Highly homogeneous spinal Li.sub.1+x Mn.sub.2-x O.sub.4+y interc

Details Highly homogeneous spinal Li.sub.1+x Mn.sub.2-x O.sub.4+y interc Highly homogeneous spinal Li.sub.1+x Mn.sub.2-x O.sub.4+y interc

1996-06-18

1998-02-17

Skapars, Anthony

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

429224, C01G 4512, H01M 450

Patent

active

057188777

ABSTRACT:
A novel method of preparing a spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compound with low lattice distortion and a highly ordered and homogeneous structure for 4 V secondary lithium and lithium ion cells is provided. The method of preparing the spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compound comprises providing a spinel Li.sub.1+X Mn.sub.2-X O.sub.4 intercalation compound having a lithium to manganese mole ratio of between about 1.02:2 and 1.1:2 and firing the spinel at different temperature ranges with corresponding gas flow rates to form the spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compounds. The spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compounds have a mean X value of between about 0.01 and 0.05, a mean Y value of between about -0.02 and 0.04 and a full width at half maximum of the x-ray diffraction peaks at a diffraction angle 2.theta. of planes (400) and (440) using CuK.alpha..sub.1 rays of between about 0.08.degree. and 0.13.degree.. The spinel Li.sub.1+X Mn.sub.2-X O.sub.4+Y intercalation compounds may be used in the positive electrodes of secondary lithium and lithium ion cells to provide cells having high specific capacities and long cycling lives.

REFERENCES:
patent: 4246253 (1981-01-01), Hunter
patent: 4246324 (1981-01-01), de Nora et al.
patent: 4312930 (1982-01-01), Hunter
patent: 4366215 (1982-12-01), Coetzer et al.
patent: 4448856 (1984-05-01), Zuckerbrod et al.
patent: 4507371 (1985-03-01), Thackeray et al.
patent: 4546058 (1985-10-01), Charkey et al.
patent: 4599157 (1986-07-01), Suzuki et al.
patent: 4731309 (1988-03-01), Hoffman
patent: 4732741 (1988-03-01), Duncan et al.
patent: 4749634 (1988-06-01), Sammells
patent: 4828834 (1989-05-01), Nagaura et al.
patent: 4946664 (1990-08-01), Van Zyl et al.
patent: 4956247 (1990-09-01), Miyazaki et al.
patent: 4975346 (1990-12-01), Lecerf et al.
patent: 5023155 (1991-06-01), Charkey et al.
patent: 5030523 (1991-07-01), Neat et al.
patent: 5110696 (1992-05-01), Shokoohi et al.
patent: 5135732 (1992-08-01), Barboux et al.
patent: 5153081 (1992-10-01), Thackeray et al.
patent: 5166012 (1992-11-01), Roussouw et al.
patent: 5169736 (1992-12-01), Bittihn et al.
patent: 5192629 (1993-03-01), Guyomard et al.
patent: 5196278 (1993-03-01), Idota
patent: 5240794 (1993-08-01), Thackeray et al.
patent: 5244757 (1993-09-01), Takami et al.
patent: 5266299 (1993-11-01), Tarascon
patent: 5288474 (1994-02-01), Reichert et al.
patent: 5290592 (1994-03-01), Izuchi et al.
patent: 5312611 (1994-05-01), Takami et al.
patent: 5316875 (1994-05-01), Murai et al.
patent: 5389467 (1995-02-01), Herr et al.
patent: 5415957 (1995-05-01), Okada et al.
patent: 5425932 (1995-06-01), Tarascon
patent: 5429890 (1994-07-01), Pynenburg et al.
patent: 5443929 (1995-08-01), Yamamoto et al.
patent: 5449577 (1995-09-01), Dahn et al.
patent: 5462820 (1995-10-01), Tanaka
patent: 5474959 (1995-12-01), Schafer et al.
patent: 5478671 (1995-12-01), Idota
patent: 5478672 (1995-12-01), Mitate
patent: 5478673 (1995-12-01), Funatsu
patent: 5478675 (1995-12-01), Nagaura
patent: 5478676 (1995-12-01), Turi et al.
patent: 5487960 (1996-01-01), Tanaka
patent: 5489492 (1996-02-01), Asami et al.
patent: 5494762 (1996-02-01), Isoyama et al.
patent: 5496664 (1996-03-01), Sterr
patent: 5506077 (1996-04-01), Koksbang
patent: 5601952 (1997-02-01), Dasgupta et al.
Lithium Insertion Into Manganese Spinels, M.M. Thackeray, et al.; Mater. Res. Bull., vol. 18, (1983) pp. 461-472. No Month.
Improved Capacity Retention in Rechargeable 4 V Lithium/Lithium-Manganese Oxide (Spinel) Cells; Gummow et al.; Solid State Ionics 69 (1994). No Month.
Crystallographic And Magnetic Properties Of Several Spinels Containing Trivalent JA-1044 Manganese; D.G. Wickham and W.J. Croft; J. Phys. Chem. Solids, vol. 7, (1958) pp. 351-360.
Rechargeable Lithium Battery With Spinel-Related .lambda.-MnO.sub.2 ; I. Synthesis of .lambda.-MnO.sub.2 for Battery Applications; Journal of Power Sources, 43-44 (1993) pp. 551-559. No Month.
Rechargeable Lithium Battery With Spinel-Rlated MnO.sub.2 ; II. Optimizationof the LiMn.sub.2 O.sub.4 Synthesis Conditions; Momchilov et al.; Journal of Power Sources, 41 (1993) pp. 305-314.
The Chemistry Of LiMn.sub.2 O.sub.4 Formation; W. F. Howard, Jr. No Date.
Rechargable Lithium Battery With Spinel-Related .lambda.-MnO.sub.2 ; Part III. Scaling-Up Problems Associated With LiMn.sub.2 O.sub.4 Synthesis; V. Manev et al.; Journal of Power Sources, (1995) pp. 1-6. No Month.

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