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.
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}
}
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}
}