US Patent No: 6,277,521
Number of patents in Portfolio can not be more than 2000
Lithium metal oxide containing multiple dopants and method of preparing same
Stats
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Aug 21, 2001
Issued date -
May 14, 1998
filing date -
09/078,849
serial no -
In Force
status
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Abstract
The present invention provides a multiple-doped lithium metal oxide and a method of preparing same for use in the positive electrodes of lithium and lithium ion batteries. The intercalation compound of the invention has the formula LiNi.sub.1-x Co.sub.y M.sub.a M'.sub.b O.sub.2, wherein M is selected from the group consisting of Ti, Zr, and combinations thereof, and M' is selected from the group consisting of Mg, Ca, Sr, Ba, and combinations thereof. The elements in the compounds are present such that x=y+a+b, x is from greater than 0 to about 0.5, y is from greater than 0 to about 0.5, a is from greater than 0 to about 0.15, and b is from greater than 0 to about 0.15.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,478,671 Nonaqueous secondary battery | 61 | 1993 | |
| 5,478,673 Nonaqueous secondary battery | 69 | 1993 | |
| 5,478,674 Nonaqueous electrolyte-secondary battery | 68 | 1994 | |
| 5,487,960 Nonaqueous secondary battery | 29 | 1995 | |
| 5,686,203 Non-aqueous secondary battery | 41 | 1995 | |
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| 5,425,932 Method for synthesis of high capacity Li.sub.x Mn.sub.2 O.sub.4 secondary battery electrode compounds | 61 | 1993 | |
| 5,506,077 Manganese oxide cathode active material | 35 | 1993 | |
| 5,429,890 Cathode-active material blends of Li.sub.x Mn.sub.2 O.sub.4 | 56 | 1994 | |
| 5,700,598 Method for preparing mixed amorphous vanadium oxides and their use as electrodes in reachargeable lithium cells | 21 | 1996 | |
| 5,674,645 Lithium manganese oxy-fluorides for li-ion rechargeable battery electrodes | 34 | 1996 | |
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| 5,677,087 Method for manufacturing positive electrode material for a lithium battery | 43 | 1996 | |
| 5,759,717 Method for manufacturing a positive electrode active material for lithium battery | 24 | 1996 | |
| 5,783,332 Positive electrode active material for lithium battery and a method for manufacturing the same | 31 | 1996 | |
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| 5,084,366 Non-aqueous electrolyte secondary cell | 32 | 1990 | |
| 5,147,738 Nonaqueous electrolyte secondary battery | 17 | 1990 | |
| 5,609,975 Positive electrode for non-aqueous electrolyte lithium secondary battery and method of manufacturing the same | 51 | 1995 | |
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| 5,618,640 Nonaqueous secondary battery | 45 | 1994 | |
| 5,780,181 Nonaqueous secondary battery | 32 | 1996 | |
| 5,965,293 Nonaqueous secondary battery | 25 | 1998 | |
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| 5,180,574 Hydrides of lithiated nickel dioxide and secondary cells prepared therefrom | 34 | 1992 | |
| 5,518,842 Inverse spinel compounds as cathodes for lithium batteries | 25 | 1994 | |
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| 5,286,582 Monaqueous electrolyte secondary battery and process for producing positive active materials | 57 | 1991 | |
| 5,620,812 Non-aqueous electrolyte secondary battery | 30 | 1995 | |
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| 4,770,960 Organic electrolyte cell | 30 | 1987 | |
| 5,168,019 Nonaqueous electrolyte secondary battery | 49 | 1992 | |
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| 4,668,595 Secondary battery | 118 | 1986 | |
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| 6,017,654 Cathode materials for lithium-ion secondary cells | 53 | 1997 | |
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| 4,567,031 Process for preparing mixed metal oxides | 76 | 1983 | |
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| 5,672,446 Lithium ion electrochemical cell | 31 | 1996 | |
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| 5,264,201 Lithiated nickel dioxide and secondary cells prepared therefrom | 130 | 1990 | |
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| 4,507,371 Solid state cell wherein an anode, solid electrolyte and cathode each comprise a cubic-close-packed framework structure | 80 | 1983 | |
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| 6,124,707 Tester for peripheral storage device | 53 | 1997 | |
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| 5,900,385 Nickel--containing compounds useful as electrodes and method for preparing same | 32 | 1997 | |
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| 5,370,949 Materials for use as cathodes in lithium electrochemical cells | 36 | 1993 | |
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| 5,169,736 Electrochemical secondary element | 84 | 1991 | |
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| 5,478,675 Secondary battery | 35 | 1994 | |
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| 5,783,333 Lithium nickel cobalt oxides for positive electrodes | 81 | 1996 | |
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| 5,591,543 Secondary electrochemical cell | 15 | 1995 | |
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| 8,138,649 Magnet support and retention system for hybrid rotors | 7 | 2007 | |
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| 5,750,288 Modified lithium nickel oxide compounds for electrochemical cathodes and cells | 32 | 1995 | |
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| 6,071,645 Lithium electrode for a rechargeable electrochemical cell | 26 | 1996 | |
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| 8,138,669 Double-emission organic light emitting diode display device | 7 | 2009 | |
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| 5,478,672 Nonaqueous secondary battery, positive-electrode active material | 44 | 1994 | |
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| 5,595,842 Lithium secondary battery having a cathode containing galliam | 13 | 1995 | |
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| 5,503,930 Layer structure oxide | 17 | 1994 | |
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| 5,648,057 Process for producing LiM.sup.3+ O.sub.2 or LiMn.sub.2 O.sub.4 and LiNi.sup.+ O.sub.2 for use in positive electrode of secondary battery | 30 | 1995 | |
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| 6,080,510 Ternary mixed lithium oxides, process for preparing the same, and secondary lithium battery formed therefrom | 15 | 1997 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 21, 2013 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |