Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9761719 | Solid State Ionics | 2005 | 6 Pages |
Abstract
A dense yttria-stabilized zirconia (YSZ, 8 mol% Y2O3) film was successfully fabricated by an electrostatic powder-coating process associated with suspension modifying on a porous anode (NiO/YSZ) substrate. The YSZ green powder layer formed by the unmodified process consisted of the loosely packed particles and could not be densified by sintering. After modifying this green layer by a suspension, a dense wet layer was formed that could be sintered at 1450 °C. SEM observations showed the film to be dense and approximately 8 μm thick. A single cell with this YSZ electrolyte on Ni/YSZ anode and Ag as cathode was assembled and tested in the temperature range from 550 to 750 °C. The open circuit voltage (OCV) and peak power density of the single cell at 750 °C was 1.1 V, which is very close to the theoretical value, and 142 mW/cm2, respectively. The results illustrate that YSZ membranes fabricated by this process are quite dense and gas tight.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Weitao Bao, Wei zhu, Guangyan Zhu, Jianfeng Gao, Guangyao Meng,