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- W2550865084 abstract "There is much recent interest in graphene-based composite electrode materials because of their excellent mechanical strengths, high electron mobilities, and large specific surface areas. These materials are good candidates for applications in supercapacitors. In this work, a new graphene-based electrode material for supercapacitors was fabricated by anchoring carbon dots (CDs) on reduced graphene oxide (rGO). The capacitive properties of electrodes in aqueous electrolytes were systematically studied by galvanostatic charge-discharge measurements, cyclic voltammetry, and electrochemical impedance spectroscopy. The capacitance of rGO was improved when an appropriate amount of CDs were added to the material. The CD/rGO electrode exhibited a good reversibility, excellent rate capability, fast charge transfer, and high specific capacitance in 1 M H2SO4. Its capacitance was as high as 211.9 F/g at a current density of 0.5 A/g. This capacitance was 74.3% higher than that of a pristine rGO electrode (121.6 F/g), and the capacitance of the CD/rGO electrode retained 92.8% of its original value after 1000 cycles at a CDs-to-rGO ratio of 5:1." @default.
- W2550865084 created "2016-11-30" @default.
- W2550865084 creator A5004173592 @default.
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- W2550865084 date "2016-11-14" @default.
- W2550865084 modified "2023-10-13" @default.
- W2550865084 title "Electrochemical and Capacitive Properties of Carbon Dots/Reduced Graphene Oxide Supercapacitors" @default.
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- W2550865084 doi "https://doi.org/10.3390/nano6110212" @default.
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