Researchers at Rice University have reimagined a process they developed a while ago, making it useful for extracting battery materials from electronic waste.
, the scientists explain that flashing powdered anodes from commercial batteries recycles some of what they called the “staggering” accumulation of waste they currently leave behind. In just a few seconds, a jolt of high energy decomposes inorganic salts including lithium, cobalt, nickel and manganese from an anode. These can be recovered by processing them with dilute hydrochloric acid.
According to Tour, flashing anodes degrades the solid-electrolyte interphase , which conducts lithium ions but also insulates the anode from detrimental reactions. The lab estimated it would cost about $118 to recycle one ton of untreated anode waste. They demonstrated that flash-recycled anodes have a recovered specific capacity of 351 milliamp hours per gram at 32 degrees Fahrenheit, superior to the rate performance and electrochemical stability of untreated or calcinated recycled anodes.
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