Importance

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Abstract

According to the present disclosure, a recovery efficiency of Li from a recovery object such as a used lithium ion secondary battery can be improved. The manufacture method disclosed herein includes a preparation step S11 of preparing a recovery object containing at least Li, and a chlorination heating step S12 of heating the recovery object together with a non-metal chlorine compound to produce LiCl. Since LiCl is soluble in water, Li can be easily recovered from the recovery object. That means, the technology disclosed herein makes it possible to separate Li from the recovery object immediately after the chlorination heating step S12, contributing to significant improvement of Li recovery efficiency.

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First Claim