Features of Electrophoretic Deposition of a Ba-Containing Thin-Film Proton-Conducting Electrolyte on a Porous Cathode Substrate

Applied Sciences

Elena Kalinina¹  Kirill Shubin²  Alexander Kolchugin³  Andrei Farlenkov³  Elena Pikalova³ 

[1] Laboratory of Complex Electrophysic Investigations, Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620016, Russia;Laboratory of Cross-Cutting Technologies in Distributed Power Generation (InEnergy), Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620137, Russia;Laboratory of Solid Oxide Fuel Cells, Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620137, Russia;

关键词: solid oxide fuel cell;    proton-conducting electrolyte;    barium cerate;    thin film;    cathode-supported cell;    electrophoretic deposition;   

DOI  :  10.3390/app10186535

来源: DOAJ

【 摘 要 】

This paper presents the study of electrophoretic deposition (EPD) of a proton-conducting electrolyte of BaCe_0.89Gd_0.1Cu_0.01O_3-δ (BCGCuO) on porous cathode substrates of LaNi_0.6Fe_0.4O_3−δ (LNFO) and La_1.7Ba_0.3NiO_4+δ (LBNO). EPD kinetics was studied in the process of deposition of both a LBNO sublayer on the porous LNFO substrate and a BCGCuO electrolyte layer. Addition of iodine was shown to significantly increase the deposited film weight and decrease the number of EPD cycles. During the deposition on the LNFO cathode, Ba preservation in the electrolyte layer after sintering at 1450 °C was achieved only with a film thickness greater than 20 μm. The presence of a thin LBNO sublayer (10 μm) did not have a pronounced effect on the preservation of Ba in the electrolyte layer. When using the bulk LBNO cathode substrate as a Ba source, Ba was retained in a nominal amount in the BCGCuO film with a thickness of 10 μm. The film obtained on the bulk LBNO substrate, being in composition close to the nominal composition of the BCGCuO electrolyte, possessed the highest electrical conductivity among the films deposited on the various cathode substrates. The technology developed is a base step in the adaptation of the EPD method for fabrication of cathode-supported Solid Oxide Fuel Cells (SOFCs) with dense barium-containing electrolyte films while maintaining their nominal composition and functional characteristics.

【 授权许可】

Unknown