As part of the Recycled Li-ion Battery Cathode and Anode Materials (RecycleMat) project, ZSW has developed a process whereby active materials from used Li-ion batteries can be recycled and used directly in new batteries.
Material powders reactivated with the new process must reach 95 percent of their original capacity. Researchers have already made new battery cells from such recycled material and carried out their electrochemical measurements.
As already mentioned, as part of a project funded by the Ministry of Economy, Labor and Tourism of Baden-Württemberg in the amount of 870,000 euros since August 2020, ZSW has developed a process for separating active materials from the cathode, the positive pole of the battery and the anode, the negative pole, mechanically separated from the used or defective battery electrodes, cleaned and processed into new powders by heat treatment.
The ZSW process for processing cathode materials should essentially match the process for processing graphite and thus avoid "those energy intensive chemical steps".