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- W2806796434 abstract "Abstract Here, we present a facile and low-cost method to produce hierarchically porous graphene-based carbons from a biomass source. Three-dimensional (3D) graphene-based carbons were produced through continuous sequential steps such as the formation and transformation of glucose-based polymers into 3D foam-like structures and their subsequent carbonization to form the corresponding macroporous carbons with thin graphene-based carbon walls of macropores and intersectional carbon skeletons. Physical and chemical activation was then performed on this carbon to create micro- and meso-pores, thereby producing hierarchically porous biomass-derived graphene-based carbons with a high Brunauer-Emmett-Teller specific surface area of 3,657 m 2 g −1 . Owing to its exceptionally high surface area, interconnected hierarchical pore networks, and a high degree of graphitization, this carbon exhibited a high specific capacitance of 175 F g −1 in ionic liquid electrolyte. A supercapacitor constructed with this carbon yielded a maximum energy density of 74 Wh kg −1 and a maximum power density of 408 kW kg −1 , based on the total mass of electrodes, which is comparable to those of the state-of-the-art graphene-based carbons. This approach holds promise for the low-cost and readily scalable production of high performance electrode materials for supercapacitors." @default.
- W2806796434 created "2018-06-13" @default.
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- W2806796434 date "2018-01-30" @default.
- W2806796434 modified "2023-10-13" @default.
- W2806796434 title "Activated Biomass-derived Graphene-based Carbons for Supercapacitors with High Energy and Power Density" @default.
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- W2806796434 doi "https://doi.org/10.1038/s41598-018-20096-8" @default.
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