Separator structure body for use in zinc secondary battery
US-10290847-B2 · May 14, 2019 · US
LDH separator and secondary zinc battery with dendrite buffer layer
US11335973B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11335973-B2 |
| Application number | US-201916420869-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 23, 2019 |
| Priority date | Dec 27, 2017 |
| Publication date | May 17, 2022 |
| Grant date | May 17, 2022 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A layered double hydroxide (LDH) separator capable of more effectively restraining short circuiting caused by zinc dendrites. The LDH separator for secondary zinc batteries includes a porous substrate made of a polymer material and a LDH plugging pores in the porous substrate. The LDH separator has a dendrite buffer layer therein, the dendrite buffer layer being at least one selected from the group consisting of: (i) a pore-rich internal porous layer in the porous substrate, the internal porous layer being free from the LDH or deficient in the LDH; (ii) a releasable interfacial layer; which is provided by two adjacent layers constituting part of the LDH separator in releasable contact with each other; and (iii) an internal gap layer free from the LDH and the porous substrate, which is provided by two adjacent layers constituting part of the LDH separator formed apart from each other.
First claim
Opening claim text (preview).
What is claimed is: 1. A layered double hydroxide separator for secondary zinc batteries, comprising a porous substrate made of a polymer material; and a layered double hydroxide plugging pores in the porous substrate, wherein the layered double hydroxide separator has in its inside a dendrite buffer layer, wherein the dendrite buffer layer is at least one selected from the group consisting of: (i) a pore-rich internal porous layer in the porous substrate, the pore-rich internal porous layer being free from the layered double hydroxide or deficient in the layered double hydroxide; (ii) a releasable interfacial layer, which is provided by two adjacent layers constituting part of the layered double hydroxide separator being in releasable contact with each other; and (iii) an internal gap layer being free from the layered double hydroxide and the porous substrate, which is provided by two adjacent layers constituting part of the layered double hydroxide separator being formed apart from each other; and the pore-rich internal porous layer free from or deficient in the layered double hydroxide is interposed between and contacting with a pair of layered double hydroxide separator bodies made of the porous substrate having the layered double hydroxide plugging the pores thereof. 2. The layered double hydroxide separator according to claim 1 , wherein the layered double hydroxide is incorporated over the entire thickness of the porous substrate other than the dendrite buffer layer. 3. The layered double hydroxide separator according to claim 1 , wherein the dendrite buffer layer is (i) a pore-rich internal porous layer in the porous substrate, the internal porous layer being free from the layered double hydroxide or deficient in the layered double hydroxide. 4. The layered double hydroxide separator according to claim 1 , wherein the dendrite buffer layer is (ii) a releasable interfacial layer, which is provided by two adjacent layers constituting part of the layered double hydroxide separator being in releasable contact with each other. 5. The layered double hydroxide separator according to claim 1 , wherein the dendrite buffer layer is (iii) an internal gap layer being free from the layered double hydroxide and the porous substrate, which is provided by two adjacent layers constituting part of the layered double hydroxide separator being formed apart from each other. 6. The layered double hydroxide separator according to claim 1 , wherein the layered double hydroxide separator has a helium permeability per unit area of 3.0 cm/atm·min or less. 7. The layered double hydroxide separator according to claim 1 , wherein the polymer material is selected from the group consisting of polystyrene, poly(ether sulfone), polypropylene, epoxy resin, poly(phenylene sulfide), fluorocarbon resin, cellulose, nylon and polyethylene. 8. The layered double hydroxide separator according to claim 1 , consisting of the porous substrate and the layered double hydroxide. 9. A secondary zinc battery comprising the layered double hydroxide separator according to claim 1 . 10. The layered double hydroxide separator according to claim 1 , wherein the pore-rich internal porous layer is free from the layered double hydroxide. 11. The layered double hydroxide separator according to claim 1 , where the pore-rich internal porous layer is deficient in the layered double hydroxide.
Assignees
Inventors
Classifications
comprising three or more layers · CPC title
comprising layers of only organic material and layers containing inorganic material · CPC title
Porosity · CPC title
Energy storage using batteries · CPC title
with one metallic and one gaseous electrode · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11335973B2 cover?
- A layered double hydroxide (LDH) separator capable of more effectively restraining short circuiting caused by zinc dendrites. The LDH separator for secondary zinc batteries includes a porous substrate made of a polymer material and a LDH plugging pores in the porous substrate. The LDH separator has a dendrite buffer layer therein, the dendrite buffer layer being at least one selected from the g…
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/38. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 17 2022 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).