Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2017-11-10

Journal: ELECTROCHIMICA ACTA

Included Journals: EI、SCIE、Scopus

Volume: 254

Page Number: 148-154

ISSN: 0013-4686

Key Words: Electrocatalyst; Oxygen Reduction Reaction; Porous carbons; Heteroatom doping; Metal Organic Frameworks

Abstract: Heteroatom doped porous carbons have been regarded as one of most promising candidates for Pt-free oxygen reduction reaction (ORR) catalysts. The proper heteroatom bonding configuration and synergistic effect of multiple atom co-doping are very important for improving their catalytic activity. In this work, a series of N, S co-doped porous carbons (NSCs) with excellent ORR performance were prepared by rationally using a dual-ligand metal organic framework as a carbon precursor. The interconnected porous structure, high surface area, N, S co-doping and high graphitization-N dopant, significantly contribute to the enhanced catalytic performance of ORR. The electrocatalyst studies indicated that the obtained materials have comparable ORR activity to that of the commercial Pt/C in both alkaline and acidic media, and superior long-term durability than that of Pt/C. This work can provide some guidance for synthesizing other multiple atom co-doping carbons for energy storage and conversion applications through target oriented synthesis of metal organic frameworks with different ligands. (C) 2017 Elsevier Ltd. All rights reserved.