摘要 :
A new LiCoO_2 recovery technology of Li-ion battery was studied. LiCoO_2 was initially separated from the Al foil with dimethyl acetamide(DMAC), and then the polyvinylidene fluoride(PVDF) and carbon powders in the active material ...
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A new LiCoO_2 recovery technology of Li-ion battery was studied. LiCoO_2 was initially separated from the Al foil with dimethyl acetamide(DMAC), and then the polyvinylidene fluoride(PVDF) and carbon powders in the active material were eliminated by high temperature calcining. The content of the elements in the recovered powder was analyzed. The structure and morphology of the resulted samples were observed by XKD and SEM. Then the Li_2CO_3 was added in the recycled powder to adjust the Li/Co molar ratio to 1. The new LiCoO_2 was synthesized by calcining at 850 deg C for 12 h in air. The well-crystallized single phase LiCoO_2 without CO_3O_4 phase was obtained. The recycle-synthesized LiCoO_2 powders have good characteristics as a cathode active material in terms of charge-discharge capacity and cycling performance.
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