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US5631104A
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High voltage insertion compounds for lithium batteries
Assignee: NEC Moli Energy Canada Ltd
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Filing: 1996-01-11
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Granted: 1997-05-20
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Expires: 2016-01-11
Abstract
Abstract Insertion compounds having the formula Li x+y M z Mn 2-y-z O 4 wherein the crystal structure is spinel-like, M is a transition metal, 0≦x<1, 0≦y<0.33, and 0<z< about 1, can reversibly insert significant amounts of lithium at potentials greater than about 4.5 volts versus Li/Li + . In particular, M can be Ni or Cr. The reversible amount of lithium at such voltages can be greater for greater values of z. Such insertion compounds are suitable cathode materials for high voltage lithium batteries.
Inventors
- 👤 Qiming Zhong
- 👤 Arman Bonakdarpour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:42
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M4/505; H01M4/62; H01M4/621; H01M4/622; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0569; H01M10/058; H01M10/0587; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M2300/0028; H01M2300/0037; H01M2300/004; H01M4/13; H01M4/131; H01M4/485; H01M4/52; H01M4/525; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
87 words
A lithium insertion compound having the formula Li x+y M z Mn 2-y-z O 4 wherein the insertion compound has a spinel-like crystal structure, M is a transition metal, x is a number greater than or equal to zero and less than 1, y is a number greater than or equal to zero and less than 0.33, z is a number greater than zero and less than about 1, and the potential of the lithium insertion compound is greater than about 4.5 volts versus Li/Li + .
Claim 2
Dependent Claim
87 words
A lithium insertion compound having the formula Li x+y M z Mn 2-y-z O 4 wherein the insertion compound has a spinel-like crystal structure, M is a transition metal, x is a number greater than or equal to zero and less than 1, y is a number greater than or equal to zero and less than 0.33, z is a number greater than zero and less than about 1, and the potential of the lithium insertion compound is greater than about 4.5 volts versus Li/Li + .
Claim 3
Dependent Claim
12 words
An insertion compound as claimed in claim 1 wherein M is nickel.
Claim 4
Dependent Claim
15 words
An insertion compound as claimed in claim 2 wherein z is less than about 0.5.
Claim 5
Dependent Claim
15 words
An insertion compound as claimed in claim 3 wherein z is greater than about 0.3.
Claim 6
Dependent Claim
12 words
An insertion compound as claimed in claim 1 wherein M is chromium.
Claim 7
Dependent Claim
15 words
An insertion compound as claimed in claim 5 wherein z is greater than about 0.5.
Claim 8
Dependent Claim
13 words
An insertion compound as claimed in claim 1 wherein y is about 0.1.
Claim 9
Dependent Claim
109 words
A lithium battery comprising a lithium compound anode; an electrolyte comprising a solvent and a lithium salt; and a cathode comprising a lithium insertion compound having the formula Li x+y M z Mn 2-y-z O 4 wherein the lithium insertion compound has a spinel-like crystal structure, M is a transition metal, x is a number greater than or equal to zero and less than 1, y is a number greater than or equal to zero and less than 0.33, z is a number greater than zero and less than about 1, and the potential of the lithium insertion compound is greater than about 4.5 volts versus Li/Li + .
Claim 10
Dependent Claim
109 words
A lithium battery comprising a lithium compound anode; an electrolyte comprising a solvent and a lithium salt; and a cathode comprising a lithium insertion compound having the formula Li x+y M z Mn 2-y-z O 4 wherein the lithium insertion compound has a spinel-like crystal structure, M is a transition metal, x is a number greater than or equal to zero and less than 1, y is a number greater than or equal to zero and less than 0.33, z is a number greater than zero and less than about 1, and the potential of the lithium insertion compound is greater than about 4.5 volts versus Li/Li + .
Claim 11
Dependent Claim
15 words
A lithium battery as claimed in claim 8 wherein the lithium compound anode is carbonaceous.
Claim 12
Dependent Claim
16 words
A lithium battery as claimed in claim 8 wherein the lithium salt is LiBF 4 .
Claim 13
Dependent Claim
17 words
A lithium battery as claimed in claim 8 wherein the solvent comprises ethylene carbonate and diethyl carbonate.
Claim 14
Dependent Claim
16 words
A lithium battery as claimed in claim 11 wherein the solvent additionally comprises ethyl methyl carbonate.
Claim 15
Dependent Claim
12 words
A lithium battery as claimed in claim 8 wherein M is nickel.
Claim 16
Dependent Claim
15 words
A lithium battery as claimed in claim 13 wherein z is less than about 0.5.
Claim 17
Dependent Claim
15 words
A lithium battery as claimed in claim 13 wherein z is greater than about 0.3.
Claim 18
Dependent Claim
12 words
A lithium battery as claimed in claim 8 wherein M is chromium.
Claim 19
Dependent Claim
15 words
A lithium battery as claimed in claim 16 wherein z is greater than about 0.5.
Claim 20
Dependent Claim
13 words
A lithium battery as claimed in claim 8 wherein y is about 0.1.
Claim 21
Dependent Claim
48 words
A lithium battery as claimed in claim 8 wherein the cathode is formed in the battery by extracting lithium electrochemically from a precursor cathode comprising a precursor insertion compound, the precursor insertion compound having the formula Li 1+y M z Mn 2-y-z O 4 a spinel crystal structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-19 | 2000-11-18 | 2001-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-19 | 2004-11-18 | 2005-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-19 | 2008-11-18 | 2009-05-20 | $7700.00 | Window Closed / Lapsed |