mV at 10 mA cm-2. Meanwhile, the catalyst exhibits superior long-term stability. The experimental results and density functional theory (DFT) calculations reveal the bimetallic synergies regulate the electronic structure and strong electronic metal-support interaction (EMSI) of the catalysts, increase the electron transport efficiency and optimize the adsorption capacity of oxygen-containing intermediates, leading to a significant improvement in both the OER activity and stability.
