Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 694, Issue -, Pages 636-642Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.10.013
Keywords
Fish gill; Porous activated carbon; Electrochemical performance; Supercapacitors
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Funding
- Key Project of Tianjin Natural Science Foundation of China [14JCZDJC32200]
- National Natural Science Foundation of China [51272176, 51502206, 51572194]
- LPMT
- CAEP [KF14006]
- Youth Foundation [52XQ1404]
- Academic Innovation Funding of Tianjin Normal University [52XC1404]
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Fish gill-derived porous activated carbon (FGAC) has been successfully prepared by simultaneous carbonization and activation. The FGAC composed of cross-linked thin carbon nanosheets reveals large specific surface area, wide-range hierarchical porous structure and appropriate contents of oxygen and nitrogen functional groups. As a supercapacitor electrode material, the FGAC shows high specific capacitance of 334 F g(-1) at 2 A g(-1) in 6 M KOH, good electrochemical stability and excellent rate capability (only 7% capacitance fading when the current density is increased by 20 times). These attractive electrochemical performances are ascribed to the multiple synergistic effects of the structure and chemistry of the FGAC, which can not only facilitate ion diffusion, transport and adsorption, but also increase surface area for charge accumulation. (C) 2016 Elsevier B.V. All rights reserved.
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