Porous carbon-carbon composite electrodes for vanadium redox flow batteries synthesized by twin polymerization.

ABSTRACT: Highly porous carbon-carbon composite electrodes have been synthesized by surface twin polymerization on a macroporous polyacrylonitrile (PAN)-based substrate. For this purpose the compound 2,2'-spirobi[benzo-4H-1,3,2-dioxasiline] (Spiro), being a molecular precursor for phenolic resin and silica, was polymerized onto PAN-based felts with subsequent thermal transformation of the hybrid material-coated felt into silica-containing carbon. The following etching step led to high surface carbon-carbon composite materials, where each carbon component served a different function in the battery electrode: the carbon fiber substrate possesses a high electron conductivity, while the amorphous carbon coating provides the catalytic function. For characterization of the composite materials with

SUBMITTER: Schnucklake M 

PROVIDER: S-EPMC9057876 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature