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ACS Appl Mater Interfaces. 2017 Nov 15;9(45):39347-39356. doi: 10.1021/acsami.7b11462. Epub 2017 Oct 31.

Fabrication of Lanthanum Strontium Cobalt Ferrite-Gadolinium-Doped Ceria Composite Cathodes Using a Low-Price Inkjet Printer.

Author information

1
School of Mechanical Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea.
2
High-Temperature Energy Materials Research Center, Korea Institute of Science and Technology (KIST) , 14-5 Hwarang-ro, Seongbuk-gu, Seoul 02792, South Korea.

Abstract

In this work, we have successfully fabricated lanthanum strontium cobalt ferrite (LSCF)-gadolinium-doped ceria (GDC) composite cathodes by inkjet printing and demonstrated their functioning in solid oxide fuel cells (SOFCs). The cathodes are printed using a low-cost HP inkjet printer, and the LSCF and GDC source inks are synthesized with fluidic properties optimum for inkjet printing. The composition and microstructure of the LSCF and GDC layers are successfully controlled by controlling the color level in the printed images and the number of printing cycles, respectively. Anode-support type SOFCs with optimized LSCF-GDC composite cathodes synthesized by our inkjet printing method have achieved a power output of over 570 mW cm-2 at 650 °C, which is comparable to the performance of a commercial SOFC stack. Electrochemical impedance analysis is carried out to establish a relationship between the cell performance and the compositional and structural characteristics of the printed LSCF-GDC composite cathodes.

KEYWORDS:

composite cathode; gadolinium-doped ceria; inkjet printing; lanthanum strontium cobalt ferrite; solid oxide fuel cells

PMID:
29039185
DOI:
10.1021/acsami.7b11462

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