SLURRY COMPOSITION FOR PRODUCING CERAMIC ELECTROLYTE Russian patent published in 2024 - IPC C04B35/486 C04B35/632 H01M8/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a slurry composition for producing dense ceramics for solid electrolytes based on stabilized zirconium oxide, which can be used in electrochemical devices, such as fuel cells, electrolyzers, oxygen concentrators, etc. Slurry composition for producing a ceramic electrolyte contains zirconium oxide-based solid electrolyte powder, isopropyl alcohol as a solvent, fish oil as a dispersant, polyvinyl butyral – as a binder, and polyethylene glycol – as a plasticiser, wherein the slurry contains a solid electrolyte powder of composition 90 mol.% ZrO₂ + 6 mol.% Sc₂O₃ + 4 mol.% Y₂O₃ of a coarse fraction of 10–45 mcm and a fine fraction of up to 10 mcm in a weight ratio of 7:3, a mixture of fish oil and oleic acid as a dispersant, a mixture of polyvinyl butyral “ПШ-1” and polyvinyl butyral “ЛА” – as a binder, mixture of polyethylene glycol “ПЭГ-200” and dioctyl sebacate – as a plasticiser, with the following ratio of components, wt.%: solid electrolyte powder – 38, fish oil – 1.2, oleic acid – 0.6, polyvinyl butyral “ПШ-1” – 4.4, polyvinyl butyral “ЛА” – 3.0, polyethylene glycol “ПЭГ-200” – 1.9, dioctyl sebacate – 1.9, isopropyl alcohol – 49.

EFFECT: shorter time for preparing the slurry, as well as excluding highly toxic dibutyl phthalate from its composition.

1 cl, 1 dwg, 1 tbl, 1 ex