ZIF derived PtNiCo/NC cathode catalyst for proton exchange membrane fuel cell

Saadia Hanif, Xuan Shi, Naseem Iqbal, Tayyaba Noor, Rehan Anwar, Arunachala Mada Kannan

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

High performance cathode catalysts with minimum platinum amount for the electrocatalyzed oxygen reduction reaction (ORR) in PEMFCs remain as a significant challenge for commercial application. Zeolitic Imidazolate Framework (ZIF) based catalyst can provide void 3D framework of N-doped nano-porous carbon for promising ORR activity. Here we report a bimetallic pyrolyzed NiCo-ZIF supported fine Pt/Pt alloy electrocatalyst for ORR. After pyrolysis, nano-porous carbon is obtained with well dispersed Pt/Pt alloy nanoparticles (˜ 3 nm). This catalyst shows superior performance and stability in acidic medium against the commercial catalyst comprising of Pt/C. In a single cell PEMFC, high peak power density value of 1067 mW. cm−2 is attained at 70 °C by using low platinum amount of 0.12 mg cm-2 on cathode. The enhanced activity and durability is credited to the synergistic impact of N-doped nano-porous carbon originated from NiCo-ZIF and the defect rich carbon support to anchor Pt/Pt alloy nanoparticles.

Original languageEnglish (US)
Article number117947
JournalApplied Catalysis B: Environmental
DOIs
Publication statusPublished - Dec 5 2019

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Keywords

  • Electrocatalyst
  • ORR
  • PEMFC
  • PtNiCo/NC
  • ZIF-67

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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