Journal
CHEMELECTROCHEM
Volume 6, Issue 2, Pages 535-542Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201801185
Keywords
carbon monolith; materials science; nitrogen-doping; self-assembly; supercapacitors
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Funding
- National Natural Science Foundation of China [21676070]
- Excellent Going Abroad Experts' Training Program in Hebei Province
- Hebei One Hundred-Excellent Innovative Talent Program (III) [SLRC2017034]
- Hebei Science and Technology Project [17214304D, 16214510D]
- Special Project for Synthesis and Application of Graphene in Hebei University of Science and Technology [2015PT65]
- Beijing National Laboratory for Molecular Sciences
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A nitrogen-doped porous carbon monolith (N-PCM) was synthesized following a simple self-assembly method in a one-pot hydrothermal process. A solution of hexamethylenetetramine (HMT) in formaldehyde and ammonia was used as partial carbon precursor and nitrogen source, respectively. The monolithic polymer was formed through self-assembly of formaldehyde and resorcinol catalyzed by ammonia. After the annealing process, the N-PCM was prepared. The N-PCM with tailorable macrostructure possessed a high specific surface area (1124 m(2) g(-1)), rich porous structure and reasonable N content (up to 2.1 %). Used as binder-free all-carbon supercapacitor electrode, the N-PCM allowed efficient migration of electrolyte ions and electrons, showing a high specific capacitance up to 202 F g(-1) at a current density of 1 A g(-1), and favorable capacitance retention (93.5 % capacitive retention after 5000 cycles) in a 6 M KOH solution. This advanced monolith carbon material with high surface area and controllable morphology produced in a simple and efficient method could be used as a promising electrode material for high-performance supercapacitors.
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