Band gap-Tunable Porous Borocarbonitride Nanosheets for High Energy-Density Supercapacitors
| Autor: | Fukun Ma, Yongzhong Wu, Shouzhi Wang, Xiaopeng Hao, Yongliang Shao, Hehe Jiang |
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| Rok vydání: | 2018 |
| Předmět: |
Supercapacitor
Materials science business.industry Band gap Annealing (metallurgy) 02 engineering and technology Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Energy storage 0104 chemical sciences Specific surface area Electrode Optoelectronics General Materials Science 0210 nano-technology business |
| Zdroj: | ACS Applied Materials & Interfaces. 10:19588-19597 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b02317 |
| Popis: | Band gap-tunable porous borocarbonitride (BCN) nanosheets were successfully fabricated with cheap and readily available precursors by annealing and exfoliating. The band gap of the as-prepared BCN materials ranges from 5.5 to 1.0 eV; these samples exhibit beneficial structural features suitable for the application in supercapacitors. Especially, the BCN material with a band gap of 1.0 eV exhibits a great specific surface area (600.9 m2 g–1), massive active sites, and excellent conductivity (10.8 S m–1). In addition, this example displays great specific capacitance (464.5 F g–1), excellent cycle stability (98.5% performance retention after 10 000 cycles), and ultrahigh energy density (50.4 W h kg–1, in 1 M Et4NBF4 electrolyte). This excellent electrochemical performance and facile effective synthesis of band gap-tunable BCN materials will provide a promising strategy for configuring nanostructured multiple compound electrodes for other energy storage and conversion devices. |
| Databáze: | OpenAIRE |
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