Preparation of highly mesoporous activated carbons from vinylidene chloride copolymer and their electric double layer capacitance

摘要

We investigated the preparation of highly mesoporous and high surface area activated carbons with narrow pore size distribution using vinylidene chloride/methyl acrylate copolymers [Poly(VDC/MA)]. The preparation method is very simple, I.e., mixing of Poly(VDC/MA) with Y(acac)3 and carbonization followed by steam activation. The resulting activated carbons possess high BET specific surface area (2000 m2/g) and high mesopore surface area (1300 m2/g). We measured the electric double layer capacitance of the obtained mesoporous activated carbons in tetraalkylammonium tetrafluoroborate/propylene carbonate solution. The discharge capacitance of the mesoporous activated carbons was maintained at a high discharge current density.