Aqueous metal–organic solutions for YSZ thin film inkjet deposition

Abstract

Inkjet printing of 8% Y2O3-stabilized ZrO2 (YSZ) thin films is achieved by designing a novel waterbased reactive ink for Drop-on-Demand (DoD) inkjet printing. The ink formulation is based on a novel chemical strategy that consists of a combination of metal oxide precursors (zirconium alkoxide and yttrium salt), water and a nucleophilic agent, i.e. n-methyldiethanolamine (MDEA). This chemistry leads to metal-organic complexes with long term ink stability and high precision printability. Ink rheology and chemical reactivity are analyzed and controlled in terms of metal-organic interactions in the solutions. Thin dense nanocrystalline YSZ film below 150 nm are obtained by low temperature calcination treatments (400-500 °C), making the deposition suitable for a large variety of substrates, including silicon, glass and metals. Thin films and printed patterns achieve full densification with no lateral shrinkage and high ionic conductivity.

Amorphous saturated cerium–tungsten–titanium oxide nanofiber catalysts for NOx selective catalytic reaction

“…water, and organics from the synthesis). Purification and crystallization are achieved by low temperatures calcination treatments (300-400 °C) carried out in air to promote oxidation and C-based compound burning 49,50 .…”

Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO 2 catalysts

“…The spinning solutions are typically reactive sol-gel solutions that upon the hydrolysis/condensation reactions generate highly homogeneous macromolecular oxoprecursor network [16,17]. It is an extremely flexible process due to the reactivity of the alkoxide precursors easily controlled by using nucleophilic ligands.…”

3D printing the next generation of enhanced solid oxide fuel and electrolysis cells

“…16,17 In this direction, Ruiz-Morales et al 18 lately reviewed the use of 3D printing for energy applications suggesting the interest of stereolithography (SLA) printing for developing high aspect ratio highly performing SOFCs. According to Ruiz-Morales, the different works devoted to the development of SOFCs by 3D printing were focused on the fabrication of planar cells [19][20][21][22][23][24][25][26][27][28][29][30][31] with the only exception of the one recently published by the authors 32 in which honeycomb structures were used to improve the mechanical stability of 3D printed YSZ membranes.…”