Hydroxide ion conductive separator and zinc secondary battery
US-11431034-B2 · Aug 30, 2022 · US
LDH-like compound separator and zinc secondary battery
US12519112B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12519112-B2 |
| Application number | US-202318180276-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2023 |
| Priority date | Nov 30, 2020 |
| Publication date | Jan 6, 2026 |
| Grant date | Jan 6, 2026 |
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Abstract
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Provided is an LDH-like compound separator including a porous substrate made of a polymeric material; and a layered double hydroxide (LDH)-like compound with which pores of the porous substrate are plugged. A central region along the thickness of the LDH-like compound separator has a lower mean porosity than peripheral regions along the thickness of the LDH-like compound separator.
First claim
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What is claimed is: 1 . An LDH-like compound separator comprising a porous substrate made of a polymeric material; and a layered double hydroxide (LDH)-like compound with which pores of the porous substrate are plugged, wherein a central region along the thickness of the LDH-like compound separator has a lower mean porosity than peripheral regions along the thickness of the LDH-like compound separator. 2 . The LDH-like compound separator according to claim 1 , wherein the LDH-like compound is: (a) a hydroxide and/or an oxide with a layered crystal structure, containing: Mg; and one or more elements, which include at least Ti, selected from the group consisting of Ti, Y, and Al, or (b) a hydroxide and/or an oxide with a layered crystal structure, comprising (i) Ti, Y, and optionally Al and/or Mg, and (ii) at least one additive element M selected from the group consisting of In, Bi, Ca, Sr, and Ba, or (c) a hydroxide and/or an oxide with a layered crystal structure, comprising Mg, Ti, Y, and optionally Al and/or In, wherein in (c) the LDH-like compound is present in a form of a mixture with In(OH) 3 . 3 . The LDH-like compound separator according to claim 1 , wherein the peripheral regions have a mean porosity of 3% or more and the central region has a mean porosity of 2% or less. 4 . The LDH-like compound separator according to claim 1 , wherein the peripheral regions have a mean porosity of 3 to 15% and the central region has a mean porosity of 1%) or less. 5 . The LDH-like compound separator according to claim 1 , wherein the LDH-like compound is incorporated over the entire thickness of the porous substrate. 6 . The LDH-like compound separator according to claim 1 , having a helium permeability per unit area of 3.0 cm/atm m in or less. 7 . The LDH-like compound separator according to claim 1 , having an ionic conductivity of 2.0 mS/cm or more. 8 . The LDH-like compound separator according to claim 1 , wherein the polymeric material is selected from the group consisting of polystyrene, poly(ether sulfone), polypropylene, epoxy resin, poly(phenylene sulfide), fluorocarbon resin, cellulose, nylon, and polyethylene. 9 . The LDH-like compound separator according to claim 1 , consisting of the porous substrate and the LDH-like compound. 10 . A secondary zinc battery comprising the LDH-like compound separator according to claim 1 . 11 . A solid-state alkaline fuel cell comprising the LDH-like compound separator according to claim 1 .
Assignees
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Classifications
Alkaline fuel cells · CPC title
Ceramics · CPC title
comprising layers of only organic material and layers containing inorganic material · CPC title
Porosity · CPC title
Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties · CPC title
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Frequently asked questions
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- What does patent US12519112B2 cover?
- Provided is an LDH-like compound separator including a porous substrate made of a polymeric material; and a layered double hydroxide (LDH)-like compound with which pores of the porous substrate are plugged. A central region along the thickness of the LDH-like compound separator has a lower mean porosity than peripheral regions along the thickness of the LDH-like compound separator.
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0245. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 06 2026 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).