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Sibunit Carbon-Based Cathodes for Proton-Exchange-Membrane Fuel Cells

✍ Scribed by N. P. Lebedeva; A. S. Booij; I. N. Voropaev; P. A. Simonov; A. V. Romanenko

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
738 KB
Volume
9
Category
Article
ISSN
1615-6846

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✦ Synopsis

Abstract

Preparation, characterisation and evaluation of a novel cathode catalyst for H~2~/O~2~ PEMFC – 40 wt.‐% Pt/Sibunit 1562P carbon – is presented. The performance of the cathodes based on the latter material is compared to that of a widely used commercially available reference material – 40 wt.‐% Pt/Vulcan XC 72R – Hispec 4000 (Johnson Matthey, UK). It has been found that the mass activity of the 40 wt.‐% Pt/Sibunit 1562P catalyst exceeds that of a commercial benchmark by a factor of 2 due to a better dispersion of the Pt metal realised in the Sibunit – supported catalyst. Mass transport properties of the two catalysts studied are virtually equal.

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Proton exchange membrane fuel cell (PEMFC) performance degrades when carbon monoxide (CO) is present in the fuel gas; this is referred to as CO poisoning. This paper investigates CO poisoning of PEMFCs by reviewing work on the electrochemistry of CO and hydrogen, the experimental performance of PEMF