Journal
CHINESE CHEMICAL LETTERS
Volume 30, Issue 7, Pages 1423-1427Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2019.03.004
Keywords
Issolution-reassembly; Hollow micro/meso-carbon spheres; Supercapacitor; Oligomer; Low-molecular-weight
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Funding
- National Natural Science Foundation of China [21676070]
- Hebei One Hundred-Excellent Innovative Talent Program (III) [SLRC2017034]
- Beijing National Laboratory for Molecular Sciences
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Herein, we report a dissolution-reassembly approach for preparation of N-doped hollow carbon spheres with mesoporous/microporous composite structure (H(Micro/Meso)CS). Basing on the compositional inhomogeneity inside the nanospheres of 3-aminophenol/formaldehyde (3-AF) polymerization, the internal 3-AF oligomer with low-molecular-weight is dissolved by acetone to form cavity. Then the dispersive 3-AF oligomer reassemble with silica oligomer as pore-forming agent and cetyltrimethyl-ammonium bromide as surfactant to form a mesoporous outer shell. In addition, the amount of acetone has a great influence on the morphology and structure of H(Micro/Meso)CS. The obtained H(Micro/Meso)CS shows uniform spherical and microporous/mesoporous shell structure and has a high specific capacity and excellent high rate capability. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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