Chemistry of inorganic compounds – Carbon or compound thereof – Oxygen containing
Reexamination Certificate
2004-07-30
2008-10-14
Hendrickson, Stuart (Department: 1793)
Chemistry of inorganic compounds
Carbon or compound thereof
Oxygen containing
C252S518100, C252S519120, C252S519140, C252S519150, C429S223000
Reexamination Certificate
active
07435402
ABSTRACT:
A number of materials with the composition Li1+xNiαMnβCoγM′δO2−zFz(M′=Mg,Zn,Al,Ga,B,Zr,Ti) for use with rechargeable batteries, wherein x is between about 0 and 0.3, α is between about 0.2 and 0.6, β is between about 0.2 and 0.6, γ is between about 0 and 0.3, δ is between about 0 and 0.15, and z is between about 0 and 0.2. Adding the above metal and fluorine dopants affects capacity, impedance, and stability of the layered oxide structure during electrochemical cycling. Another aspect of the invention includes materials with the composition Li1+xNiαCoβMnγM′δOyFz(M′=Mg,Zn,Al,Ga,B,Zr,Ti), where the x is between 0 and 0.2, the α between 0 and 1, the β between 0 and 1, the γ between 0 and 2, the δ between about 0 and about 0.2, the y is between 2 and 4, and the z is between 0 and 0.5.
REFERENCES:
patent: 6677082 (2004-01-01), Thackeray et al.
patent: 6680143 (2004-01-01), Thackeray et al.
Ohzuku et al., “Layered Lithium Insertion Material of LiNi½Mn½O2: A Possible Alternative to LiCoO2for Advanced Lithium-Ion Batteries”, Chemistry Letters, 2001, pp. 744-745, The Chemical Society of Japan.
Lu et al., “Layered Cathode Materials Li[NixLi(⅓- 2x/3)Mn(⅔- x/3)]O2for Lithium-Ion Batteries,” Electrochemical and Solid State Letters, 2001, pp. A191-A194, vol. 4 (11), The Electrochemical Society, Inc.
Lu et al., “Understanding the Anomalous Capacity of Li/Li[NixLi(⅓- 2x/3)Mn(⅔- x/3)]O2Cells Using In Situ X-Ray Diffraction and Electrochemical Studies”, Journal of The Electrochemical Society, 2002, pp. A815-A822, vol. 149 (7), The Electrochemical Society, Inc.
Kim et al., “Layered xLiMO2•(1−x)Li2M′O3Electrodes for Lithium Batteries: A Study of 0.95LiMn0.5O2•0.05Li2TiO3”, Elsevier Science B.V., 2002, pp. 205-209, vol. 4, Electrochemistry Communications.
Amine Khalil
Kang Sun-Ho
Foley & Lardner LLP
Hendrickson Stuart
U Chicago Argonne LLC
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