公开(公告)号：US20240136534A1

公开(公告)日：2024-04-25

申请号：US17971326

申请日：2022-10-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Diptak BHATTACHARYA ,  Caleb REESE ,  Thomas E. MOYLAN ,  Andrew Clay BOBEL ,  Anil K. SACHDEV

IPC: H01M4/66 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/662 ,  H01M4/0471 ,  H01M4/621 ,  H01M4/669 ,  H01M10/0525 ,  H01M2004/021

Abstract: An electrode assembly includes a current collector, a lithium metal foil, and an alloyed interface that chemically binds the current collector and the lithium metal foil. In certain variations, the alloyed interface includes an intermediate layer disposed between the current collector and the lithium metal foil, a portion of the current collector adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer, and a portion of the lithium metal foil adjacent to the intermediate layer is alloyed with the indium, gallium, or alloy of indium and gallium defining the intermediate layer. In other variations, the alloyed interface includes a copper-lithium alloy.

公开(公告)号：US20230361311A1

公开(公告)日：2023-11-09

申请号：US17737744

申请日：2022-05-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sayed Youssef Sayed NAGY ,  Caleb REESE ,  Andrew Clay BOBEL

IPC: H01M4/66

CPC classification number: H01M4/667 ,  H01M4/661 ,  H01M2004/021

Abstract: The present disclosure provides a lithiophilic-supported current collector for an electrochemical cell that cycles lithium ions. The lithiophilic-supported current collector includes a current collector substrate and a lithiophilic material. The lithiophilic material includes an element selected from the group consisting of: indium, lead, bismuth, gold, and combinations thereof. In certain variations, the lithiophilic material defines a lithiophilic layer disposed on or adjacent to one or more surfaces of the current collector substrate. In other variations, the current collector substrate has one or more porous surfaces and the lithiophilic material coats the one or more porous surfaces.