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Co2+-coordination-assisted enhancement of mechanical and iodynamic properties of 3D graphene-based double network hydrogels for all-solid-state supercapacitors

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(3), pp.897-906
  • DOI : 10.1007/s42823-023-00590-4
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : April 24, 2023
  • Accepted : August 23, 2023
  • Published : April 11, 2024

He Binhong 1 Wen Shuntao 2 Wen Zhiming 2 Liang Yan 2 Yang Qianxi 2 Zhou Minjie 2 Wang Wei 1 Wang Guo-Xiang 2

1Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, School of Chemistry and Chemical Engineering
2Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials, Hunan Institute of Science and Technology

Accredited

ABSTRACT

This paper reports an enhanced strategy for improving the mechanical flexibility and ionic kinetic properties of a double network hydrogel based on Co2+-coordination assistance. The modified double-network hydrogel was obtained by using acrylic acid and N, N-dimethylacrylamide as monomers, adding cross-linking agents and 3D nitrogen-doped graphenes. The tensile fracture rate of the modified hydrogel was 1925% and its tensile strength was 1696 kPa. In addition, the hydrogel exhibited excellent ionic dynamics, and its application to an all-solid-state supercapacitor was able to achieve a specific capacitance of up to 182.8 F g−1. The supercapacitor exhibited an energy density of 34.2 Wh kg−1, even when operating at a power density of 5 kW kg−1, highlighting its significant potential for practical applications.

Citation status

Scopus Citation Counts (1) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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