Journal
RSC ADVANCES
Volume 9, Issue 17, Pages 9577-9583Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra01488h
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Funding
- National Natural Science Foundation of China [51672114]
- Natural Science Foundation of Jiangsu Province, China [BK20161357, BK20151328]
- Foundation from Marine Equipment and Technology Institute for Jiangsu University of Science and Technology, China [HZ20180004]
- High-tech Ship Research Project of the Ministry of Industry and Information Technology, China [[2017] 614]
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The C@GQD composite was prepared by the combination of metal-organic framework (ZIF-8)-derived porous carbon and graphene quantum dots (GQDs) by a simple method. The resulting composite has a high specific surface area of 668 m(2) g(-1) and involves numerous micro- and mesopores. As a supercapacitor electrode, the material showed an excellent double-layer capacitance and a high capacity retention of 130 F g(-1) at 2 A g(-1). The excellent long-term stability was observed even after approximate to 10000 charge-discharge cycles. Moreover, the composite as an anode material for a lithium-ion battery exhibited a good reversible capacity and outstanding cycle stability (493 mA h g(-1) at 100 mA g(-1) after 200 cycles). The synergistic effect of a MOF-derived porous carbon and GQDs was responsible for the improvement of electrochemical properties.
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