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Nickel Acetate-Assisted Graphitization of Porous Activated Carbon at Low Temperature for Supercapacitors With High Performances

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Title: Nickel Acetate-Assisted Graphitization of Porous Activated Carbon at Low Temperature for Supercapacitors With High Performances
Authors: Xiaohui Zhang, Zhian Qiu, Qingyu Li, Libo Liang, Xiaofei Yang, Shaorong Lu, Dinghan Xiang, Feiyan Lai
Source: Frontiers in Chemistry, Vol 10 (2022)
Publisher Information: Frontiers Media S.A., 2022.
Publication Year: 2022
Collection: LCC:Chemistry
Subject Terms: supercapacitors, activated carbons, catalytic graphitization, pore-forming agent, biomass, Chemistry, QD1-999
More Details: Catalytic graphitization opens a route to prepare graphitic carbon under fairly mild conditions. Biomass has been identified as a potentially attractive precursor for graphitic carbon materials. In this work, corn starch was used as carbon source to prepare hollow graphitic carbon microspheres by pyrolysis after mixing impregnation with nitrate salts, and the surface of these carbon microspheres is covered with controllable pores structure. Under optimal synthesis conditions, the prepared carbon microspheres show a uniform pore size distribution and high degree of graphitization. When tested as electrode materials for supercapacitor with organic electrolyte, the electrode exhibited a superior specific capacitance of 144.8 F g−1 at a current density of 0.1 A g−1, as well as large power density and a capacitance retention rate of 93.5% after 1,000 cycles in galvanostatic charge/discharge test at 1.0 A g−1. The synthesis extends use of the renewable nature resources and sheds light on developing new routes to design graphitic carbon microspheres.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2296-2646
Relation: https://www.frontiersin.org/articles/10.3389/fchem.2022.828381/full; https://doaj.org/toc/2296-2646
DOI: 10.3389/fchem.2022.828381
Access URL: https://doaj.org/article/f42c15ec668742c39145e92b61792c17
Accession Number: edsdoj.f42c15ec668742c39145e92b61792c17
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  Data: Nickel Acetate-Assisted Graphitization of Porous Activated Carbon at Low Temperature for Supercapacitors With High Performances
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  Data: <searchLink fieldCode="AR" term="%22Xiaohui+Zhang%22">Xiaohui Zhang</searchLink><br /><searchLink fieldCode="AR" term="%22Zhian+Qiu%22">Zhian Qiu</searchLink><br /><searchLink fieldCode="AR" term="%22Qingyu+Li%22">Qingyu Li</searchLink><br /><searchLink fieldCode="AR" term="%22Libo+Liang%22">Libo Liang</searchLink><br /><searchLink fieldCode="AR" term="%22Xiaofei+Yang%22">Xiaofei Yang</searchLink><br /><searchLink fieldCode="AR" term="%22Shaorong+Lu%22">Shaorong Lu</searchLink><br /><searchLink fieldCode="AR" term="%22Dinghan+Xiang%22">Dinghan Xiang</searchLink><br /><searchLink fieldCode="AR" term="%22Feiyan+Lai%22">Feiyan Lai</searchLink>
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  Data: Catalytic graphitization opens a route to prepare graphitic carbon under fairly mild conditions. Biomass has been identified as a potentially attractive precursor for graphitic carbon materials. In this work, corn starch was used as carbon source to prepare hollow graphitic carbon microspheres by pyrolysis after mixing impregnation with nitrate salts, and the surface of these carbon microspheres is covered with controllable pores structure. Under optimal synthesis conditions, the prepared carbon microspheres show a uniform pore size distribution and high degree of graphitization. When tested as electrode materials for supercapacitor with organic electrolyte, the electrode exhibited a superior specific capacitance of 144.8 F g−1 at a current density of 0.1 A g−1, as well as large power density and a capacitance retention rate of 93.5% after 1,000 cycles in galvanostatic charge/discharge test at 1.0 A g−1. The synthesis extends use of the renewable nature resources and sheds light on developing new routes to design graphitic carbon microspheres.
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        Value: 10.3389/fchem.2022.828381
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      – Text: English
    Subjects:
      – SubjectFull: supercapacitors
        Type: general
      – SubjectFull: activated carbons
        Type: general
      – SubjectFull: catalytic graphitization
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      – SubjectFull: pore-forming agent
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      – SubjectFull: biomass
        Type: general
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      – TitleFull: Nickel Acetate-Assisted Graphitization of Porous Activated Carbon at Low Temperature for Supercapacitors With High Performances
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            NameFull: Xiaohui Zhang
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