Swedish researchers at Chalmers University of Technology have made a remarkable breakthrough in the recycling of electric vehicle (EV) batteries. Their innovative method enables the recovery of 100% of aluminum and 98% of lithium, potentially revolutionizing the battery recycling industry.

Using an environmentally friendly approach, the scientists have developed a unique process that utilizes oxalic acid, an organic acid derived from plants. Unlike traditional methods that involve the use of expensive or harmful chemicals, this breakthrough technique minimizes the loss of valuable raw materials such as nickel, cobalt, and manganese.

Led by PhD student Léa Rouquette and research leader Martina Petranikova, the team demonstrated the effectiveness of their method in the Chalmers battery recycling lab. By finely grinding the battery components into a black powder and dissolving it in a transparent liquid containing oxalic acid, they successfully separated the aluminum and lithium from other metals present in the batteries.

The researchers believe that the distinct properties of aluminum and lithium make their separation feasible. This new route for battery recycling holds great promise and warrants further exploration, according to Rouquette. Their findings have been published in the journal Separation and Purification Technology.

With the potential to significantly reduce the waste of valuable metals required for the production of new batteries, this breakthrough could contribute to a more sustainable and circular economy. The research team's work has been supported by the Swedish Energy Agency, BASE Batteries Sweden, and Vinnova.