Nano-Ceramic Cathodes via Co-sputtering of Gd–Ce Alloy and Lanthanum Strontium Cobaltite for Low-Temperature Thin-Film Solid Oxide Fuel Cells

Ren, Haowen; Lee, Yoon Ho; Wu, Erik A.; Chung, Hyeseung; Meng, Ying Shirley; Fullerton, Eric E.; Minh, Nguyen Q.

doi:10.1021/acsaem.0c01147

Title: Nano-Ceramic Cathodes via Co-sputtering of Gd–Ce Alloy and Lanthanum Strontium Cobaltite for Low-Temperature Thin-Film Solid Oxide Fuel Cells

Journal Article · Wed Sep 09 00:00:00 EDT 2020 · ACS Applied Energy Materials

DOI:https://doi.org/10.1021/acsaem.0c01147· OSTI ID:1799834

^[1]; Lee, Yoon Ho ^[2]; Wu, Erik A. ^[1]; Chung, Hyeseung ^[1];

^[1]; Fullerton, Eric E. ^[1];

^[1]

Univ. of California, San Diego, CA (United States)
Univ. of California, San Diego, CA (United States); Ulsan National Institute of Science and Technology, Ulsan (Korea, Republic of)

We report the electrochemical performance and structural characteristics of porous nanostructured ceramic cathodes for thin-film solid oxide fuel cells (TF-SOFCs) based on yttria-stabilized zirconia (YSZ) electrolytes. The nanostructured cathode is obtained through magnetron co-sputtering of gadolinium–cerium (Gd–Ce) alloy and lanthanum strontium cobaltite perovskite targets. The resultant nanostructure and composition of the ceramic cathode are controlled by adjusting the co-sputtering conditions. The peak power densities in our fabricated TF-SOFCs are the highest reported values for YSZ-based electrolyte SOFCs, showing 0.14, 0.48, 1.21, 2.56, and 3.01 W/cm2 at 450, 500, 550, 600, and 650 °C, respectively, operating under air and pure hydrogen fuel. The results show that the porosity and composition of the cathode greatly affect the resulting peak power densities. This work illustrates the capability of sputtering to produce stable, scalable, nano-ceramic cathodes with superb peak power densities when integrated in TF-SOFCs.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Fossil Energy (FE)

Grant/Contract Number:: FE0026211

OSTI ID:: 1799834

Journal Information:: ACS Applied Energy Materials, Vol. 3, Issue 9; ISSN 2574-0962

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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25 ENERGY STORAGE
chemistry
energy & fuels
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Title: Nano-Ceramic Cathodes via Co-sputtering of Gd–Ce Alloy and Lanthanum Strontium Cobaltite for Low-Temperature Thin-Film Solid Oxide Fuel Cells

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