Highly Conductive Hierarchical C/C Composites to Eliminate Conductive Agent in EDLC Electrodes

Abstract

Invited for this month's cover picture is the group of Professor Mingming Chen at Tianjin University (China) and Professor Masahiro Toyoda at Oita University (Japan). The cover picture shows a typical frame-filling C/C composite, in which graphene guarantees rapid electron conduction and fast ion transmission, and numerous nanoporous carbons derived from amphiphilic carbonaceous materials (ACM) provide sufficient micropores to accumulate electric double layers for energy storage. Nowadays, although carbon black (CB) has no contribution to specific capacitance, it is still indispensable when fabricating an EDLC electrode to guarantee a satisfactory power output of whole EDLCs. Therefore, there arises an appeal for conductive EDLC electrode materials. In our work, aiming at a CB-free EDLC electrode, we constructed a series of porous frame-filling type C/C composites that have both ample specific surface area (SSA) and adequate electrical conductivity (e-conductivity). Read the full text of the Article at 10.1002/celc.201700650.