Nickel-Cobalt Metal-Organic Framework CPO-27 and g-C3N4 for Oxygen Reduction Reaction in Alkaline-Exchange-Membrane Fuel Cell

Yusuf Pradesar, Afandi Yusuf, Daniel Manaye Kabtamu, Hsin Chih Huang*, Chen Hao Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This study synthesizes the nickel-cobalt supported by the metal-organic framework CPO-27 (coordination polymer of Oslo, Ni-Co-CPO-27) and g-C3N4, showing outstanding catalytic activity and stability for oxygen reduction reaction in alkaline media, notated by NiCo2-CPO-27/PCN-HT (PCN-HT: heat-treated polymeric carbon nitrite). The half-wave potential of NiCo2-CPO-27/PCN-HT is 0.82 V, and the electron transfer number is around 3.99, which is close to the activity of Pt/C. The stability test of NiCo2-CPO-27/PCN-HT demonstrates only 0.01 V decade of the half-wave potential after 30,000 cycles. The synergistic effects of Ni-Co metals, pyridinic-N species, and graphitic-N species contribute to the outstanding performance of NiCo2-CPO-27/PCN-HT. The anion exchange membrane fuel cell (AEMFC) using NiCo2-CPO-27/PCN-HT in the cathode shows excellent performance with a maximum power density of 224.4 mW cm-2, 20% higher than AEMFC using the Pt/C under the same condition.

Original languageEnglish
Pages (from-to)7847-7856
Number of pages10
JournalACS Applied Energy Materials
Volume6
Issue number15
DOIs
Publication statusPublished - 14 Aug 2023

Keywords

  • AEMFC
  • CPO-27
  • g-CN
  • nickle−cobalt metal catalyst
  • oxygen reduction reaction

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