High-performance dye-sensitized solar cells using edge-halogenated graphene nanoplatelets as counter electrodes

Edge-selectively halogenated graphene nanoplatelets (XGnPs) as counter electrodes (CEs) in DSSCs display superior electrocatalytic performance toward Co(bpy)33+ reduction reaction to platinum (Pt) CE. The remarkably enhanced electrocatalytic performance is stemmed from low charge-transfer resistance at the interface of XGnP/electrolyte CEs.237