期刊
ADVANCED ENERGY MATERIALS
卷 8, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201701642
关键词
carbon nitride; oxygen evolution reaction; oxygen reduction reaction; porous materials; Zn-air batteries
类别
资金
- University of Central Florida [20080741]
Porous carbon nitride (PCN) composites are fabricated using a top-down strategy, followed by additions of graphene and CoSx nanoparticles. This subsequently enhances conductivity and catalytic activity of PCN (abbreviated as CoSx@PCN/rGO) and is achieved by one-step sulfuration of PCN/graphene oxides (GO) composite materials. As a result, the as-prepared CoSx@PCN/rGO catalysts display excellent activity and stability toward both oxygen evolution and reduction reactions, surpassing electrocatalytic performance shown by state-of-the-art Pt, RuO2 and other carbon nitrides. Remarkably, the CoSx@PCN/rGO bifunctional activity allows for applications in zinc-air batteries, which show better rechargeability than Pt/C. The enhanced catalytic performance of CoSx@PCN/rGO can primarily be attributed to the highly porous morphology and sufficiently exposed active sites that are favorable for electrocatalytic reactions.
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