High-performance supercapacitors based on hierarchically porous carbons with a three-dimensional conductive network structure

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dc.contributor.authorZou, Jizhao
dc.contributor.authorTu, Wenxuan
dc.contributor.authorZeng, Shao-Zhong
dc.contributor.authorYao, Yuechao
dc.contributor.authorZhang, Qi
dc.contributor.authorWu, Hongliang
dc.contributor.authorLan, Tongbin
dc.contributor.authorLiua, Shiyu
dc.contributor.authorZeng, Xierong
dc.date.accessioned2020-01-22T12:20:23Z
dc.date.available2020-01-22T12:20:23Z
dc.date.issued2019-03-27
dc.description.abstractClews of polymer nanobelts (CsPNBs) have the advantages of inexpensive raw materials, simple synthesis and large output. Novel clews of carbon nanobelts (CsCNBs) have been successfully prepared by carbonizing CsPNBs and by KOH activation subsequently. From the optimized process, CsCNBs*4, with a specific surface area of 2291 m2 g−1 and a pore volume of up to 1.29 cm3 g−1, has been obtained. Fundamentally, the CsCNBs possess a three-dimensional conductive network structure, a hierarchically porous framework, and excellent hydrophilicity, which enable fast ion diffusion through channels and a large enough ion adsorption/desorption surface to improve electrochemical performance of supercapacitors. The product exhibits a high specific capacitance of 327.5 F g−1 at a current density of 0.5 A g−1 in a three-electrode system. The results also reveal a high-rate capacitance (72.2% capacitance retention at 500 mV s−1) and stable cycling lifetime (95% of initial capacitance after 15 000 cycles). Moreover, CsCNBs*4 provides a high energy density of 29.8 W h kg−1 at a power density of 345.4 W kg−1 in 1 M tetraethylammonium tetrafluoroborate/acetonitrile (TEABF4/AN) electrolyte. These inspiring results imply that this carbon material with a three-dimensional conductive network structure possesses excellent potential for energy storage.en_UK
dc.identifier.citationZou J, Tu W, Zeng S-Z, et al., (2019) High-performance supercapacitors based on hierarchically porous carbons with a three-dimensional conductive network structure. Dalton Transactions, Volume 48, Issue 16, April 2019, pp. 5271-5284en_UK
dc.identifier.issn1477-9226
dc.identifier.urihttps://doi.org/10.1039/C9DT00261H
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14988
dc.language.isoenen_UK
dc.publisherRoyal Society of Chemistryen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.titleHigh-performance supercapacitors based on hierarchically porous carbons with a three-dimensional conductive network structureen_UK
dc.typeArticleen_UK

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