Highly microporous carbon with nitrogen-doping derived from natural biowaste for high-performance flexible solid-state supercapacitor.
J Colloid Interface Sci
; 548: 322-332, 2019 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-31028996
Highly microporous carbon material with nitrogen doping has been synthesized via a facile one-step approach by employing natural biowaste miscellaneous wood fibers derived hydrochar as precursor and melamine as nitrogen source respectively. The added melamine not only results in the incorporation of some nitrogen into the carbon framework but also increases the specific surface area of carbon material. Such resultant N-doped microporous carbon possesses the functionalized nitrogen doping (1.75 at. %), a large specific surface area (â¼1807â¯m2â¯g-1) and abundant highly interconnected micropores. Benefiting from the synergistic effect of high specific surface area, well-developed pore size distribution and functionalized groups, this carbon material delivers a high specific capacitance of 345â¯Fâ¯g-1 at 0.5â¯Aâ¯g-1, an excellent capacitance retention with 270â¯Fâ¯g-1 at up to 30â¯Aâ¯g-1, and a remarkable cycle ability with 91.3% retention after 10,000 cycles at 5.0â¯Aâ¯g-1. Based on it, the as-developed flexible symmetric solid-state supercapacitor delivers a high energy density of 7.92â¯Wâ¯hâ¯kg-1 at the power density of 250â¯Wâ¯kg-1. Evidently, this work provides a facile and cost-effective route for functionalized natural biowaste-based carbon materials and further opens up a way for highly value-added recycling of biowaste-like materials.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Produtos Biológicos
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Carbono
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Maleabilidade
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Capacitância Elétrica
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Nitrogênio
Idioma:
En
Revista:
J Colloid Interface Sci
Ano de publicação:
2019
Tipo de documento:
Article
País de publicação:
Estados Unidos