Retrieving lithium from used batteries

Taking the materials out of batteries is a tricky proposition and no one has yet mastered it. 

But here's a team that is using cooking oil and water to break down the materials and allow for the removal of lithium in a simple, environmentally friendly, quick, and easy way at room temperature.  

We could go further with electric if we didn't have to worry about the environmental impacts of disposed batteries. 

https://tech.yahoo.com/articles/scientists-revolutionary-breakthrough-cooking-oil-111535092.html