Composite active material, solid state battery and method for producing composite active material
US-2015311507-A1 · Oct 29, 2015 · US
Method of producing an active material powder
US9929403B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9929403-B2 |
| Application number | US-201514640772-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 6, 2015 |
| Priority date | Mar 19, 2014 |
| Publication date | Mar 27, 2018 |
| Grant date | Mar 27, 2018 |
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- Title
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- Abstract
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Abstract
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A method of producing an active material powder includes (i) an attachment step of obtaining a powder including an active material particle, which stores and releases lithium ions at a potential of 4.5 V or higher based on Li, and a coating layer precursor, which is attached to a surface of the active material particle, by attaching an alkoxide solution containing lithium ions and niobium ions to the surface of the active material particle and drying the attached alkoxide solution; and (ii) a heating step of forming a coating layer on the surface of the active material particle by heating the powder obtained in the attachment step to be within a temperature range of 120° C. to 200° C.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of producing an active material powder, the method comprising: attaching an alkoxide solution containing lithium ions and niobium ions to a surface of an active material particle and drying the attached alkoxide solution to obtain a powder; and heating the powder within a temperature range of 120° C. to 200° C. to form a coating layer on the surface of the active material particle, wherein the active material particle contains Mn and stores and releases lithium ions at a potential of 4.5 V or higher based on Li. 2. The method according to claim 1 , wherein the alkoxide solution attached to the surface of the active material particle is dried while the alkoxide solution is attached to the surface of the active material particle. 3. The method according to claim 1 , wherein the active material particle contains LiNi 0.5 Mn 1.5 O 4 or LiNi 1/3 Co 1/3 Mn 1/3 O 2 . 4. The method according to claim 1 , wherein the active material particle contains LiNi 0.5 Mn 1.5 O 4 .
Assignees
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Classifications
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
one phase coated with the other · CPC title
Surface area · CPC title
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title
- H01M4/366Primary
as layered products · CPC title
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- What does patent US9929403B2 cover?
- A method of producing an active material powder includes (i) an attachment step of obtaining a powder including an active material particle, which stores and releases lithium ions at a potential of 4.5 V or higher based on Li, and a coating layer precursor, which is attached to a surface of the active material particle, by attaching an alkoxide solution containing lithium ions and niobium ions …
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 27 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).