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US 2022/0177359 A1Published application
Ceramic materials
AssigneeCoorstek Membrane Sciences AS
InventorMichael Ian Budd
Life of this patent
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Abstract
The present invention relates to glass-ceramic/silver composite precursor compositions in the form of powders, and to glass-ceramics/silver composite materials produced therefrom. Such materials find particular use as interconnect materials for high temperature electrochemical conversion devices such as solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs).
Claims23
A chromium-free, glass-ceramic/silver composite precursor composition comprising:
- silver-based particles;
- and
- glass-ceramic precursor particles formed from a material having the general formula xAO-yAl2O3-zSiO2 in which AO represents an alkaline earth oxide or mixture of alkaline earth oxides and x, y and z represent the mol % of AO, Al2O3 and SiO2, respectively, and in which x=30-60 mol %, y=0-20 mol %, and z=35-65 mol %;
- wherein said composition comprises 30-70 wt % of said silver-based particles, based on the combined weight of said silver-based particles and said glass-ceramic precursor particles.
1 more element
A chromium-free, glass-ceramic/silver composite comprising:
- a silver-based phase;
- and
- one or more crystalline ceramic phases formed from a material having the general formula xAO-yAl2O3-zSiO2 in which AO represents an alkaline earth oxide or mixture of alkaline earth oxides and x, y and z represent the mol % of AO, Al2O3 and SiO2, respectively, and in which x=30-60 mol %, y=0-20 mol %, and z=35-65 mol %;
- wherein said composite comprises 30-70 wt % of said silver-based phase, based on the combined weight of said silver-based phase, said one or more crystalline ceramic phases and any residual glass phase.
1 more element
Dependencies are inferred from the claim text.