公开(公告)号：US20240243249A1

公开(公告)日：2024-07-18

申请号：US18355289

申请日：2023-07-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Meiyuan WU ,  Haijing LIU ,  Hui HE ,  Shubha NAGESWARAN

IPC: H01M4/134 ,  H01M4/133 ,  H01M4/525 ,  H01M4/62 ,  H01M4/80

CPC classification number: H01M4/134 ,  H01M4/133 ,  H01M4/525 ,  H01M4/623 ,  H01M4/80 ,  H01M2004/027

Abstract: A negative electrode for an electrochemical cell that cycles lithium includes a negative electrode including an electroactive material layer disposed on a current collector that has lithiated silicon oxide (LSO) negative electroactive material at ≥ about 10 weight % to ≤ about 30 weight % of a total weight of the electroactive material layer and a carbonaceous negative electroactive material, such as graphite. An electrochemical cell that incorporates such a negative electrode may also include a second electrode comprising a porous positive active material layer comprising a positive lithium containing, nickel-rich electroactive material, such as a lithium nickel manganese cobalt aluminum oxide, a porous separating layer disposed between the first electrode and the second electrode and an electrolyte disposed in pores of the separating layer.