HIGH ELECTROCATALYTIC ACTIVITY; METAL-FREE CATALYSTS; IRON PHTHALOCYANINE; FUNCTIONAL-GROUPS; CARBON NANOTUBES; EFFICIENT; COMPOSITE; DOTS; PERFORMANCE; STABILITY
ROYAL SOC CHEMISTRY
RSC ADVANCES, v. 7, no. 42, page. 26113-26119
Graphene quantum dots (GQDs) have gained great interest due to their chemical stabilities, unique catalytic activities, and feasible chemical functionalization opportunities; these have opened up new applications in the fields of chemical energy conversion and storage. Herein, we synthesized iron(II) phthalocyanine (FePC)-GQD conjugates as facile electrocatalysts for the enhanced oxygen reduction reaction (ORR), which is critical in energy conversion systems of fuel cells. This unique combination of materials (GQDFePC) exhibits a greatly enhanced onset potential via a four-electron pathway in an alkaline electrolyte. Moreover, the synthesized electrocatalyst shows distinguished tolerance toward methanol and carbon monoxide, which paves the way for its commercialization as an electrocatalyst.