새로운 리튬 이온 배터리를 만들기 위해 마모 된 음극 재순환 및 재활용. Posted by batterymanufactory.com
Nanoengineers at the University of California San Diego have developed an energy-efficient recycling process that restores used cathodes from spent lithium ion batteries and makes them work just as good as new. The process involves harvesting the degraded cathode particles from a used battery and then boiling and heat treating them. Researchers built new batteries using the regenerated cathodes. Charge storage capacity, charging time and battery lifetime were all restored to their original levels. This work presents a solution to an environmental concern regarding lithium ion batteries: what to do with them when they wear out. Less than five percent of used lithium ion batteries are recycled today. "Think about the millions of tons of lithium ion battery waste in the future, especially with the rise of electric vehicles, and the depletion of precious resources like lithium and cobalt -- mining more of these resources will contaminate our water and soil. If...