Fenton Reaction Doubled Biomass Carbon Activation Efficiency for High‐Performance Supercapacitors

Abstract The huge consumption of alkali during biomass‐derived porous carbon production leads to pollution and high carbon‐emission. This study employs the concept of Fenton chemistry to achieve hierarchical porous biomass carbon materials with a remarkably high specific surface area of 3440 m 2 g −1 with double activation efficiency compared to traditional activation process. The optimized carbon electrode demonstrates exceptional specific capacitance of 425.2 F g −1 at a current density of 0.1 A g −1 and great rate performance (286.1 F g −1 at 100 A g −1 ) in 6 m KOH electrolyte. The enabled supercapacitor demonstrates remarkable cycling stability, retaining up to 99.74% of its initial capacitance after…

• KT
  Key Technologies Research and Development Program

  Award: 2021YFB3800300