Electrolyte for non-aqueous electrolyte secondary battery

Abstract

As an electrolyte for a lithium ion battery, there is used one in which an inorganic adsorbent is dispersed in a non-aqueous electrolyte. The non-aqueous electrolyte is one having lithium ion conductivity, preferably a mixed solution of a cyclic carbonate such as propylene carbonate (PC) and ethylene carbonate (EC), and a chain carbonate such as dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), diethyl carbonate (DEC) and the like. This solution may optionally be a solution in which a lithium salt, such as lithium hexafluorophosphate or the like, is dissolved as an electrolyte. The inorganic adsorbent to be dispersed in the non-aqueous electrolyte is preferably a Ca-exchanged A-type zeolite or an activated carbon. Such an electrolyte for a lithium ion battery is suitably used for a non-aqueous electrolyte secondary battery such as a lithium ion battery and is capable of highly maintaining the capability of absorbing moisture and gases.

Dependencies are inferred from the claim text.