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Updated: Feb 20, 2026
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
Hierarchically interconnected nitrogen-doped carbon nanosheets for an efficient hydrogen evolution reaction.
Hao Wang1, Qinghua Yi, Lijun Gao
1Soochow Institute for Energy and Materials InnovationS, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China. gaolijun@suda.edu.cn zouguifu@suda.edu.cn.
Nitrogen-doped carbon nanosheets (NCNS) were synthesized using a self-foaming method. These metal-free NCNS show excellent performance and stability for the hydrogen evolution reaction (HER), advancing renewable energy solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Renewable Energy
Background:
- Developing efficient electrocatalysts for the hydrogen evolution reaction (HER) is crucial for clean energy.
- Earth-abundant, low-cost catalysts are needed to replace expensive noble metals.
Purpose of the Study:
- To synthesize novel nitrogen-doped carbon nanosheets (NCNS) using a facile self-foaming strategy.
- To evaluate the electrocatalytic activity and stability of NCNS for HER in acidic media.
Main Methods:
- Hierarchically interconnected NCNS were synthesized via a self-foaming method.
- Electrocatalytic performance for HER was assessed using techniques like cyclic voltammetry and linear sweep voltammetry.
- Stability was tested over extended periods in acidic electrolyte.
Main Results:
- The synthesized NCNS demonstrated excellent HER activity with an onset potential of -65 mV.
- A low Tafel slope of 81 mV dec⁻¹ indicated efficient charge transfer kinetics.
- The NCNS exhibited robust stability for over 10 hours of operation.
Conclusions:
- The developed NCNS are highly promising metal-free electrocatalysts for the hydrogen evolution reaction.
- Graphitic nitrogen species within the carbon network are identified as key active sites.
- This work offers a viable pathway for cost-effective hydrogen production.
