▎ 摘　　要

Stacked graphene platelet nanofibers (SGNF) dispersed in the electrolyte of dye-sensitized solar cells (DSSCs) can efficiently improve the charge transport and catalytic reactions of the Co(III)/(II) redox couple so that the quinoxaline dye AQ308-based DSSC containing 0.2 mg mL(-1) SGNF exhibits the best power conversion efficiency (PCE) of 9.81%.