NONAQUEOUS ELECTROLYTE BATTERY AND ITS MANUFACTURE

• Main Authors: KODAMA YASUNOBU, UBUKAWA SATOSHI, YOSHIDA ICHIRO, NAKANE IKURO, IMACHI NAOKI
• Format: Patent
• Language: English
• Published: 18.07.2000
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte battery increased in the actuating voltage, superior in discharging characteristics at a low temperature, reduced in gas generation, and superior in safety by constituting a positive electrode material of Ti mixed LiCoO2 formed by sticking titanium particles and/or titanium compound particles on the surface of lithium cobaltate. SOLUTION: Ti mixed LiCoO2 is formed by at least sticking titanium particles and/or titanium compound particles on the surface of lithium cobaltate, and the titanium particles, etc., decompose a coating derived from nonaqueous solvent formed as surrounding the positive electrode active material or act as accelerating the peeling of the formed coating. This constitution can thus suppress lowering of the discharge performance caused of inferiority of ion conductivity, and improve the consequent large-scale drop of the discharging capacity in low-temperature actuation. Moreover, the Ti mixed LiCoO2 has high heat generation start temperature compared with solid solution of titanium/ lithium cobaltate so as to improve the safety against ignition, etc.