期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 26, 页码 12334-12343出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta02341g
关键词
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资金
- National Natural Science Foundation of China [51772216, 21473122, 21273162, 21501135, 21505100]
- Science and Technology Commission of Shanghai Municipality, China [14DZ2261100]
- Fundamental Research Funds for the Central Universities
- Large Equipment Test Foundation of Tongji University
Recently, the synthesis of porous carbon-based materials, especially those with unique geometry, narrow pore size distribution, large surface area and high nitrogen content, has been highly attractive for widespread applications, but remains a great challenge. Herein, we demonstrate a novel strategy for highly efficient synthesis of high-level N-doped microporous carbon spheres (N-MCSs) based on a very simple Schiff-base reaction of 3,3-diaminobenzidine and p-phthalaldehyde in ethanol solvent without any catalyst or tedious procedure, followed by a common one-step carbonization-activation process. The N-MCSs exhibit a spherical morphology, regular micropores, high surface areas and high nitrogen contents (up to 8.71 at%). N-MCSs used as supercapacitor electrodes deliver high gravimetric capacitance, good rate capability and cycling stability. More importantly, the synthetic approach can be extended to other Schiff-base systems such as p-phthalaldehyde and p-phenylenediamine or ethylenediamine to fabricate porous carbon-based materials with high nitrogen species, tunable morphology and pore structure. The general strategy presented in this study opens up a new window for heteroatom doping, geometry and structure control, and highlights the great potential of well-developed carbon-based materials for extensive applications.
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