Journal
CCS CHEMISTRY
Volume 3, Issue 2, Pages 870-881Publisher
CHINESE CHEMICAL SOC
DOI: 10.31635/ccschem.020.202000233
Keywords
multistage self-assembly; mesoporous carbon; nitrogen-doped carbon; high pyridine nitrogen; supercapacitor
Categories
Funding
- Young Thousand Talented Program
- National Natural Science Foundation of China [21671073, 21621001]
- 111 Project of the Ministry of Education of China [B17020]
- Program for JLU Science and Technology Innovative Research Team
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The two-dimensional N-doped mesoporous carbon synthesized using a multi-stage self-assembly strategy exhibited high surface area and controllable N content, leading to significantly improved electrochemical performance.
Nitrogen doping could improve the performance of carbon materials in electrocatalysis, CO2 adsorption, and energy storage. ([1])However, the control of the doping type and the amount of nitrogen (N)-doped in carbon materials in a simple and environmentally friendly way remains challenging. Herein, we report a facile, multistage, self-assembly strategy for the synthesis of two-dimensional N-doped mesoporous carbon (2D NMC) by using graphene oxide (GO) as a structure-directing agent. The resultant 2D GO@NMCs rendered quantitatively controllable mesopores (8-25 nm). The 2D GO@NMCs rendered quantitatively controllablemesopores (8-25nm), high and controllable N content (up to 19 wt %), and the percentages of pyridine and pyridone/pyrrolic N atoms were as high as 49.9% and 35.3%, respectively. Due to these unique characteristics, the fabricated 2D GO@NMCs exhibited an ultrahigh surface-areanormalized capacitance of up to 90.6 mu F cm(-2), which was much higher than the theoretical electrochemical double-layer capacitance of activated carbon (15-25 mu F cm(-2)). Moreover, our proposed multistage self-assembly strategy is versatile, and thus, could be extended to the synthesis of one-dimensional (1D) nanotubes@NMC and zero-dimensional (0D) nano-spheres@NMC materials.
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