| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery excellent in safety by containing a radical capturing agent in a secondary battery using a positive electrode, a negative electrode and nonaqueous electrolyte. SOLUTION: For example, besides hindered amine and the like, hindered phenol and the like and hydroquinone and the like used without being particularly limited, an ultraviolet ray absorbent is also suitably used as a radical capturing agent. An adding quantity of the radical capturing agent becomes different by a battery internal part to be added, but 0.1 to 30% is used in the weight ratio to an electrode such as positive electrode and a negative electrode, electrolyte or a separator or the like. Preferably, it is set to 1 to 20%. When it is little, an effect is hardly obtained, and when it is too much, there is a case where charge-discharge performance of a battery become insufficient. An Li compound such as metallic Li and Li alloy, a carbon material capable of doping an Li ion, a transition metal compound or the like can be cited as a negative electrode active material used in a secondary battery. |
