公开(公告)号：US20230183876A1

公开(公告)日：2023-06-15

申请号：US17995663

申请日：2021-04-09

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Futoshi UTSUNO ,  Satoshi KATSUMATA ,  Tsuyoshi HOSHINO

IPC: C25C7/04 ,  C25C7/02 ,  C25C1/02

CPC classification number: C25C7/04 ,  C25C7/02 ,  C25C1/02

Abstract: A Li ion recovery member and a Li recovery device may prevent occurrence of breakage of a permselective membrane and implement stable Li ion recovery for a long period of time even when a size of a Li recovery device is increased. The Li ion recovery member may include: a permselective membrane including a Li ion conductor made of an inorganic substance; electrodes; and a reticular elastic body, in which the electrodes are provided on at least one main surface side of the permselective membrane, at least one electrode of the electrodes is a porous electrode or a membrane electrode, and the porous electrode or the membrane electrode is sandwiched between the reticular elastic body and the permselective membrane. The Li recovery device may include a Li ion recovery electrolytic cell including the Li ion recovery member and configured to recover Li ions by electrodialysis.

公开(公告)号：US20230406718A1

公开(公告)日：2023-12-21

申请号：US18251338

申请日：2021-11-05

Applicant: IDEMITSU KOSAN CO.,LTD.

Inventor： Daisuke MORI ,  Masashi MACHIDA ,  Futoshi UTSUNO ,  Tsuyoshi HOSHINO

IPC: C01D15/02 ,  H01M10/54 ,  C22B26/12 ,  C22B3/22 ,  B01D9/00

CPC classification number: C01D15/02 ,  H01M10/54 ,  C22B26/12 ,  C22B3/22 ,  B01D9/0004 ,  B01D9/0022 ,  C01P2006/40

Abstract: Provided is a lithium hydroxide production method for producing high-purity lithium hydroxide efficiently and at a lower energy, wherein Li ions alone are recovered in a recovery liquid from a lithium ion extract extracted from a processed member of a lithium secondary battery, using a Li permselective membrane, and lithium hydroxide is produced from the recovery liquid.