Dip-coating thin yttria-stabilized zirconia films for solid oxide fuel cell applications

Dip-coating of 8YSZ nanopowder for SOFC applications

“…The state of agglomeration of ceramic particles dictates the sintering behaviour and thus the final microstructure [6,10,14,22,24,30,31]. Agglomeration of particles leads to a low packing density of the green film and subsequently to a poor densification of the final film after sintering.…”

“…The drawbacks common to all wet-chemical coating methods, which are, among other things, cracking of the coating during drying and/ or sintering have been discussed by several authors [10][11][12][13][14][18][19][20]26]. In general by careful adjustment of the chemistry of the suspension by using additives [11,12,27], by a judicious choice of solvents [26] or by humidity control [14] cracking during drying can be avoided. A common practice to avoid cracking during co-sintering is by using substrates that shrink together with the coating [10,22,26,28].…”

“…Dipcoating is a cost-effective wet-chemical method which has been used widely in the literature to obtain thin layers [13][14][15][16][17][18][19][20][21][22]. In dip-coating a porous substrate is immersed in a liquid in which the particles to be deposited are suspended.…”

Dispersant effects on YSZ electrolyte characteristics for solid oxide fuel cells

“…Most works in the literature deal with electrolyte synthesis in organic media. The synthesis in the aqueous media has advantages, such as lower cost and lower environmental impact [13].…”

Characterization of yttria-stabilized zirconia films deposited by dip-coating on La0.7Sr0.3MnO3 substrate: Influence of synthesis parameters

“…Tikkanen et al [22] have obtained YSZ films with thickness of 15 µm by single-step dip-coating on NiO-YSZ substrate. Zhang et al [23] have deposited YSZ films with 20-30 µm of thickness by dip-coating on NiO-YSZ supports. In general, YSZ films of 5-20 µm are suitable for application as SOFC electrolyte [3].…”