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Article Dans Une Revue Journal of Materiomics Année : 2022

Facile and secure synthesis of porous partially fluorinated graphene employing weakly coordinating anion for enhanced high-performance symmetric supercapacitor

Ning Cao
  • Fonction : Auteur
Teng Wang
  • Fonction : Auteur
Yinghui Cai
  • Fonction : Auteur
Yijiang Qin
  • Fonction : Auteur
Fashun Li
  • Fonction : Auteur
Peng Liu
Qingguo Shao
  • Fonction : Auteur
Mingle Liu
  • Fonction : Auteur
Xiaobei Zang
  • Fonction : Auteur correspondant
  • PersonId : 1125555

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Résumé

In this paper, porous partially fluorinated graphene (PFG) for supercapacitors (SCs) was fabricated by a mild and secure one-pot hydrothermal method utilizing weakly coordinating anion BF4− as the fluorine source. The hydrolysis rate of sodium fluoroborate was adjusted by controlling the reaction temperature and PFG containing semi-ionic Csingle bondF bonds was obtained, where the content of semi-ionic Csingle bondF bonds in PFG can be easily regulated. The final experimental results show that the incorporation of fluorine not only modulates the electrochemical properties of the material, but also creates abundant pores. When assembled in a symmetric supercapacitor, the PFG shows a high specific capacitance of 269.7 F g−1 at 1 A g−1 and a superior rate capability with 89.3% capacitance retained, as the current density is increased from 1 A g−1 even to 20 A g−1. Furthermore, the resultant energy density for PFG is 9.4 Wh kg−1 at a power density of 250.0 W kg−1 (1 A g−1). All these results confirm that as-prepared partially fluorinated graphene is appropriate for the application in SCs and mass production.
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Origine : Publication financée par une institution

Dates et versions

hal-03561669 , version 1 (19-05-2022)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Citer

Ning Cao, Teng Wang, Rabah Boukherroub, Yinghui Cai, Yijiang Qin, et al.. Facile and secure synthesis of porous partially fluorinated graphene employing weakly coordinating anion for enhanced high-performance symmetric supercapacitor. Journal of Materiomics, 2022, 8 (1), pp.113-122. ⟨10.1016/j.jmat.2021.04.012⟩. ⟨hal-03561669⟩
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