During the self-reduction roasting of graphite anode, the addition of Na2SO4 transformed Li from Li2CO3 to LiNaSO4 with higher solubility and also prevented the overreduction of Ni and Co oxides to the metallic states, which are prone to the deterioration of their acid leaching performance. Subsequently, >95% Ni, >99% Mn and >99% Co were leached by H2SO4 solution without additional reductant. >85% Li was selectively extracted from the roasted product by water leaching. The NCM cathode was transformed into water-soluble LiNaSO4 and acid-dissolved divalent oxides of (NiO)m(MnO)n and CoO based on the synergy between self-reduction of graphite anode and Na2SO4 roasting. All rights reserved.A novel process was developed for the selective extraction of Li and efficient leaching of transition metals (TMs) from spent LiNixCoyMnzO2 (NCM) batteries coupled with the synergistic disposal of Na2SO4 byproducts generated from lithium battery industry. IMPORTANT: You must include your IP address, otherwise we won't know which address to unblock! You can check your actual IP address (as seen by the outside world) using a free service such as Ĭopyright © 2022 CrystalMaker Software Ltd. Please contact us to request that we unblock your access. Have we made a mistake? If you believe we have mistakenly blocked your access, we apologise. You, or another user with the same IP address, has been detected posting spam, attempting to hack this site, or making a denial-of-service attempt. So please purchase the appropriate licence(s) from us, and delete any stolen software from your computer.

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