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

JOURNAL OF POWER SOURCES

卷:449

Article

Dogdibegovic, Emir¹  Fukuyama, Yosuke²  Tucker, Michael C.¹ 

[1] Lawrence Berkeley Natl Lab, Energy Storage & Distributed Resources Div, 1 Cyclotron Rd,MS 62-203, Berkeley, CA 94720 USA

[2] Nissan Motors Co Ltd, Nissan Res Ctr, EV Syst Lab, 1 Natsushima Cho, Yokosuka, Kanagawa 2378523, Japan

关键词: Solid oxide fuel cell;    Metal-support;    Infiltration;    Ethanol internal reforming;   

DOI  :  10.1016/j.jpowsour.2019.227598

来源: Elsevier

【 摘 要 】

Internal reforming of ethanol fuel was investigated 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-Sm0.20Ce0.80O2.delta (Ni-SDCN40) and fuel-side metal support leads to complete internal reforming, as confirmed 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 degrees C in ethanol-water blend, and L4 W cm(-2) at 700 degrees C in anhydrous ethanol fuel. Initial durability tests with ethanol-water blend show promising stability for 100 h at 700 degrees C and 0.7 V. Carbon is not deposited in the Ni-SDCN40 anode during operation.

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