公开(公告)号：US20190296333A1

公开(公告)日：2019-09-26

申请号：US16316377

申请日：2016-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianyong LIU ,  Qiang WU ,  Zhiqiang YU

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/505 ,  H01M4/58

Abstract: A lithium-ion battery is disclosed which uses lithium titanate as the anode material in the discharge of the cell(s) of the battery and a mixture of lithium manganese oxide (LMO) with a minor portion of a selected lithium-additional metal element-oxygen compound as the cathode material. The selected lithium compound is compatible with the lithium manganese oxide as a cathode material and has a lower and useful discharge potential than the LMO at the end of the discharge cycle of the cell. The electrode materials are used in combination with a non-aqueous solution of a lithium salt electrolyte. Damage to the electrode materials by over-discharge of the cell can be minimized by utilizing a predetermined portion of the selected lithium compound in mixture with lithium manganese oxide which provides additional capacity for self-discharge of the cell after it has reached a predetermined degree of discharge.

公开(公告)号：US20180331389A1

公开(公告)日：2018-11-15

申请号：US15775696

申请日：2015-11-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing LIU ,  Xiaochao QUE ,  Meiyuan WU ,  Dewen KONG ,  Jianyong LIU ,  Zhiqiang YU ,  Shawn DENG

IPC: H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M10/42 ,  H01M10/0569 ,  H01M2/16

CPC classification number: H01M10/0525 ,  H01M2/162 ,  H01M4/131 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M4/663 ,  H01M4/667 ,  H01M10/0569 ,  H01M10/42 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2010/4292

Abstract: A lithium ion battery is provided that includes: a positive electrode; a negative electrode; and a polymer separator soaked in an electrolyte solution, the polymer separator being disposed between the positive electrode and the negative electrode. The positive electrode includes an active material of lithium manganese oxide, lithium nickel manganese cobalt oxide, or combinations thereof. The negative electrode includes lithium titanate. A method of making the lithium ion battery is also provided.

公开(公告)号：US20200321648A1

公开(公告)日：2020-10-08

申请号：US16906684

申请日：2020-06-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Haijing LIU ,  Zhiqiang YU ,  Jianyong LIU ,  Xiaochao QUE ,  Mark W. VERBRUGGE

IPC: H01M10/04 ,  H01M4/1315 ,  H01G11/26 ,  H01M4/48 ,  H01G11/30 ,  H01G11/50 ,  H01G11/06 ,  H01G11/10 ,  H01G11/28 ,  H01M4/131 ,  H01M4/136 ,  H01M4/485 ,  H01M4/58 ,  H01M4/66 ,  H01M10/0525

Abstract: Electrodes are formed with a porous layer of particulate electrode material bonded to each of the two major sides of a compatible metal current collector. In one embodiment, opposing electrodes are formed with like lithium-ion battery anode materials or like cathode materials or capacitor materials on both sides of the current collector. In another embodiment, a battery electrode material is applied to one side of a current collector and capacitor material is applied to the other side. In general, the electrodes are formed by combining a suitable grouping of capacitor layers with un-equal numbers of anode and cathode battery layers. One or more pairs of opposing electrodes are assembled to provide a combination of battery and capacitor energy and power properties in a hybrid electrochemical cell. The cells may be formed by stacking or winding rolls of the opposing electrodes with interposed separators.