公开(公告)号：US11527745B2

公开(公告)日：2022-12-13

申请号：US16559132

申请日：2019-09-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mark W. Verbrugge ,  Xingcheng Xiao ,  Jiagang Xu

IPC: H01M4/131 ,  H01M4/134 ,  H01M4/136 ,  H01M4/133 ,  H01M10/052 ,  H01M4/36 ,  H01M4/38

Abstract: The present disclosure provides methods of compensation for capacity loss resulting from cycle-induced lithium consumption in an electrochemical cell including at least one electrode. Such methods may include adding a lithiation additive to the at least one electrode so as to create a lithium source. The lithium source compensates for cycle-induced lithiation loss such that the electrochemical cell having the lithiation additive experiences total capacity losses of less than or equal to about 5% of an initial capacity prior to cycling of lithium. The lithiation additive includes a lithium silicate represented by the formula LiuHr, where Hr=Liy-uSiOz and where 0≤y≤3.75 and 0≤z≤2 and u is a useable portion of y, 0≤u≤y. The lithium source may include z 4 ⁢ L ⁢ i 4 ⁢ Si ⁢ O 4 and LimSi, where 0≤m≤4.4.

公开(公告)号：US11094998B2

公开(公告)日：2021-08-17

申请号：US16445610

申请日：2019-06-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Jiagang Xu ,  Mei Cai

IPC: H01M2/16 ,  H01M50/431 ,  H01M50/403 ,  H01M50/449 ,  B05D1/12 ,  C04B35/50 ,  H01M10/0525

Abstract: A ceramic-coated separator for a lithium-containing electrochemical cell and methods of preparing the ceramic-coated separator are provided. The ceramic-coated separator may be manufactured by preparing a slurry that includes one or more lithiated oxides and a binder and disposing the slurry onto one or more surfaces of a porous substrate. The slurry may be dried to from a ceramic coating on the one or more surfaces of the porous substrate so as to create the ceramic-coated separator. The ceramic coating may include one or more lithiated oxides selected from Li2SiO3, LiAlO2, Li2TiO3, LiNbO3, Li3PO4, Li2CrO4, and Li2Cr2O7.

公开(公告)号：US20180254449A1

公开(公告)日：2018-09-06

申请号：US15709752

申请日：2017-09-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Jiagang Xu ,  Sherman H. Zeng ,  Mei Cai ,  Mark W. Verbrugge

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

CPC classification number: H01M2/1646 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0525

Abstract: A composite porous separator for an electrochemical cell of a secondary lithium ion battery includes particles of a lithium ion-exchanged zeolite material. The composite porous separator may be manufactured by preparing a slurry comprising a polymeric binder material and the particles of the lithium ion-exchanged zeolite material, and then depositing the slurry on one or more sides of a porous substrate. Thereafter, the slurry may be dried to form a solid microporous active layer on the one or more sides of the substrate.

公开(公告)号：US11417888B2

公开(公告)日：2022-08-16

申请号：US16573605

申请日：2019-09-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng Xiao ,  Jin Liu ,  Jiagang Xu ,  Mei Cai ,  Sherman H. Zeng

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/60 ,  H01M4/137 ,  H01M4/1391 ,  H01M4/1399 ,  H01M4/02

Abstract: An electrode including an electrode active material and a ceramic hydrofluoric acid (HF) scavenger is provided. The ceramic hydrofluoric acid (HF) scavenger includes M2SiO3, MAlO2, M2O—Al2O3—SiO2, or combinations thereof, where M is lithium (Li), sodium (Na), or combinations thereof. Methods of making the electrode are also provided.