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Li, Fei, Huang, Xinhua, Wang, Nuoya, Zhu, Xingxing, Chan, Vincent, Zhao, Ruikun and Chao, Yimin 
ORCID: https://orcid.org/0000-0002-8488-2690
(2020)
Aminal/Schiff-base polymer to fabricate nitrogen-doped porous carbon nanospheres for high performance supercapacitors.
ChemElectroChem, 7 (18).
pp. 3859-3865.
ISSN 2196-0216
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Abstract
In this study, a polymer-containing aminal and imine (C=N) linkages was synthesized from the reaction between p-phthalaldehyde and 2,6-diaminepyridine through nucleophilic addition. Subsequently, nitrogen-doped carbon nanospheres (N-CNSs) were fabricated by a process of sequential potassium hydroxide (KOH) activation and direct carbonization of the polymer. Interestingly, the mass ratio (x) of the polymer to KOH was found to play a crucial role in dictating the porosity, surface chemistry, and capacitive performance of the resulting CNSs. The optimization of x led to the formation of N-CNS-2 with a significantly larger specific surface area (809 m 2 g −1, 98 % microporous content) and a high specific capacitance (732 F g −1) at 8 A g −1 in 6 M KOH aqueous electrolyte. In addition, the electrode fabricated with N-CNS-2 showed excellent cycling stability along with 98 % of the initial specific capacitance after 5000 charge/discharge cycles. The carbon precursor with the aminal linkage network has shown very promising potential in energy storage materials.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | activation,aminal bonding,nanosphere,porous carbon,supercapacitors,catalysis,electrochemistry ,/dk/atira/pure/subjectarea/asjc/1500/1503 |
| Faculty \ School: | Faculty of Science > School of Chemistry (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Groups > Chemistry of Materials and Catalysis Faculty of Science > Research Groups > Energy Materials Laboratory |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 16 Sep 2020 23:57 |
| Last Modified: | 18 Oct 2024 23:54 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/76903 |
| DOI: | 10.1002/celc.202001165 |
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