Materials for solid state electrolytes and protective electrode coatings for lithium batteries
US-2015364747-A1 · Dec 17, 2015 · US
Method for producing cathode active material for solid state battery
US9972826B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9972826-B2 |
| Application number | US-201615054754-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 26, 2016 |
| Priority date | Mar 12, 2015 |
| Publication date | May 15, 2018 |
| Grant date | May 15, 2018 |
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Abstract
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A main object of the present invention is to provide a method for producing a cathode active material for a solid state battery, which is capable of reducing resistance. The present invention solves the problem by providing a method for producing a cathode active material for a solid state battery comprising steps of: a coating step of coating a coating material represented by Li x PO y (2≤x≤4, 3≤y≤5) on a surface of a cathode active material containing an Ni element and being an oxide by using a sputtering method; and a heat-treating step of forming a coating portion in such a manner that the cathode active material coated with the coating material is heat-treated within a range of 400° C. to 650° C. to diffuse the Ni element into the coating material.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing a cathode active material complex for a solid state battery, the method comprising: coating, by a sputtering method, a coating material represented by Li x PO y (2≤x≤4, 3≤y≤5) on a surface of a cathode active material that contains an Ni element and is an oxide; and forming a coating portion by heat-treating the cathode active material coated with the coating material within a range of 400° C. to 650° C. to diffuse the Ni element into the coating material. 2. The method for producing a cathode active material complex for a solid state battery according to claim 1 , wherein the coating portion is amorphous. 3. The method for producing a cathode active material complex for a solid state battery according to claim 1 , wherein the cathode active material is LiNi 0.5 Mn 1.5 O 4 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 . 4. The method for producing a cathode active material complex for a solid state battery according to claim 1 , wherein the cathode active material coated with the coating material is heat-treated within a range of 550° C. to 650° C.
Assignees
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Classifications
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
Solid materials · CPC title
as layered products · CPC title
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
Particles consisting of a mixture of two or more inorganic phases · CPC title
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- What does patent US9972826B2 cover?
- A main object of the present invention is to provide a method for producing a cathode active material for a solid state battery, which is capable of reducing resistance. The present invention solves the problem by providing a method for producing a cathode active material for a solid state battery comprising steps of: a coating step of coating a coating material represented by Li x PO y (2≤x≤4…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/0426. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 15 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).