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CO tolerance of polymer electrolyte fuel cells

Abstract

Reformed methanol can be used as a fuel for polymer electrolyte fuel cells instead of pure hydrogen. The reformate gas contains mainly H{sub 2}, CO{sub 2} in the order of 20% and low levels of CO in the order of 100 ppm. CO causes severe voltage losses due to poisoning of the anode catalyst. The effect of CO on cell performance was investigated at different CO levels up to 100 ppm. Various options to improve the CO tolerance of the fuel cell were assessed thereafter, of which the injection of a few percents of oxygen into the fuel feed stream proved to be most effective. By mixing 1% of oxygen with hydrogen containing 100 ppm CO, complete recovery of the cell performance could be attained. (author) 2 figs., 2 tabs., 3 refs.
Authors:
Gubler, L; Scherer, G G; Wokaun, A [1] 
  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Publication Date:
Aug 01, 1999
Product Type:
Technical Report
Report Number:
ETDE-CH-9901
Reference Number:
SCA: 300503; PA: CH-99:0E0031; EDB-99:091602; SN: 99002111473
Resource Relation:
Other Information: PBD: 1999; Related Information: Is Part Of Paul Scherrer Institute Scientific Report 1998. Volume V: General Energy; Daum, C.; Leuenberger, J. [eds.]; PB: 121 p.
Subject:
30 DIRECT ENERGY CONVERSION; CARBON MONOXIDE; ELECTROCHEMICAL ENERGY CONVERSION; EXPERIMENTAL DATA; MEMBRANES; METHANOL FUELS; POLYMERS; PROGRESS REPORT; SOLID ELECTROLYTE FUEL CELLS
OSTI ID:
685688
Research Organizations:
Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1423-7342; Other: ON: DE99754426; TRN: CH99E0031
Availability:
OSTI as DE99754426
Submitting Site:
CH
Size:
pp. 59-60
Announcement Date:

Citation Formats

Gubler, L, Scherer, G G, and Wokaun, A. CO tolerance of polymer electrolyte fuel cells. Switzerland: N. p., 1999. Web.
Gubler, L, Scherer, G G, & Wokaun, A. CO tolerance of polymer electrolyte fuel cells. Switzerland.
Gubler, L, Scherer, G G, and Wokaun, A. 1999. "CO tolerance of polymer electrolyte fuel cells." Switzerland.
@misc{etde_685688,
title = {CO tolerance of polymer electrolyte fuel cells}
author = {Gubler, L, Scherer, G G, and Wokaun, A}
abstractNote = {Reformed methanol can be used as a fuel for polymer electrolyte fuel cells instead of pure hydrogen. The reformate gas contains mainly H{sub 2}, CO{sub 2} in the order of 20% and low levels of CO in the order of 100 ppm. CO causes severe voltage losses due to poisoning of the anode catalyst. The effect of CO on cell performance was investigated at different CO levels up to 100 ppm. Various options to improve the CO tolerance of the fuel cell were assessed thereafter, of which the injection of a few percents of oxygen into the fuel feed stream proved to be most effective. By mixing 1% of oxygen with hydrogen containing 100 ppm CO, complete recovery of the cell performance could be attained. (author) 2 figs., 2 tabs., 3 refs.}
place = {Switzerland}
year = {1999}
month = {Aug}
}