High-performance organic electrolyte supercapacitors based on intrinsically powdery carbon aerogels |
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Authors: | Xidong Lin He Lou Wenrui Lu Fei Xu Ruowen Fu Dingcai Wu |
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Institution: | a Materials Science Institute, PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China;
b Center for Nano Energy Materials, State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU), Xi'an 710072, China |
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Abstract: | A novel class of powdery carbon aerogels (PCAs) has been developed by the union of microemulsion polymerization and hypercrosslinking, followed by carbonization. The resulting aerogels are in a microscale powdery form, demonstrate a well-defined 3D interconnected nanonetwork with hierarchical pores derived from numerous interstitial nanopores and intraparticle micropores, and exhibit high surface area (up to 1969 m2/g). Benefiting from these structural features, PCAs show impressive capacitive performances when utilized as electrodes for organic electrolyte supercapacitors, including large capacitances of up to 152 F/g, high energy densities of 37-15 Wh/kg at power densities of 34–6750 W/kg, and robust cycling stability. |
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Keywords: | Powdery carbon aerogel High surface area Hierarchical pore Organic electrolyte Supercapacitor |
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