Journal
APPLIED SURFACE SCIENCE
Volume 517, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.146140
Keywords
Chitin; N-acetylglucosamine; N-doped carbon; Hydroxyapatite; Supercapacitor
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Funding
- National Natural Science Foundation of China [21603054, 21773053]
- Natural Science Foundation of Hebei Province [B2017201084]
- Technology foundation for High-level talents of Hebei Province [CL201601]
- One Hundred Talent Project of Hebei Province
- Advanced Talents Incubation Program of Hebei University [801260201019]
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The monomer of sustainable chitin, N-acetylglucosamine (NAG), is fabricated into a kind of N-doped carbon material (NC-HAP-700), with the template of hydroxyapatite (HAP). NC-HAP-700 exhibits excellent electrochemical capacitance of 346 F/g at the current density of 0.5 A/g and capacitance retention of 92% after 5000 times of charge-discharge cycles, which is superior to most reported functional carbon materials. Experiments and characterizations suggest that HAP is an ideal template to improve the surface area, create microporous structure and carbonyl groups for final carbon product. High percentage of pyridinic N, pyrrolic N and oxygencontaining groups are main contributions to the pseudo capacitance of NC-HAP-700. More important, the supercapacitors exhibit practical application in which solar energy can be stored and release to light up red LED.
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