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A novel synthesis of carbon foam@Fe2O3 via hydrolysis-driven emulsion polymerization for supercapacitor electrodes

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(7), pp.2327-2334
  • DOI : 10.1007/s42823-023-00566-4
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : March 15, 2023
  • Accepted : June 20, 2023
  • Published : December 1, 2023

Wu Congxu 1 Xiong Wei 1 Li Hao 2

1Wuhan Institute of Technology
2Tohoku University

Accredited

ABSTRACT

Hierarchically porous carbon foam composites with highly dispersed Fe2O3 nanoparticles confined in the foam pores, facilely fabricated by hydrolysis-driven emulsion polymerization strategy. The as-generated acidic conditions of Fe3+ hydrolysis could catalyze the polymerization of phenolic resin, and the carbon-based composite materials containing iron oxides were obtained in situ. The structural characterization results show that HCF@Fe2O3 NPs-2 electrode has the largest specific surface area (549 m2/g) and pore volume (0.46 cm3/g). Electrochemical results indicates that typical HCF@Fe2O3 NPs-2 electrode displays good capacitive properties. including high specific capacitance (225 F/g at 0.2 A/g current density). Excellent magnification performance (capacity retention rate 80% as current density increases from 0.2 to 10 A/g). At the same time, HCF@SnO2 NPs was successfully synthesized by replacing hydrolyzed tin tetrachloride with ferric chloride. This study provides a new idea for the preparation of metal oxide–carbon matrix composites, and also highlights the potential of such carbon foams in application of energy storage.

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