公开(公告)号：US20230411610A1

公开(公告)日：2023-12-21

申请号：US17840928

申请日：2022-06-15

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC分类号： H01M4/38 ,  H01M4/36

CPC分类号： H01M4/386 ,  H01M4/366 ,  H01M2004/027

摘要： 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.