公开(公告)号：US20240234695A9

公开(公告)日：2024-07-11

申请号：US17971301

申请日：2022-10-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jeffrey David CAIN ,  Nicholas Paul William PIECZONKA ,  Anil K. Sachdev

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/58

CPC classification number: H01M4/366 ,  H01M4/0459 ,  H01M4/58 ,  H01M2004/021

Abstract: An electroactive material for an electrochemical cell that cycles lithium ions is provided. The electroactive material includes a plurality of atomic layers and a plurality of cations disposed between the atomic layers. The plurality of atomic layers includes an atom selected from the group consisting of: silicon, germanium, boron, and combinations thereof. The plurality of cations is selected from the group consisting of: calcium, magnesium, zinc, copper, nickel, potassium, sodium, and combinations thereof. A ratio of the cations to atoms that define the atomic layer may be less than about 1:2.

公开(公告)号：US20230411610A1

公开(公告)日：2023-12-21

申请号：US17840928

申请日：2022-06-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yuntao GU ,  Jeffrey David CAIN ,  Sayed Youssef Sayed NAGY ,  Nicholas Paul William PIECZONKA ,  Thomas E. MOYLAN

IPC: H01M4/38 ,  H01M4/36

CPC classification number: H01M4/386 ,  H01M4/366 ,  H01M2004/027

Abstract: The present disclosure provides a method for forming a pre-lithiated layered anode material. The method includes removing cations from a precursor material including a layered ionic compound to form creates a two-dimensional structure that defines a layered anode material. The method further includes inserting lithium ions using an anion insertion wet-chemical process into the layered anode materials to form the pre-lithiated layered anode material. The anion insertion wet-chemical process can be the same as or different form the cation extraction wet-chemical process. In each instance, the precursor material is be represented by MX2, where M is one of calcium (Ca) and magnesium (Mg) and X is one of silicon (Si), germanium (Ge), and boron (B) and the precursor material has alternating layers of M and X.