Prof. Juchen Guo and his research team have discovered novel methods that use a liquid reagent to extract close to 100% of the metals lithium (Li), cobalt (Co), nickel (Ni) and manganese (Mn) from LiCoO2 (LCO) and LiNixMnyCo(1-x-y)O2 (NMC) cathodes, efficiently. This low cost process is easy to implement, scale up, low cost and is environmentally friendly.
With the rapid adoption of lithium-ion battery (LiB) technologies, their recycling is also becoming an urgent demand both economically and environmentally. Currently, methods for recycling use either pyrometallurgy or hydrometallurgy. Pyrometallurgy is thermally agressive and requires high energy consumption. Hydrometallurgy methods use organic or inorganic acids to leach the cathode materials. The corrosive reagents are both hazardous and harmful to both people and to the environment.
Prof. Juchen Guo and his team, at UCR, have discovered methods with a liquid reagent that extract Li, Co, Ni and Mn from LCO and NMC cathodes. In this discovery, the LCO and NMC cathodes dissolve in the reagent and produce a supernatant and a precipitate. Processing the supernatant with mild reagents and at mild ambient conditions allows the extraction of Li, Co, Ni and Mn. Close to 100% of the metals are extracted efficiently with this process.
Schematic representation of the lithium-ion battery recycling process
The significant benefits and uniqueness of this invention are:
Eco-friendly recycling of lithium-ion batteries
Please visit Prof. Guo's lab website to learn more about their research
|Patent Cooperation Treaty||Published Application||WO 2023/091287||05/25/2023||2022-855|