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Aqueous electrophoretic deposition of gadolinium doped ceria
Journal article   Open access   Peer reviewed

Aqueous electrophoretic deposition of gadolinium doped ceria

Shanshan Hu, Wei Li, Wenyuan Li, Nan Zhang, He Qi, Harry Finklea and Xingbo Liu
Colloids and surfaces. A, Physicochemical and engineering aspects, Vol.579, 123717
10/20/2019
DOI: https://doi.org/10.1016/j.colsurfa.2019.123717
Web of Science ID: WOS:000485821100068

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Abstract

Homogeneous, bubble-free and smooth gadolinium doped ceria (GDC) films were successfully obtained with the application of alternating current electrophoretic deposition (AC-EPD) in the aqueous suspension. GDC particles were well dispersed in the aqueous suspension at a pH of 9.0. The alternating current was achieved through the application of an asymmetric square wave voltage to the electrodes of the deposition cell. An optimum frequency of 1 kHz showed the best balance between the suppression of bubble evolution and enhancement of the particle migration. The deposit yield increased monotonically with increasing time under the AC-EPD with a frequency of 1 kHz, suggesting its great potential to fabricate tunable thicknesses of deposition layers. The quality of the GDC film improved with an increase in frequency. An optimum combination of forward and reverse voltages and half-widths of the pulses was found.
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