公开(公告)号：US20240204192A1

公开(公告)日：2024-06-20

申请号：US18131187

申请日：2023-04-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Dewen KONG ,  Haijing LIU ,  Mengyan HOU ,  Si CHEN ,  Zhixin XU ,  Jun YANG

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38

CPC classification number: H01M4/622 ,  H01M4/0404 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386

Abstract: An electrode for an electrochemical cell includes a silicon-containing electroactive material that includes a plurality of silicon-containing electroactive material particles and a polymeric network that forms polymeric cages around each of the silicon-containing electroactive material particles of the plurality. The polymeric cages include polyacrylic acid (PAA), lithiated polyacrylic acid (PAALi), or a combination of polyacrylic acid (PAA) and lithiated polyacrylic acid (PAALi) covalently bonded with poly(2-hydroxyethyl acrylate) (PHEA). The polymeric network has a mass ratio of the polyacrylic acid (PAA), the lithiated polyacrylic acid (PAALi), or the combination of the polyacrylic acid (PAA) and the lithiated polyacrylic acid (PAALi) to the poly(2-hydroxyethyl acrylate) (PHEA) of greater than or equal to about 0.5 to less than or equal to about 10.