Surface-Modified Porous Carbon Nitride Composites as Highly Efficient Electrocatalyst for Zn-Air Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Wenhan Niu
  • Zhao Li
  • Kyle Marcus
  • Le Zhou
  • Yilun Li
  • Kun Liang
  • Yang Yang

Detail(s)

Original languageEnglish
Article number1701642
Journal / PublicationAdvanced Energy Materials
Volume8
Issue number1
Early online date14 Sep 2017
Publication statusPublished - 5 Jan 2018
Externally publishedYes

Abstract

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.

Research Area(s)

  • carbon nitride, oxygen evolution reaction, oxygen reduction reaction, porous materials, Zn-air batteries

Citation Format(s)

Surface-Modified Porous Carbon Nitride Composites as Highly Efficient Electrocatalyst for Zn-Air Batteries. / Niu, Wenhan; Li, Zhao; Marcus, Kyle; Zhou, Le; Li, Yilun; Ye, Ruquan; Liang, Kun; Yang, Yang.

In: Advanced Energy Materials, Vol. 8, No. 1, 1701642, 05.01.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review