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Tridimensional few-layer graphene-like structures from sugar-salt mixtures as high-performance supercapacitor electrodes
Authors
Ba H.
Giambastiani G.
+6 more
Nguyen-Dinh L.
Pham-Huu C.
Pronkin S.
Tuci G.
Wang W.
Weinberg C.
Publication date
1 January 2018
Publisher
Abstract
© 2018 Elsevier Ltd This work describes a straightforward approach to the production of highly-performing and cost-effective C-based materials for energy storage application while proposing an original and effective method to the control of the final material morphology. Indeed, robust few-layer graphene-like and highly open-cell structures have been prepared by a modified chemical activation procedure starting from costless sugar/salt mixtures. The as-prepared C-samples ensure high ion-accessible surface area and low ion transport resistance, two key features for the fabrication of effective electrochemical double layer supercapacitors. A selected sample from this series exhibits high specific capacitance (Cg) (312 and 234 F g−1 at 0.5 and 50 A g−1, respectively, in 0.5 M H2SO4), particularly at high current density values, along with excellent cycling stability and Cg retention for increasing charge–discharge rates
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Last time updated on 07/05/2019