Electrochemical reduction of oxygen on nano-structured M (M = Fe, Co, Ce, W)Py/C in alkaline electrolyte

Jinli Qiao, Lei Ding, Li Xu, Xianfeng Dai, Yuyu Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This work reports the preparation and characterization of novel non-precious metal catalysts metal catalysts supported on carbon, M (M = Fe, Co, Ce, W)Py/C, using a solvent-milling method followed by a heat-treatment at elevated temperature, where pyridine is used as the N-rich ligand for precursor complex formation. The morphology and composition of the catalysts were characterized by Fourier-transform infrared (FT-IR) spectra and thermal analysis (TGA). The catalytic activity on oxygen reduction reaction (ORR) was found to depend strongly on the heat-treatment temperatures and the metal pressures for catalyst synthesis. The resulting MPy/C of 40/60 ratio heat-treated at 800°C shows the best catalytic performance in terms of ORR and follows the order: Co > Fe > Ce > W, where the catalyst composed of Co 10wt% -Py 30wt%/C shows the highest electroactivity for ORR in alkaline media. Using Rotating disk electrode measurements and Koutechy-Levich analysis, the overall electron transfer number in the catalyzed ORR on Co 10wt% -Py 30wt%/C was found to be 3.8, suggesting the catalyzed ORR is a 4-electron transfer process from O 2 to H 2O.

Original languageEnglish
Title of host publicationTutorials on Electrocatalysis in Low Temperature Fuel Cells
Pages111-117
Number of pages7
Edition2
DOIs
Publication statusPublished - 2012 Nov 19
EventTutorials on Electrocatalysis in Low Temperature Fuel Cells - 221st ECS Meeting - Seattle, WA, United States
Duration: 2012 May 62012 May 10

Publication series

NameECS Transactions
Number2
Volume45
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherTutorials on Electrocatalysis in Low Temperature Fuel Cells - 221st ECS Meeting
CountryUnited States
CitySeattle, WA
Period12/5/612/5/10

ASJC Scopus subject areas

  • Engineering(all)

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