Positive electrode active material for non-aqueous secondary battery and manufacturing method thereof, as well as non-aqueous secondary battery using positive electrode active material
US-9224512-B2 · Dec 29, 2015 · US
Olivine Composition with Improved Cell Performance
US2017225952A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017225952-A1 |
| Application number | US-201415503123-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 13, 2014 |
| Priority date | Aug 13, 2014 |
| Publication date | Aug 10, 2017 |
| Grant date | — |
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Abstract
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An olivine cathode material having the formula Li a Fe 1−x−y−z Mn x D (y+z) (PO 4 ) c , wherein a, c, x, y and z represent molar amounts, wherein D=Mg and/or Cr, wherein y represent the amount of Mg and z represents the amount of Cr, wherein 1.04<a<1.15; wherein 0.97<(2*c/(a+1))<1.07; wherein 0.6<x<1−y−z; wherein 0<y+z<0.1. These material show improved cathode properties in lithium based rechargeable batteries.
First claim
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1 - 25 . (canceled) 26 . An olivine cathode material having the formula Li a Fe 1−x−y−z Mn x D (y+z) (PO 4 ) c , wherein a, c, x, y and z represent molar amounts, wherein D=Mg and/or Cr, wherein y represent the amount of Mg and z represents the amount of Cr, wherein 1.04<a<1.15; wherein 0.97<(2*c/(a+1))<1.07; wherein 0.6<x<1−y−z; wherein 0<y+z<0.1. 27 . The olivine cathode material according to claim 26 , wherein 0.04<y+z<0.08. 28 . The olivine cathode material according to claim 27 , wherein y+z>0.05. 29 . The olivine cathode material according to claim 26 , wherein z/y>1. 30 . The olivine cathode material according to claim 29 , wherein y=0. 31 . The olivine cathode material according to claim 26 , wherein 0.7<x<0.9. 32 . The olivine cathode material according to claim 31 , wherein z/y>1. 33 . The olivine cathode material according to claim 32 , wherein y=0. 34 . The olivine cathode material according to claim 31 , wherein 0.75<x<0.895. 35 . The olivine cathode material according to claim 34 , wherein z/y>1. 36 . The olivine cathode material according to claim 35 , wherein y=0. 37 . The olivine cathode material according to claim 26 , wherein 1.07<a<1.13. 38 . The olivine cathode material according to claim 26 , wherein 0.98<(2*c/(a+1))<1. 39 . The olivine cathode material according to claim 26 , wherein 1.07<a<1.13 and wherein 0.7<x<0.9. 40 . The olivine cathode material according to claim 39 , wherein z/y>1. 41 . The olivine cathode material according to claim 40 , wherein y=0. 42 . The olivine cathode material according to claim 39 , wherein 0.98<(2*c/(a+1))<1. 43 . The olivine cathode material according to claim 42 , wherein 0.75<x<0.895. 44 . The olivine cathode material according to claim 31 , wherein 0.98<(2*c/(a+1))<1. 45 . The olivine cathode material according to claim 37 , wherein 0.98<(2*c/(a+1))<1. 46 . The olivine cathode material of claim 26 , wherein at least 90% by weight of the material is a single phase olivine. 47 . The olivine cathode material according to claim 46 , wherein at least 98% by weight of the material is a single phase olivine. 48 . The olivine cathode material of claim 26 , wherein the unit cell volume in Å 3 for one formula unit of olivine lies between 72.633−3.8715y−5.562z+3.172x−0.05 and 72.633−3.8715y−5.562z+3.172x+0.05. 49 . The olivine cathode material of claim 26 , wherein the unit cell volume in Å 3 for one formula unit of olivine lies between 72.633−3.8715y−5.562z+3.172x−0.01 and 72.633−3.8715y−5.562z+3.172x+0.01. 50 . The olivine cathode material of claim 26 , having a BET surface area value >10 m 2 /g.
Assignees
Inventors
Classifications
- H01M4/5825Primary
Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title
- C01B25/45Primary
containing plural metal, or metal and ammonium · CPC title
Positive electrodes · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Li-accumulators · CPC title
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- What does patent US2017225952A1 cover?
- An olivine cathode material having the formula Li a Fe 1−x−y−z Mn x D (y+z) (PO 4 ) c , wherein a, c, x, y and z represent molar amounts, wherein D=Mg and/or Cr, wherein y represent the amount of Mg and z represents the amount of Cr, wherein 1.04<a<1.15; wherein 0.97<(2*c/(a+1))<1.07; wherein 0.6<x<1−y−z; wherein 0<y+z<0.1. These material show improved cathode properties in lithium based rechar…
- Who is the assignee on this patent?
- Umicore Nv, Umicore Korea Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/5825. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Aug 10 2017 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).