Chinese researchers claim to have developed a process to recover nearly all of the lithium from used electric vehicle batteries for recycling.
The Independent (via InsideEVs) reports on study results first published in the German academic journal Angewandte Chemie claiming recovery of 99.99% of lithium from a used battery, as well as 97% of nickel 92% of cobalt, and 91% of manganese.
The process used, called “neutral leaching” also eliminates harsh chemicals, increasing safety and lowering environmental impact, researchers claim—and in laboratory tests it took just 15 minutes to separate out the desired battery materials.
Volkswagen battery recycling
Current recycling processes use amino acids, and here study researchers used glycine, which is the simplest stable amino acid, along with a follow-up process to avoid further chemical reactions once the lithium and other materials were extracted.
Laboratory research does not always scale to commercial viability, but battery recycling has attracted interest from automakers looking to avoid the cost and the environmental impact of mining new raw materials for batteries.
Toyota and Redwood Materials battery recycling
Toyota announced an agreement to utilize Redwood Materials, the battery-recycling firm founded by former Tesla CTO JB Straubel, in 2022. The following year, it expanded that agreement, setting the stage for batteries from hybrids like the Prius to provide material for future EV batteries as those vehicles reach the end of their useful lives.
Other automakers, including BMW, Ford, and Volkswagen Group’s VW and Audi brands, have also signed on with Redwood. But the fleet takes a long time to turn over, and the relatively small number of EVs and hybrids on the road could translate to a long wait for a critical mass of recyclable battery materials—with one 2021 report predicting that the market for these materials won’t heat up until 2030.