Method of manufacturing positive electrode active material for lithium ion battery, positive electrode active material for lithium ion battery, electrode for lithium ion battery, and lithium ion battery
US-9216907-B2 · Dec 22, 2015 · US
Lithium transition metal phosphate secondary agglomerates and process for its manufacture
US10707479B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10707479-B2 |
| Application number | US-201414777120-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 14, 2014 |
| Priority date | Mar 15, 2013 |
| Publication date | Jul 7, 2020 |
| Grant date | Jul 7, 2020 |
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Abstract
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A Lithium-transition-metal-phosphate compound of formula Li 0.9+x Fe 1-y M y PO 4 ) in the form of secondary particles made of agglomerates of spherical primary particles wherein the primary particles have a size in the range of 0.02-2 pm and the secondary particles a mean size in the range of 10-40 pm and a BET surface of 16-40 m 2 /g, a process for its manufacture and the use thereof.
First claim
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The invention claimed is: 1. A lithium-transition-metal-phosphate compound of formula Li 0.9+x Fe 1-y M y (PO 4 ) with x≤0.3 and 0≤y≤1 and M is a metal or semimetal or mixtures thereof in the form of secondary particles made of agglomerates of spherical primary particles, wherein the primary particles have a size in the range of 0.02-2 μm and the secondary particles have a mean size (d 50 ) of 5-40 μm and a BET surface of 16-40 m 2 /g and wherein the lithium-transition-metal-phosphate compound has a tap density of 1250-1600 g/l. 2. A lithium-transition-metal-phosphate compound of formula Li 0.9+x Fe 1-y M y (PO 4 ) with x≤0.3 and 0≤y≤1 and M is a metal or semimetal or mixtures thereof in the form of secondary particles made of agglomerates of spherical primary particles, wherein the primary particles have a size in the range of 0.02-2 μm, wherein the secondary particles have a mean size (d 50 ) of 5-40 μm and a BET surface of 16-40 m 2 /g, wherein the lithium-transition-metal-phosphate compound has a tap density of 1250-1600 g/l and, wherein the lithium-transition-metal phosphate compound has a bulk porosity of 65-80%. 3. The lithium-transition-metal-phosphate compound according to claim 1 with a tap porosity of 55-65%. 4. The lithium-transition-metal-phosphate compound according to claim 1 with a bulk density of 750-1250 g/l. 5. The lithium-transition-metal-phosphate compound according to claim 1 with a press density of 2000-2800 g/l. 6. The lithium-transition-metal-phosphate compound according to claim 1 which is LiFePO 4 , LiMnPO 4 or Li 0.9+x Fe 1-y Mn y PO 4 . 7. The lithium-transition-metal-phosphate compound according to claim 1 , wherein the primary particles have a conductive carbon deposit on at least a part of the surface of the primary particles. 8. The lithium-transition-metal-phosphate compound according to claim 2 with a tap porosity of 55-65%. 9. The lithium-transition-metal-phosphate compound according to claim 2 which is LiFePO 4 , LiMnPO 4 or Li 0.9+x Fe 1-y Mn y PO 4 . 10. The lithium-transition-metal-phosphate compound according to claim 2 , wherein the primary particles have a conductive carbon deposit on at least a part of the surface of the primary particles.
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Classifications
Energy storage using batteries · CPC title
Spheres · CPC title
Powder tap density · CPC title
as mixtures · CPC title
Submicrometer sized, i.e. from 0.1-1 micrometer · CPC title
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- What does patent US10707479B2 cover?
- A Lithium-transition-metal-phosphate compound of formula Li 0.9+x Fe 1-y M y PO 4 ) in the form of secondary particles made of agglomerates of spherical primary particles wherein the primary particles have a size in the range of 0.02-2 pm and the secondary particles a mean size in the range of 10-40 pm and a BET surface of 16-40 m 2 /g, a process for its manufacture and the use thereof.
- Who is the assignee on this patent?
- Johnson Matthey Plc
- What technology area does this patent fall under?
- Primary CPC classification B82Y30/00. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 07 2020 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).