Preparation of NiO-YSZ Composite Powder Through 2-Step Hydrothermal Synthesis and Its Application to Solid Oxide Fuel Cell Anode Functional Layer

Title
Preparation of NiO-YSZ Composite Powder Through 2-Step Hydrothermal Synthesis and Its Application to Solid Oxide Fuel Cell Anode Functional Layer
Authors
신동욱
Keywords
NiO-YSZ; Anode Functional Layer; Hydrothermal Synthesis; Solid Oxide Fuel Cells
Issue Date
2015-01
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v. 15, NO 1, Page. 536-539
Abstract
NiO-YSZ composite powders were prepared by 2-step hydrothermal synthesis and applied as an anode functional layer to improve the performance of SOFCs. The precursor solution containing yttrium chloride, zirconium oxychloride, and nickel nitrate was hydrothermally treated at 100 similar to 130 degrees C for 36 h and then calcined at 900 degrees C for 4 h. The results of X-ray diffraction, Field-Emission Scanning Electron Microscope and Transmission Electron Microscope showed that the NiO (50 similar to 100 nm) and YSZ (200 similar to 300 nm) were successfully synthesized and these two phases were well separated with the weak agglomeration. Electrical conductivity of the cermet made from the powders produced by 2-step hydrothermal synthesis was much higher than that of the cermet prepared by ball milling. A single cell with anode functional layer showed a maximum power density of 1.7 W/cm(2) at 800 degrees C, which may be owing to the homogeneous distribution and the small particle size of the obtained powders.
URI
http://hdl.handle.net/20.500.11754/21545http://www.ingentaconnect.com/content/asp/jnn/2015/00000015/00000001/art00097
ISSN
1533-4880
DOI
http://dx.doi.org/10.1166/jnn.2015.8400
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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