Cathode material for lithium battery

Details Cathode material for lithium battery Cathode material for lithium battery

2006-03-28

2006-03-28

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S594400, C423S594600, C423S599000, C423S600000

Reexamination Certificate

active

07018607

ABSTRACT:
A method is disclosed for synthesizing a crystalline metal oxide powder material containing two or more uniformly distributed metal elements. Crystalline, water containing, oxygen containing inorganic acid salts of the metals are heated to liquefy the salts. The apparent solution contains a uniform mixture of the metal elements. The water is removed from the liquid and the resulting powder calcined in air to decompose the acid salts to a mixed metal crystalline oxide. The method is particularly useful to make doped LiNiO2type crystals using hydrated nitrate or nitrite salts of Li, Ni and the dopant elements. Examples of useful salts are LiNO3.H2O, Ni(NO3)2.6H2O, Co(NO3)2.6H2O, Al(NO3)3.9H2O, and Mg(NO3)2.6H2O.

REFERENCES:
patent: 5985488 (1999-11-01), Mitate et al.
patent: 6054110 (2000-04-01), Yamada et al.
patent: 6071489 (2000-06-01), Sun et al.
patent: 2003/0031930 (2003-02-01), Hamano et al.

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