Battery

摘要

The invention provides a battery, which can improve battery characteristics such as high temperature storage characteristics. The battery comprises a battery device, wherein a cathode and an anode are wound with a separator in between. The anode contains an anode material capable of inserting and extracting Li as an anode active material. An electrolytic solution is impregnated in the separator. The electrolytic solution contains a solvent, and an electrolyte salt such as Li[B(CF3)4] dissolved in the solvent, which is expressed by a chemical formula of Li[B(RF1)(RF2)(RF3)RF4]RF 1, RF 2, RF 3, and RF 4 represent a perfluoro alkyl group whose number of fluorine or carbon is from 1 to 12, respectively. Consequently, high temperature storage characteristics are improved.

主权项

1. A battery comprising:
a cathode; an anode; a separator in-between the cathode and the anode; and a gelatinous electrolyte impregnated in the separator, wherein,
the gelatinous electrolyte comprises an anion expressed by the formula [B(RF1)(RF2)(RF3)RF4], where each of RF1, RF2, RF3, and RF4 represents a perfluoro alkyl group, of the general formula CnF2n+1, where 5≦n ≦12.