| 摘要 |
PROBLEM TO BE SOLVED: To suppress reaction of a negative electrode and water in a nonaqueous electrolyte at charge time and attain improvement of storage characteristic, by adding an additive agent, containing at least one kind of polystyrene and polybutadiene, in the nonaqueous electrolyte, in a nonaqueous electrolyte battery. SOLUTION: In a nonaqueous electrolyte battery having a positive electrode, negative electrode and a nonaqueous electrolyte, an additive agent containing at least one kind of polystyrene and polybutadiene is added by a range of about 40.0 to 60.0wt.% in the nonaqueous electrolyte. Polystyrene and polybutadiene in the additive agent are made to surround water in the nonaqueous electrolyte, probability of a negative electrode or the like into contact with water in the nonqueous electrolyte to cause reaction at charge time is decreased, a self discharge is suppressed during storage, decreasing of a battery capacity is decreased, a storage characteristic is improved. In this nonaqueous electrolyte battery, as a positive electrode material, a publicly known metal compound capable of storing/releasing a lithium ion can be used. |
