Solid-state structures with volatile sintering aids, and methods for fabrication and use thereof
US-2024429439-A1 · Dec 26, 2024 · US
Solution-assisted densification of NaSICON ceramics
US11600856B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11600856-B2 |
| Application number | US-202117153607-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2021 |
| Priority date | Jan 21, 2020 |
| Publication date | Mar 7, 2023 |
| Grant date | Mar 7, 2023 |
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Abstract
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A sodium-ion conducting NaSICON ceramic can be densified via the addition of a solvent to a NaSICON powder and subsequent pressing under high pressure and mild heat. Densification to ˜90% relative density can be achieved, providing a path toward low-temperature fabrication of Na-ion conductors.
First claim
Opening claim text (preview).
We claim: 1. A method for fabricating dense NaSICON ceramic, comprising: providing a powder of NaSICON particles, adding a NaOH solvent to the powder to at least partially dissolve the NaSICON particles in the added NaOH solvent to provide a dissolved solution, and applying a sintering pressure and a sintering temperature to the dissolved solution sufficient to reprecipitate NaSICON particles and form a dense NaSICON ceramic. 2. The method of claim 1 , wherein the sintering temperature is less than 300° C. 3. The method of claim 1 , wherein the sintering temperature is less than 200° C. 4. The method of claim 1 , wherein the NaSICON ceramic comprises Na 1+x Zr 2 Si x P 3−x O 12 , 0≤x≤3. 5. The method of claim 4 , wherein the NaSICON ceramic comprises NaZr 2 P 3 O 12 or Na 3 Zr 2 Si 2 PO 12 . 6. The method of claim 1 , wherein the pH of the NaOH solvent is greater than 13.
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Classifications
Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint · CPC title
Oxides · CPC title
based on phosphates {, e.g. hydroxyapatite} · CPC title
in the form of mixtures · CPC title
Pressure sintering · CPC title
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- What does patent US11600856B2 cover?
- A sodium-ion conducting NaSICON ceramic can be densified via the addition of a solvent to a NaSICON powder and subsequent pressing under high pressure and mild heat. Densification to ˜90% relative density can be achieved, providing a path toward low-temperature fabrication of Na-ion conductors.
- Who is the assignee on this patent?
- Nat Tech & Eng Solutions Sandia Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0562. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 07 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).