Ceramic-polymer composite electrolytes for lithium polymer batteries
US-2017187063-A1 · Jun 29, 2017 · US
Polymer electrolyte and preparation method therefor
US11387489B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11387489-B2 |
| Application number | US-201816487725-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 21, 2018 |
| Priority date | Sep 21, 2017 |
| Publication date | Jul 12, 2022 |
| Grant date | Jul 12, 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 polymer electrolyte including a poly(ethylene oxide) (PEO) containing polymer; and a lithium salt, wherein a terminal of the poly(ethylene oxide) containing polymer is substituted with a sulfur compound functional group, a nitrogen compound functional group or a phosphorus compound functional group, and a method for preparing the same and a battery containing the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polymer electrolyte comprising: a poly(ethylene oxide) containing polymer; and a lithium salt, wherein the poly(ethylene oxide) containing polymer is represented by formula 2 or formula 3 below: wherein n is a repeating unit of an integer of 10 to 120, and R is an alkyl chain having 1-4 carbon atoms. 2. The polymer electrolyte according to claim 1 , wherein the poly(ethylene oxide) containing polymer is represented by formula 2 below: wherein n is a repeating unit of an integer of 10 to 120, and R is an alkyl chain having 1-4 carbon atoms. 3. The polymer electrolyte according to claim 1 , wherein the poly(ethylene oxide) containing polymer is represented by formula 3 below: wherein n is a repeating unit of an integer of 10 to 120, and R is an alkyl chain having 1-4 carbon atoms. 4. The polymer electrolyte according to claim 1 , wherein the lithium salt is at least one selected from the group consisting of LiCl, LiBr, LiI, LiClO 4 , LiBF 4 , LiB 10 Cl 10 , LiPF 6 , LiCF 3 SO 3 , LiCF 3 CO 2 , LiAsF 6 , LiSbF 6 , LiAlCl 4 , CH 3 SO 3 Li, CF 3 SO 3 Li, LiSCN, LiC(CF 3 SO 2 ) 3 , (CF 3 SO 2 ) 2 NLi, (FSO 2 ) 2 NLi, chloroborane lithium, lithium lower aliphatic carboxylate, lithium 4-phenylborate, imide, and bis(trifluoromethane sulfonyl)imide (LiTFSI). 5. The polymer electrolyte according to claim 1 , wherein the poly(ethylene oxide) containing polymer has a molecular weight in the range of 1-20 kg/mol. 6. The polymer electrolyte according to claim 1 , wherein in the polymer electrolyte, ethylene oxide (EO) of the poly(ethylene oxide) containing polymer and lithium (Li + ) of the lithium salt are present in a ratio of concentration of [Li + ]/[EO] between 0.02 and 0.08. 7. The polymer electrolyte according to claim 1 , wherein an ion transference characteristic of the polymer electrolyte is 10 −5 to 10 −3 S/cm. 8. The polymer electrolyte according to claim 1 , wherein the polymer electrolyte is a solid electrolyte for an all-solid state battery. 9. A method of preparing the polymer electrolyte according to claim 1 , comprising the steps of: (a) adding a phosphorus compound to a poly(ethylene oxide) containing polymer to modify a terminal of the poly(ethylene oxide) containing polymer; and (b) adding a lithium salt to the product of (a), wherein the poly(ethylene oxide) containing polymer is represented by formula 2 or formula 3 below: wherein n is a repeating unit of an integer of 10 to 120, and R is an alkyl chain having 1-4 carbon atoms. 10. The method of preparing the polymer electrolyte according to claim 9 , wherein in step (a), the phosphorus compound is added, wherein the phosphorus compound is a diethyl phosphonate compound or a phosphonic acid compound. 11. An all-solid state battery comprising: a positive electrode, a negative electrode and a solid polymer electrolyte interposed therebetween, wherein the solid polymer electrolyte is the polymer electrolyte of claim 1 .
Assignees
Inventors
Classifications
containing oxygen in addition to phosphorus · CPC title
Organic polymers · CPC title
- H01M10/0565Primary
Polymeric materials, e.g. gel-type or solid-type · CPC title
Li-accumulators · CPC title
acrylonitrile · 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 US11387489B2 cover?
- A polymer electrolyte including a poly(ethylene oxide) (PEO) containing polymer; and a lithium salt, wherein a terminal of the poly(ethylene oxide) containing polymer is substituted with a sulfur compound functional group, a nitrogen compound functional group or a phosphorus compound functional group, and a method for preparing the same and a battery containing the same.
- Who is the assignee on this patent?
- Lg Chemical Ltd, Postech Acad Ind Found, Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0565. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 12 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).