Cathode materials for lithium-ion secondary cells

Details Cathode materials for lithium-ion secondary cells Cathode materials for lithium-ion secondary cells

1997-08-04

2000-01-25

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429223, H01M 402

Patent

active

060176547

ABSTRACT:
Crystalline lithiated transition metal oxide materials having a rhombohedral R-3m crystal structure includes divalent cations selected and added in amounts so that all or a portion of the divalent cations occupy sites in transition metal atom layers within the materials' crystal lattice. The lithiated transition metal oxides are useful as cathode materials in lithium-ion secondary cells. The materials include, but are not limited to, Li.sub.1+x Ni.sub.1-y M.sub.y N.sub.x O.sub.2(1+x) and Li.sub.1 Ni.sub.1-y M.sub.y N.sub.x O.sub.p, wherein M is a transition metal selected from titanium, vanadium, chromium, manganese, iron, cobalt, and aluminum, and N is a group II element selected from magnesium, calcium, strontium, barium, and zinc. The materials provide improved cyclability and high voltage capacity as cathodes in lithium-ion secondary cells. Processes for producing the divalent cation-containing lithium transition metal oxide materials of the invention are also disclosed.

REFERENCES:
patent: 4308299 (1981-12-01), Arendt
patent: 4336315 (1982-06-01), Eda et al.
patent: 4770960 (1988-09-01), Nagaura et al.
patent: 4802958 (1989-02-01), Mazanac et al.
patent: 4992342 (1991-02-01), Singh et al.
patent: 5028500 (1991-07-01), Fong et al.
patent: 5114811 (1992-05-01), Ebel et al.
patent: 5168019 (1992-12-01), Sugeno
patent: 5264201 (1993-11-01), Dahn et al.
patent: 5356731 (1994-10-01), Sitters et al.
patent: 5589287 (1996-12-01), Hatoh et al.
patent: 5591543 (1997-01-01), Peled et al.
patent: 5609975 (1997-03-01), Hasegawa et al.
patent: 5648057 (1997-07-01), Ueda et al.
patent: 5672446 (1997-09-01), Barker et al.
patent: 5679481 (1997-10-01), Takanishi et al.
patent: 5700598 (1997-12-01), Denis
patent: 5759717 (1998-06-01), Amine et al.
patent: 5783332 (1998-07-01), Amine et al.
R. J. Gummow, et al., "Improved Capacity Retention in Rechargeable 4V Lithium/Lithium-Maganese Oxide (Spinel) Cells," Solid State Ionics, vol. 69, pp. 59-67 (1994).
K. Brandt, Solid State Ionics, 69, (1994), pp. 173-183.
A. Hirano et al., "Relationship between non-Stoichiometry and Physical Properties in LiNiO.sub.2," Solid State Ionics, 78 (1995).
A. R. Armstrong and P. Bruce, "Synthesis of layered LiMNO.sub.2 as an electrode for rechargeable lithium batteries", Nature, vol. 38 (Jun. 6, 1996), pp. 499-500.

Affiliated with

Also associated with

Rating

Cathode materials for lithium-ion secondary cells does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cathode materials for lithium-ion secondary cells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode materials for lithium-ion secondary cells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2314578