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Issue 34, 2018
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A homogeneous grain-controlled ScSZ functional layer for high performance low-temperature solid oxide fuel cells

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Abstract

Scandia-stabilized zirconia (ScSZ) is employed as a cathodic functional layer onto yttria-stabilized zirconia based fuel cell systems for low-temperature solid oxide fuel cells. In order to overcome the relatively poor material properties in terms of surface reaction rate, the grain structure and the degree of crystallinity of ScSZ thin films were modified by controlling the RF power during the thin-film fabrication process via sputtering. The concept of grain-controlled layers (GCLs) was applied at the cathode-electrolyte interface to enhance the surface reaction rate by catalyzing the oxygen reduction reaction. By adopting this novel concept, the thin-film fuel cell fabricated with ScSZ GCLs could achieve a peak power density of 479 mW cm−2 at 450 °C.

Graphical abstract: A homogeneous grain-controlled ScSZ functional layer for high performance low-temperature solid oxide fuel cells

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Publication details

The article was received on 01 Jun 2018, accepted on 27 Jul 2018 and first published on 01 Aug 2018


Article type: Paper
DOI: 10.1039/C8TA05157G
Citation: J. Mater. Chem. A, 2018,6, 16506-16514
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    A homogeneous grain-controlled ScSZ functional layer for high performance low-temperature solid oxide fuel cells

    S. Hong, J. Son, Y. Lim, H. Yang, F. B. Prinz and Y. Kim, J. Mater. Chem. A, 2018, 6, 16506
    DOI: 10.1039/C8TA05157G

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