公开(公告)号：US20240128432A1

公开(公告)日：2024-04-18

申请号：US18532918

申请日：2023-12-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuxi ZHANG ,  Shaohua AI ,  Xin ZHOU ,  Yu CHEN ,  Qi ZENG

IPC: H01M4/04 ,  C23C14/16 ,  C23C14/24 ,  C23C14/58 ,  H01M4/1395 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/0423 ,  C23C14/16 ,  C23C14/24 ,  C23C14/5806 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/1395 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present application provides a method for preparing a prelithiated positive electrode current collector, the method comprising the following steps: gasifying a lithium source in an evaporation chamber filled with a protective gas; enabling an aluminum foil layer to pass through the evaporation chamber and depositing the metal lithium on a surface of the aluminum foil layer by means of vapor deposition; and transferring the aluminum foil layer deposited with the metal lithium to an annealing chamber filled with a protective gas and performing high-temperature annealing to form a lithium-aluminum alloy layer on the surface of the aluminum foil layer.