Cation-enhanced chemical stability of ion-conducting zirconium-based ceramics

US9988312B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9988312-B2
Application numberUS-201715460570-A
CountryUS
Kind codeB2
Filing dateMar 16, 2017
Priority dateMar 22, 2016
Publication dateJun 5, 2018
Grant dateJun 5, 2018

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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Abstract

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At least partial substitution of zirconium by hafnium in ion-conducting zirconium-based ceramics provides enhanced chemical stability in alkaline and acid environments.

First claim

Opening claim text (preview).

We claim: 1. An ion conducting ceramic comprising Na 1+x HF 2 P 3-x Si x O 12 . 2. The ion-conducting ceramic of claim 1 , wherein x=0. 3. A protective layer comprising an ion-conducting zirconium-based ceramic, wherein the zirconium is at least partially substituted by hafnium, that is coated onto another ion-conducting material comprising Na 3 Zr 2 PSi 2 O 12 that is susceptible to a different mechanism of degradation than the protective layer. 4. A protective layer comprising an ion-conducting zirconium-based ceramic, wherein the zirconium is at least partially substituted by hafnium, that is coated onto another ion-conducting material comprising Na 3 Zr 2 P 3 O 12 that is susceptible to a different mechanism of degradation than the protective layer. 5. A protective layer comprising an ion-conducting zirconium-based ceramic, wherein the zirconium is at least partially substituted by hafnium, that is coated onto another ion-conducting material comprising Na 1+x Zr 2 P 3-x Si x O 12 , wherein Zr is at least partially substituted by Hf, that is susceptible to a different mechanism of degradation than the protective layer. 6. The protective layer of claim 5 , wherein x=0. 7. A protective layer comprising Na 1+x Hf 2 P 3-x Si x O 12 that is coated onto another ion-conducting material that is susceptible to a different mechanism of degradation than the protective layer. 8. The protective layer of claim 7 , wherein x=0. 9. The protective layer of claim 7 , wherein the other ion-conducting material comprises Na 3 Zr 2 PSi 2 O 12 . 10. The protective layer of claim 7 , wherein the other ion-conducting material comprises Na 3 Zr 2 P 3 O 12 .

Assignees

Inventors

Classifications

  • Compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

  • based on phosphates {, e.g. hydroxyapatite} · CPC title

  • Lanthanum oxide or oxide-forming salts thereof · CPC title

  • based on silicates other than clay {(zircon C04B35/48)} · CPC title

  • Solid solutions · CPC title

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What does patent US9988312B2 cover?
At least partial substitution of zirconium by hafnium in ion-conducting zirconium-based ceramics provides enhanced chemical stability in alkaline and acid environments.
Who is the assignee on this patent?
Nat Tech & Eng Solutions Sandia Llc
What technology area does this patent fall under?
Primary CPC classification C04B35/481. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Jun 05 2018 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).