Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications

Dogdibegovic, Emir; Fukuyama, Yosuke; Tucker, Michael C.

doi:10.1016/j.jpowsour.2019.227598

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Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications

Dogdibegovic, Emir·Fukuyama, Yosuke·Tucker, Michael C.

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Abstract

Internal reforming of ethanol fuel was explored on high-performance metal-supported solid oxide fuel cells (MS-SOFCs) with infiltrated catalysts. The hydrogen concentration and internal reforming effects were evaluated systematically with different fuels including: hydrogen, simulated reformate, anhydrous ethanol, ethanol water blend, and hydrogen-nitrogen mixtures. A simple infiltration of Ni reforming catalyst into 40 vol.% Ni-Sm 0.20 Ce 0.80 O 2-δ (Ni-SDCN 40 ) and fuel-side metal support leads to complete internal reforming, as validated by comparison to simulated reformate. The performance difference between hydrogen and fully-reformed ethanol is attributed entirely to decrease in hydrogen concentration. High peak power density was achieved for a range of conditions, for example 1.0 W cm -2 at 650 °C in ethanol-water blend, and 1.4 W cm -2 at 700 °C in anhydrous ethanol fuel. Initial durability tests with ethanol-water blend show promising stability for 100 hours at 700 °C and 0.7 V. Carbon is not deposited in the Ni-SDCN 40 anode during operation.

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25 ENERGY STORAGE Ethanol internal reforming Infiltration Metal-support Solid oxide fuel cell

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Dogdibegovic, Emir, Fukuyama, Yosuke, Tucker, Michael C.. 2019-12-12. Ethanol internal reforming in solid oxide fuel cells: A path toward high performance metal-supported cells for vehicular applications. https://doi.org/10.1016/j.jpowsour.2019.227598

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