Positive electrode active material for lithium secondary battery and positive electrode including same
US-10020507-B2 · Jul 10, 2018 · US
Plate-shaped lithium composite oxide, and method for manufacturing same
US2018315996A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018315996-A1 |
| Application number | US-201816009318-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 15, 2018 |
| Priority date | Dec 18, 2015 |
| Publication date | Nov 1, 2018 |
| Grant date | — |
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Abstract
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A plate-shaped lithium composite oxide is used as a positive electrode of a lithium ion battery. The plate-shaped lithium composite oxide is composed of a plurality of bound primary particles. The plurality of bound primary particles are respectively constituted by a lithium composite oxide having a layered rock-salt structure. An average number of the primary particles disposed in a thickness direction perpendicular to a plate face is less than or equal to 6.
First claim
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1 . A plate-shaped lithium composite oxide for use of a positive electrode of a lithium ion battery, the plate-shaped lithium composite oxide is composed of a plurality of bound primary particles respectively constituted by a lithium composite oxide having a layered rock-salt structure, wherein: an average number of the primary particles disposed in a thickness direction perpendicular to a plate face is less than or equal to 6. 2 . The plate-shaped lithium composite oxide according to claim 1 , wherein an average equivalent circle diameter of the plurality of bound primary particles is greater than or equal to 10 μm. 3 . The plate-shaped lithium composite oxide according to claim 1 , wherein a thickness in the thickness direction is greater than or equal to 35 μm. 4 . The plate-shaped lithium composite oxide according to claim 1 , wherein the average number of the bound primary particles disposed in the thickness direction is less than or equal to 3. 5 . A method for manufacturing of a plate-shaped lithium composite oxide comprising: forming a transition metal compound green body constituted by a transition metal compound and having a plurality of pores in an inner portion, disposing a lithium source on a principal face of the transition metal compound green body, firing the transition metal compound green body with the lithium source disposed thereon to form a lithium composite oxide sintered body which is composed of a plurality of bound primary particles respectively constituted by a lithium composite oxide having a layered rock-salt structure, and filling lithium into the plurality of pores, and coarsening the plurality of bound primary particles by firing the lithium composite oxide sintered body.
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Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title
of inorganic oxides or hydroxides · CPC title
of only powdered material · CPC title
- H01M4/0471Primary
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
Ceramic materials · CPC title
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- What does patent US2018315996A1 cover?
- A plate-shaped lithium composite oxide is used as a positive electrode of a lithium ion battery. The plate-shaped lithium composite oxide is composed of a plurality of bound primary particles. The plurality of bound primary particles are respectively constituted by a lithium composite oxide having a layered rock-salt structure. An average number of the primary particles disposed in a thickness …
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/0471. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Nov 01 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).