公开(公告)号：US12297518B2

公开(公告)日：2025-05-13

申请号：US17719080

申请日：2022-04-12

Applicant: Worcester Polytechnic Institute

Inventor： Yan Wang ,  Jiahui Hou ,  Xiaotu Ma ,  Jinzhao Fu

IPC: C22B26/12 ,  A63B24/00 ,  C01D15/08 ,  C22B3/06 ,  G16H20/30 ,  H01M10/54

Abstract: Lithium recycling from expended Li-Ion batteries occurs thought selective recovery of lithium charge materials from a recycling stream including transition metals used for the charge material. Li recovery includes dissolving the lithium based charge material in an organic acid having a resistance or lack of affinity to dissolution of transition metals, and distilling a leach solution formed from the dissolved charge material for generating a powder including lithium and trace impurities of the transition metals. Sintering of the generated powder forms lithium carbonate and carbonates of the trace impurities that eluded the selective leach, however, since the trace impurities are insoluble in water, the lithium carbonate is recoverable by water washing.

公开(公告)号：US20220325378A1

公开(公告)日：2022-10-13

申请号：US17719080

申请日：2022-04-12

Applicant: Worcester Polytechnic Institute

Inventor： Yan Wang ,  Jiahui Hou ,  Xiaotu MA ,  Jinzhao Fu

IPC: C22B26/12 ,  C22B3/06 ,  H01M10/54 ,  C01D15/08

Abstract: Lithium recycling from expended Li-Ion batteries occurs thought selective recovery of lithium charge materials from a recycling stream including transition metals used for the charge material. Li recovery includes dissolving the lithium based charge material in an organic acid having a resistance or lack of affinity to dissolution of transition metals, and distilling a leach solution formed from the dissolved charge material for generating a powder including lithium and trace impurities of the transition metals. Sintering of the generated powder forms lithium carbonate and carbonates of the trace impurities that eluded the selective leach, however, since the trace impurities are insoluble in water, the lithium carbonate is recoverable by water washing.