| abstract |
【Task】 When dehydrating a non-aqueous electrolyte used in a lithium battery with zeolite, there is a problem of elution of sodium from the zeolite. [Solution] In a zeolite in which 97.5 mol% or more and 99.5 mol% or less of exchangeable cations are ion-exchanged with lithium, the non-aqueous electrolyte can be dehydrated at an elution of cation impurities such as sodium of 50 ppm or less. As the zeolite species, at least one zeolite selected from the group consisting of A-type, chabasite, ferrierite, ZSM-5, and clinoptilolite can be used. [Selection figure] None |