LAUSR

CoS nanoplates and nanoparticles films were successfully grown on carbon fibers (CF) via one-step process and used in fiber-shaped dye sensitized solar cells as counter electrodes. The electrocatalytic ability of CF accompanied with CoS nanoplates electrode was comparable with the expensive Pt wire, and obviously superior to the CF covered by CoS nanoparticles film. The results were believed to originate from: (1) the enough void space among CoS nanoplates allows easier redox ion diffusion; (2) the two-dimensional nanoplates favor the longer distance electron transport with less diffusive hindrance than the randomly depositing nanoparticles film, where the electrons have to cross many tiny particle boundaries that can trap electrons.