Das, Debasish and Bagchi, Biswajoy and Basu, Rajendra Nath (2017) Nanostructured zirconia thin film fabricated by electrophoretic deposition technique. Journal of Alloys and Compounds, 693. pp. 1220-1230. ISSN 0925-8388

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Abstract

A simple strategy based on electrophoretic deposition (EPD) technique is presented to fabricate nano-structured 8 mol% yttria stabilized zirconia (YSZ) thin film onto NiO-YSZ anode substrate. As a prerequisite for EPD technique, stable suspension of YSZ nanoparticles has been prepared in isopropanol medium using phosphate ester (PE) as dispersant. Effect of PE concentration on zeta potential, pH, electrical conductivity and stability of the suspension is studied in detail to optimize the suspension chemistry. Due to broad size distribution of YSZ particles in the initial suspension, supernatant is taken after centrifugation for subsequent EPD. This supernatant suspension produced uniform deposit with high packing density (in as-deposited stage) onto non-conducting NiO-YSZ porous substrate. Such as-deposited film resulted in thin and dense YSZ coating (thickness similar to 3 mu m) when fired at 1200 degrees C/2 h. The half-cells (anode + electrolyte) thus obtained is then used to construct SOFC coupon cell by applying a screen-printed La0.65Sr0.3MnO3 cathode layer on the top of the electrolyte. A maximum current density of 1.08 Acm(-2) is obtained at 800 degrees C and 0.7 V using hydrogen and oxygen as fuel and oxidant respectively. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Electronics
Divisions:	Fuel Cell and Battery
Depositing User:	Bidhan Chaudhuri
Date Deposited:	23 Jan 2018 11:39
Last Modified:	23 Jan 2018 11:39
URI:	http://cgcri.csircentral.net/id/eprint/4013

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