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

Taizhong Huang, Hengyi Fang, Luping Xu, Zuankai Wang, Ying Xin, Jiemei Yu, Shuo Yao, Zhaoliang Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

45 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)223-232
Number of pages10
JournalJournal of Catalysis
Volume359
DOIs
Publication statusPublished - Mar 2018
Externally publishedYes

Keywords

  • Catalyst
  • Electrocatalysis
  • Electron transfer number
  • NiS
  • Oxygen reduction reaction

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Fingerprint

Dive into the research topics of 'Electrocatalytic performance of cubic NiS2 and hexagonal NiS for oxygen reduction reaction'. Together they form a unique fingerprint.

Cite this