Graphene aerogel derived by purification-free graphite oxide for high performance supercapacitor electrodes

“…Good wettability is benecial for the dispersion of the catalyst in water, thereby promoting the progress of the reaction. 59 The detailed high-resolution XPS analysis of C, N, O and P in NPCH were also recorded as shown in Fig. 5.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Catalytic oxidative dehydrogenation of N-heterocycles with nitrogen/phosphorus co-doped porous carbon materials

Sun

Shan

et al. 2022

Chem. Sci.

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“…Various carbon-based materials derived from coal, semi-coke, coal-tar pitch, biomass have been extensively investigated as electrodes for electric double-layer capacitor due to their abundance, easy processing, chemical/thermal stability and environmentally benign [1][2][3][4][5][6][7][8][9][10] . Yet, the most attractive property of carbon-based materials is their versatility of micro-structure and surface chemistry [11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Structure evolution of oxygen removal from porous carbon for optimizing supercapacitor performance

Yuan

Huang

Wang

et al. 2020

Journal of Energy Chemistry

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“…This structure allows the ions to enter the inner surface with a lower hindrance and shorter traveling distance, and meanwhile more surface area can be utilized to facilitate larger specific capacitance and rate capability. 24 In this sense, the mesoporous texture of TGA-2 is more suitable for IL-based supercapacitors.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Thiosalicylic Acid Modified Graphene Aerogel as Efficient Electrode Material for Ionic Liquid Electrolyte-Based Supercapacitors

Chen

et al. 2022

J. Phys. Chem. C

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Balancing energy density and power density of supercapacitors is highly desired to extend their application range. The development of new electrode materials with efficient electron/ion migration channels and large surface area accessible by the ionic liquid (IL) electrolyte with high stable potential window is a critical way to construct the high-performances of supercapacitors. In this work, a thiosalicylic acid modified graphene aerogel (TGA) was prepared by hydrothermal treatment of a graphene oxide precursor using thiosalicylic acid (TSA) as reductant, sulfur-dopant, and modifier. As-prepared TGA material has hierarchically porous texture with wide pore size distribution range and large accessible surface area by IL electrolytes, which is beneficial to the rapid diffusion and adsorption of IL electrolyte ions with larger ion sizes and high viscosity. Therefore, the TGA material possesses high specific capacitance and rate capability. Using 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([Bmim][Tf 2 N]) IL electrolyte, the assembled symmetric TGA-based supercapacitor can deliver energy densities of 115−28 Wh kg −1 within power densities of 946−11586 W kg −1 . The current work provides a feasible avenue to accomplish the balance between energy density and power density of supercapacitors via the design and synthesis of hierarchically porous graphene aerogels containing doped-heteroatoms and matching with IL electrolyte.

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Graphene aerogel derived by purification-free graphite oxide for high performance supercapacitor electrodes

Cited by 51 publications

References 57 publications

Catalytic oxidative dehydrogenation of N-heterocycles with nitrogen/phosphorus co-doped porous carbon materials

Catalytic oxidative dehydrogenation of N-heterocycles with nitrogen/phosphorus co-doped porous carbon materials

Structure evolution of oxygen removal from porous carbon for optimizing supercapacitor performance

Thiosalicylic Acid Modified Graphene Aerogel as Efficient Electrode Material for Ionic Liquid Electrolyte-Based Supercapacitors

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