Study on Nitrogen-Doped Carbon Nanotubes for Vanadium Redox Flow Battery Application

摘要

Nitrogen doped carbon nanotubes(N-CNTs) have been synthesized on carbon felt (N-CNT/CF) withchemical vapor deposition method by utilizing decomposition of melamine in the presence offerrocene. The as-prepared N-CNT/CF composite was investigated as positive electrodes for vanadiumredox flow batteries(VRBs). The microporous nanotube networks consisting of N-CNTs with highersurface area can increase the electrochemical reactive area, which means that N-CNT/CF can generate2+ +more active sites for VO /VO2 redox couple. The charge-discharge test of the full battery with N- CNT/CF as positive electrode showed that the N-CNT/CF electrode gave better battery performance interms of rate capability and polarization.