Metal-chelating-membrane-derived TM/TMOx nitrogen-doped carbon fibers as efficient oxygen reduction electrocatalysts†
Abstract
A metal-chelating membrane was exploited for the facile synthesis of N-doped graphitic carbon fibers (N-CFs) with abundant TM/TMOx nanoparticles completely exposed on the surfaces of the fibers. The ready accessiblity to multiple active sites and strong synergistic effects endowed the Fe/Fe3O4@N-CFs with optimal qualities, in particular delivering enhanced ORR performance in alkaline and neutral medium.