Supercapacitive Performance of Mesoporous Carbon Materials Co-Templated by F127 and PDMS-PEO

Abstract

Ordered mesoporous carbons are synthesized by using the triblock copolymer F127 (EO106-PO70-EO106) and diblock copolymer PDMS-PEO (DMS32-EO20) as co-templates. KOH is utilized to improve the surface area and tailor the pore texture of the ordered mesoporous carbon. KOH activation significantly increases the surface area of mesoporous carbon due to the generation of micropores in mesopore walls. The obtained activated mesoporous carbons have high surface area (1592 m2 g-1) and large pore volume (0.79 cm3 g-1). The activated carbons also exhibit improved electrochemical behavior with a specific capacitance of 218.9 F g-1 at the current density of 1 A g-1, excellent rate performance and good cycling stability, revealing a promising application in supercapacitors.