Patent ID: 6261712
Filing Date: 2001-07-17
Classification: H01M,Y02E,Y02W

Abstract:
A method of reclaiming a cathodic active material of a lithium ion secondary battery having a casing and a content, said content comprising a cathodic active material represented by the formula LiMO.sub.2, wherein M is a transition metal, comprising the steps of:breaking the lithium ion secondary battery and separating the casing and the content to remove the casing from the content;dissolving the content into a mineral acid to separate a remaining non-dissolved content from the mineral acid, thereby obtaining a liquid comprising the cathodic active material;adding a lithium salt to the liquid; andrecovering the cathodic active material from the liquid by producing a precipitate comprising lithium and the transition metal of the cathodic active material from the liquid; andseparating and calcining the precipitate to reclaim a cathodic active material.