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http://dx.doi.org/10.7844/kirr.2015.24.3.44

Ammoniacal Leaching for Recovery of Valuable Metals from Spent Lithium-ion Battery Materials  

Ku, Heesuk (Department of Energy & Mineral Resources Engineering, Sejong University)
Jung, Yeojin (Department of Energy & Mineral Resources Engineering, Sejong University)
Kang, Ga-hee (Department of Energy & Mineral Resources Engineering, Sejong University)
Kim, Songlee (Department of Energy & Mineral Resources Engineering, Sejong University)
Kim, Sookyung (Urban Mine Department, Korea Institute of Geoscience and Mineral Resources)
Yang, Donghyo (Urban Mine Department, Korea Institute of Geoscience and Mineral Resources)
Rhee, Kangin (Urban Mine Department, Korea Institute of Geoscience and Mineral Resources)
Sohn, Jeongsoo (Urban Mine Department, Korea Institute of Geoscience and Mineral Resources)
Kwon, Kyungjung (Department of Energy & Mineral Resources Engineering, Sejong University)
Publication Information
Resources Recycling / v.24, no.3, 2015 , pp. 44-50 More about this Journal
Abstract
Recycling technologies would be required in consideration of increasing demand in lithium ion batteries (LIBs). In this study, the leaching behavior of Ni, Co and Mn is investigated with ammoniacal medium for spent cathode active materials, which are separated from a commercial LIB pack in hybrid electric vehicles. The leaching behavior of each metal is analyzed in the presence of reducing agent and pH buffering agent. The existence of reducing agent is necessary to increase the leaching efficiency of Ni and Co. The leaching of Mn is insignificant even with the existence of reducing agent in contrast to Ni and Co. The most conspicuous difference between acid and ammoniacal leaching would be the selective leaching behavior between Ni/Co and Mn. The ammoniacal leaching can reduce the cost of basic reagent that makes the pH of leachate higher for the precipitation of leached metals in the acid leaching.
Keywords
Spent lithium ion battery; ammoniacal leaching; nickel; cobalt; manganese;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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