Trace phenol-formaldehyde resin activation mechanism of intermediate graphitic layer removal in carbon for enhanced Li-ion capacitor performance.

ABSTRACT: Precise modulation of the pore structure in activated carbon can further enhance the capacitance performance of supercapacitors. As a carbonaceous precursor, phenol-formaldehyde resin (PR) plays a dual role in both carbon deposition and activation for pore regulation; however, the activation mechanism governing its pore-tuning effect remains unclear. In this study, trace PR with a mass ratio of 0.2%-0.8% was mixed with activated carbon for heat treatment. The results revealed that trace amounts of PR exhibit an activation mechanism by selectively removing intermediate graphene layers. Specifically, the removal of one-three graphene layers resulted in the formation of periodic micropores with diameters of 0.50-0.56 nm, 0.81-0.90 nm, and 1.14-1.19 nm. Correlation analysis demonstrated that t

SUBMITTER: Xia Y 

PROVIDER: S-EPMC12498956 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature