Earth, Atmosphere & Environment Sciences


Recovery of Lithium, Nickel, Cobalt, Manganese, and Graphite from Spent/Used/Discarded Lithium-ion Batteries of Mixed Chemistries


Chemical Sciences, Earth, Atmosphere & Environment Sciences

Focus Area:

Recovery of Elements

Social Benefits:

Technology can extract critical elements like Lithium, Cobalt, and Nickel apart from manganese as salts in the most desired marketable form, with holistic recycling to result in reusable graphite

Developing Agency:

CSIR-National Metallurgical Laboratory (NML), Jharkhand

Technology Readiness Index:

Technology Development

Website Link :
Source (more info) :

Brief Description

Description :

With acid leaching using 20-30% solids, 94-96% Li, Co, Ni, and Mn, was extracted. The leach liquor was subjected to selective sequential multi-stage solvent extraction and precipitation route to extract >96-99.9% multiple variant pure salts of lithium, nickel, cobalt, and manganese. High pure graphite is a derivative product of the process. The process enables the recovery of acid and reagents. Complete separation among Li, Ni, Co, and Mn . Chemistry of Batteries Tested: LCO, LCA, LMO, NMC, NCA 96-99.9% pure multiple variant salts as products . No impurity of Fe, Al, and Cu in any critical metal product Aluminum, Copper: 99% recovery . Total recycling of reagents with 85% recovery of acid . Residual carbon is converted to High Pure Graphite . Easily replicable on a large scale . Easily replicable on a large scale

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