Electrophoretically deposited thin film electrolyte for solid oxide fuel cell

Abstract

Thin films of 8 mol% yttria stabilised zirconia (YSZ) electrolyte have been deposited on nonconducting porous NiO-YSZ anode substrates using electrophoretic deposition (EPD) technique. Deposition of such oxide particulates on non-conducting substrates is made possible by placing a conducting steel plate on the reverse side of the presintered porous substrates. Thickness of the substrates, onto which the deposition has been carried out, varied in the range 0?5-2?0 mm. Dense and uniform YSZ thin films (thickness: 5-20 mm) are obtained after being cofired at 1400uC for 6 h. The thickness of the deposited films is seemed to be increased with increasing porous substrate thickness. Solid oxide fuel cell (SOFC) performance is measured at 800uC using coupon cells with various anode thicknesses. While a peak power density of 1?41 W cm 22 for the cells with minimum anode thickness of 0?5 mm is achieved, the cell performance decreases with anode thickness.

Electrophoretic Deposition of Zirconia Thin Film on Nonconducting Substrate for Solid Oxide Fuel Cell Application

“…As reported and observed from our earlier experiments, in EPD, the deposition rate is directly proportional to the deposited particulate film thickness . Therefore, variation of deposition rate is measured in‐terms of film thickness (Fig.…”

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

“…The relevance of the application of electrodeposition in solid oxide fuel cell (SOFC) technology is associated with the search for new methods to increase the specific power and stability of the cells’ operation, particularly at reduced temperatures [ 1 ]. Enhancement of the cells’ efficiency using electrodeposition can be achieved by increasing the electrochemical activity of the electrodes through the deposition of catalytically active nanoparticles, reducing the cell ohmic resistance by the formation of a thin-film electrolyte membrane, blocking the leakage current or chemical interaction between functional layers by the deposition of thin buffer layers and by creating protective coatings on the interconnections [ 2 , 3 , 4 , 5 , 6 ]. The transition to the use of nanoscale heterostructure materials including two-dimensional materials such as graphene and its nanocomposites, metal–organic frameworks and metal oxide nanosheets, is a topical modern direction for increasing the efficiency of fuel cells operating in the low-temperature range (400–650 °C) [ 7 , 8 , 9 , 10 , 11 ].…”

An investigation on the properties of YSZ/Al2O3 nanocomposite coatings on Inconel by electrophoretic deposition

“…Although there are variety of approaches to manufacture CMCs, common challenges are minimizing the defects size introduced into the composite during fabrication and selecting appropriate reinforcements because their analogy with matrix and their distribution can affect service reliability and mechanical integrity. 6,7…”

“…Although there are variety of approaches to manufacture CMCs, common challenges are minimizing the defects size introduced into the composite during fabrication and selecting appropriate reinforcements because their analogy with matrix and their distribution can affect service reliability and mechanical integrity. 6,7 Yttria-stabilized zirconia (YSZ) is frequently of interest as a matrix due to its excellent mechanical properties such as high bending strength, proper fracture toughness, and low thermal conductivity. 8,9 Al 2 O 3 can also be considered as a reinforcement in YSZ due to its outstanding properties like hardness, chemical and wear resistances, and improved fracture strength.…”