The mechanism of CO mitigation in proton exchange membrane fuel cells using dilute H2O2 in the anode humidifier

Authors
Bellows, RJ Marucchi-Soos, E Reynolds, RP
Citation
Rj. Bellows et al., The mechanism of CO mitigation in proton exchange membrane fuel cells using dilute H2O2 in the anode humidifier, EL SOLID ST, 1(2), 1998, pp. 69-70
Citations number
10
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHEMICAL AND SOLID STATE LETTERS
ISSN journal
10990062 → ACNP
Volume
1
Issue
2
Year of publication
1998
Pages
69 - 70
Database
ISI
SICI code
1099-0062(199808)1:2<69:TMOCMI>2.0.ZU;2-M
Abstract
CO poisoning in proton exchange membrane fuel cells (PEMFCs) can be mitigat ed by using dilute H2O2 in the anode humidifier. However, mitigation appear s to be provided by an "unintended" O-2 bleed produced by decomposition of H2O2 in the humidifier, rather than by H2O2 vapors transported from the hum idifier to the anode. CO mitigation was effective when significant levels o f O-2 were present in the anode feed. The effectiveness of CO mitigation di sappeared when noncatalytic materials were used to suppress H2O2 decomposit ion in the humidifier. (C) 1998 The Electrochemical Society. S1099-0062(97) 12-131-9. All rights reserved.