Journal
JOURNAL OF MATERIALS SCIENCE
Volume 53, Issue 3, Pages 2137-2148Publisher
SPRINGER
DOI: 10.1007/s10853-017-1664-7
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Funding
- Shanghai Leading Academic Discipline Project [J51503]
- National Natural Science Foundation of China [2097610551641208, 21606151]
- Shanghai excellent technical leaders [17XD1424900]
- Shanghai Association for Science and Technology Achievements Transformation Alliance Program [LM201559]
- Shanghai Municipal Education Commission boosting project [15cxy39]
- Science and Technology Commission of Shanghai Municipality Project [14520503200]
- Shanghai Municipal Education Commission (Plateau Discipline Construction Program)
- Shanghai Talent Development Funding [201335]
- laboratory technique project-Chemical Engineering Simulation Training Center [3921NH163004007]
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Nitrogen-containing porous carbons with numerous micropores were fabricated by pyrolysing polyvinylidene fluoride (PVDF) membrane following potassium hydroxide (KOH) activation at 600-900 A degrees C for 2 h under N-2 atmosphere. The fabricated nitrogen-containing porous carbons have a large specific surface area of approximately 2289 m(2) g(-1), a certain nitrogen content of 1.35 at.% and a favourable hierarchical porous structure possessing a great number of micropores and a part of mesopores. The carbon materials exhibit high specific capacitance of 338 F g(-1) at 0.5 A g(-1) in a 6 M KOH and outstanding cycling property of 91.6% maintenance at 2 A g(-1) after 10000 cycles. An all-solid-state symmetrical supercapacitor with these as-prepared materials as electrodes can deliver energy densities of 21.9 to 10.4 W h kg(-1) at power densities from 700.8 to 12910.3 W kg(-1). To sum up, the as-obtained porous carbon is a type of potential electrode material for electrical double-layer capacitor.
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