Journal of the Japan Institute of Energy
Online ISSN : 1882-6121
Print ISSN : 0916-8753
ISSN-L : 0916-8753
Special articles: Biomass (Technical Report)
Effect of the Impurities in Bioethanol on Current Density of a Direct Ethanol Fuel Cell
Hirokazu ISHITOBIDaiki NAITOYurina INOMasaya YAJIMANobuyoshi NAKAGAWA
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2016 Volume 95 Issue 10 Pages 909-914

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Abstract

The degradation of current density by impurities in bioethanol from lignocellulosic biomass for use in a direct ethanol fuel cell was evaluated. The degradation experiment of using a single cell was conducted by adding nine impurities, i.e., methanol, acetaldehyde, acetic acid, 1-propanol, allyl alcohol, ethyl acetate, 3-methyl-1-butanol, acetal (acetaldehyde diethyl acetal), and benzaldehyde, to a 2 M ethanol aqueous solution. The current density of the single cell was degraded by the quasi bioethanol including the nine impurities. To clarify the principal poisoning impurity, we performed the cell measurement by only adding each single impurity. As a result, allyl alcohol turned out to be the main catalyst poison under the estimated condition. The negative effects by the other impurities were almost negligible.

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© 2016 The Japan Institute of Energy
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