Electrochemical Evaluation of Porous Non-Platinum Oxygen Reduction Catalysts for Polymer Electrolyte Fuel Cells

A porous non‐platinum electrocatalyst for the oxygen reduction reaction (ORR), obtained by pyrolysing a cobalt porphyrin precursor, was evaluated by electrochemical means. The reactivity of the non‐platinum ORR catalyst was investigated with a rotating disc electrode (RDE) experimental set up. RDE d...

Full description

Saved in:
Bibliographic Details
Published in:Fuel cells (Weinheim an der Bergstrasse, Germany) Germany), 2009-10, Vol.9 (5), p.547-553
Main Authors: Olson, T. S., Blizanac, B., Piela, B., Davey, J. R., Zelenay, P., Atanassov, P.
Format: Article
Language:English
Subjects:
Catalyst
DMFC
Fuel Cell
Non-Platinum
Oxygen Reduction
PEMFC
Pyrolysed
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A porous non‐platinum electrocatalyst for the oxygen reduction reaction (ORR), obtained by pyrolysing a cobalt porphyrin precursor, was evaluated by electrochemical means. The reactivity of the non‐platinum ORR catalyst was investigated with a rotating disc electrode (RDE) experimental set up. RDE data were collected in an acidic electrolyte containing N2, O2, CO and under mixed reactant O2/methanol conditions. The electrochemical performance of such‐obtained non‐platinum catalyst is discussed and compared to platinum‐based ORR catalysts. Based on the results collected here, we are able to propose and test possible proton exchange fuel cell (PEFC) operating conditions where non‐platinum ORR catalysts can be utilised. Direct methanol fuel cell (DMFC) data demonstrating a superior performance of the non‐platinum catalyst relative to platinum black, often perceived as the state‐of‐the‐art oxygen–reduction catalyst for the DMFC cathode is presented.
ISSN:1615-6846
1615-6854
DOI:10.1002/fuce.200800089