公开(公告)号：US20170324077A1

公开(公告)日：2017-11-09

申请号：US15527398

申请日：2014-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianyong Liu ,  Su Xiang Deng ,  Xiaohong Q. Gayden

IPC: H01M4/04 ,  H01M4/66 ,  H01M4/62 ,  H01M4/587 ,  H01M4/485 ,  H01M4/1393 ,  H01M10/0525 ,  H01M4/1391

CPC classification number: H01M4/0423 ,  H01M4/13 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/485 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M4/624 ,  H01M4/625 ,  H01M4/661 ,  H01M4/667 ,  H01M4/668 ,  H01M10/0525

Abstract: Particles of active electrode material for a lithium-ion cell are suspended in an atmospheric plasma-activated gas stream and deposited on a surface of a metal current collector foil having a surface film of an oxide of the metal. The metal oxide film-containing surface of the current collector is pre-coated with a thin layer of an electrically conductive organic polymer composition that serves as a bonding surface for the plasma-applied particles of electrode material. For example, a non-conductive polymer (such as polyvinylidene difluoride) may be filled with carbon particles or copper particles. The polymer layer is typically only a few micrometers in thickness and composed to be compatible with the plasma-applied electrode material particles and to conduct electrons between the oxide film-coated, metal current collector and the deposited electrode layer.

公开(公告)号：US20170301958A1

公开(公告)日：2017-10-19

申请号：US15515646

申请日：2014-10-03

Applicant: Su Xiang DENG ,  GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Su Xiang Deng ,  Xiaohong Q. Gayden

IPC: H01M10/0585 ,  H01M4/1391 ,  H01M4/04 ,  H01M10/0525 ,  H01M2/14

CPC classification number: H01M10/0585 ,  H01M2/0277 ,  H01M2/0285 ,  H01M2/0287 ,  H01M2/145 ,  H01M4/0404 ,  H01M4/1391 ,  H01M10/0404 ,  H01M10/0525

Abstract: Multi-layer lithium-ion cell units for lithium batteries are made using multiple stages of atmospheric plasma spray depositing devices. A suitable substrate layer is conveyed past the respective plasma spray devices to form, in a predetermined sequence, a current collector layer, a particulate electrode material layer, a porous separator layer for a liquid lithium-ion conducting electrolyte, a layer of particulate material for an opposing electrode, and a current collector film for the electrode material. The plasma deposition process allows flexibility and economy in making layered lithium-ion cell units. For example, the multistage process may be conducted in a continuous processing, multi-stage plasma deposition line in which one or more multi-layer cell units may be formed in the line.