Method for recoverying negative electrode material from waste lithium cell


Application Number: 00108958
Application Date: 2000.05.24
Publication Number: 1275821
Publication Date: 2000.12.06
Priority Information: 1999/5/28 DE 199 24 707.2
International: H01M6/52;H01M10/54
Applicant(s) Name: Merck Patent GmbH
Address:
Inventor(s) Name: M. Schmid;R. P. Hammo;M. Wolfat-Malant
Patent Agency Code: 11038
Patent Agent: long chuangong
Abstract A process for recycling electrode materials from spent lithium batteries in which negative-electrode materials from the lithium/transition-metal mixed oxide class of compounds from discharged, spent lithium batteries can, after comminution of the electrode constituents, be re-synthesized into chemically identical products as employed for the production of the batteries comprising mechanical and extractive processing of these constituents with the aim of removing positive-electrode constituents and other secondary constituents, such as binders and other processing auxiliaries, followed by controlled high-temperature treatment without leaving thermal decomposition products behind.