Electrocatalytic performance of cubic NiS2 and hexagonal NiS for oxygen reduction reaction

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

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Author(s)

  • Taizhong Huang
  • Hengyi Fang
  • Luping Xu
  • Ying Xin
  • Jiemei Yu
  • Shuo Yao
  • Zhaoliang Zhang

Detail(s)

Original languageEnglish
Pages (from-to)223-232
Journal / PublicationJournal of Catalysis
Volume359
Online published3 Feb 2018
Publication statusPublished - Mar 2018

Abstract

Developing high performance and low cost non-precious metal based catalysts for oxygen reduction reaction (ORR) is essential for a wide range of industrial applications of fuel cells. Here, we report the catalytic performance of a novel cubic NiS2 and hexagonal NiS catalysts for ORR. Both the NiS2 and NiS are synthesized by facile one-pot hydrothermal method and exhibit a high level of purity. Compared to conventional Pt/C catalysts, the NiS2 catalyst yields a higher peak current intensity and enhanced long time running stability despite the half wave potential is 40 mV lower than that of Pt/C catalyst. Rotating disc electrode tests show that the NiS2 catalyzes ORR mainly happening through 4-electron pathway. Thus, the NiS catalyzes ORR happening through 2-electron pathway. We envision that the NiS2 catalyst has great potential to be alternate for the Pt/C catalyst for ORR in alkaline fuel cells.

Research Area(s)

  • Catalyst, Electrocatalysis, Electron transfer number, NiS2, Oxygen reduction reaction

Citation Format(s)

Electrocatalytic performance of cubic NiS2 and hexagonal NiS for oxygen reduction reaction. / Huang, Taizhong; Fang, Hengyi; Xu, Luping; Wang, Zuankai; Xin, Ying; Yu, Jiemei; Yao, Shuo; Zhang, Zhaoliang.

In: Journal of Catalysis, Vol. 359, 03.2018, p. 223-232.

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