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发布时间：2019-03-11
论文类型：期刊论文
发表时间：2017-11-10
发表刊物：ELECTROCHIMICA ACTA
收录刊物：EI、SCIE、Scopus
卷号：254
页面范围：148-154
ISSN号：0013-4686
关键字：Electrocatalyst; Oxygen Reduction Reaction; Porous carbons; Heteroatom doping; Metal Organic Frameworks
摘要：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.