Microstructure Effect of Carbon Nanofibers on Oxygen Reduction Properties of Cathode

Abstract:

Microstructures controllable carbon nanofibers (CNFs),i.e.platelet CNFs (pCNFs),fishbone CNFs (fCNFs) and tube CNFs (tCNFs),were synthesized and the microstructure effect on oxygen reduction reaction (ORR) performance was investigated.The physicochemical and electrochemical properties of the CNFs and Pt/CNFs were characterized by high resolution transmission electron microscope (HRTEM),Xray diffraction (XRD) and cyclic voltammetry.Platinum electrocatalysts supported on CNFs and activated carbons were synthesized,too.Pt/p-CNFs exhibits more positive ORR onset reduction potential than the electrocatalyst supported on other CNFs and activated carbon.

Key words:carbon nanofibers; microstructure; electrocatalyst; oxygen reduction reaction