Mild solvent extracts cobalt from batteries

University researchers in Texas are developing a nontoxic leaching solution to recover cobalt and lithium from end-of-life batteries.

Two Rice University scientists have formulated a solvent that can extract material from the cathodes used in lithium-ion batteries. The solution is termed a “deep eutectic solvent” and is made from choline chloride and Ethylene glycol. It has been shown to recover a “significant” amount of cobalt from used batteries, according to a university release.

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