Recovering of Valuable Metals from Waste Lithium -ion Batteries

Abstract

Lithium-Ion Batteries (LIB) for Electric Vehicles (EV) and electronics are more and more important due to it is in great demand and its demand growing up very fast in recent years Lithium-ion batteries (LIB) containing cobalt manganese nickel lithium and other valuable metals However there is no waste recycling technology related to waste lithium-ion batteries in Taiwan If we can develop the appropriate technology for recycling and regeneration one of the benefits is that we can reduce the burden of waste on the environment caused by waste lithium batteries on the other hand we can control key resources Based on the environmental impact and safety issues waste lithium ion batteries must be systematic recovery This study developed an effective technical processes of recycling waste Lithium-ion batteries (LIB): 1 Process of safe pretreatment and classification on LIBs includes density separation discharging technology vacuum roasting shredding sieving magnetic separation to separate the cathode and anode material the copper and iron case 2 To extract and refine the valuable metals of cathode materials by hydrometallurgy process including leaching ion exchange and solvent extraction technology to recycle lithium cobalt nickel manganese and other valuable metals from waste EV lithium batteries In addition development technologies such as electrolytic refining to extract the metal to make high-purity of valuable metal products to provided lithium battery manufacturers and the industry to use to reach sustainable resources circulation

Date of Award	2019
Original language	English
Supervisor	Yun-Hwei Shen (Supervisor)