Research progress of lithium recovery for spent lithium-ion batteries and preparation in battery-grade lithium carbonate
With rapidly growing on renewable energy vehicles,there presents a large amount of spent lithium-ion batteries including valuable lithium metals.Lithium recycles and utilizations from the spent batteries can reduce negative environ-ment effect of solid-waste resources,and thus holding a significant contribution in the development for energy and environ-ment applications.Currently,spent lithium-ion batteries comprise with various complex components.Meanwhile,resource re-covery in lithium includes complex processes(dismantling,crushing,sorting,impurity removal,and element synthesis)with low efficiency.Thus,in order to realize efficient lithium recovery and their high-value utilizations,the research on recovery progress were summarized,involving traditional physical treatment,chemical treatment,and direct repair technology for emerging new electrodes.Furthermore,the key technology related to lithium extraction and the preparation in battery-grade lithium carbonate were reviewed,such as recrystallization,causticization,electrochemistry,and carbonation process.In addi-tion,the prospects and challenges for further development of lithium recovery and battery-grade lithium carbonate were pro-posed.
spent lithium-ion power batterieslithium recoverylithium iron phosphateternary cathode materialslithium carbonate
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