公开(公告)号：US11322743B2

公开(公告)日：2022-05-03

申请号：US16172852

申请日：2018-10-28

Applicant: Ningde Amperex Technology Limited

Inventor： Peng Du ,  Yuansen Xie ,  Yisong Su ,  Fan Yang

IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/587 ,  H01M4/36 ,  H01M4/48 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  H01M4/02

Abstract: The present application relates to a negative electrode composite material and preparation thereof and a lithium ion battery. The negative electrode composite material comprises an active material, a metal oxide on the surface of the active material, wherein the ratio of the specific surface area of the negative electrode composite material to the specific surface area of the active material is 1-7. The present application improves the volume energy density and safety performance of a lithium ion battery by selecting a ratio of a specific surface area of the negative electrode composite material to the active material.

公开(公告)号：US20230006215A1

公开(公告)日：2023-01-05

申请号：US17941124

申请日：2022-09-09

Applicant: Ningde Amperex Technology Limited

Inventor： Maohua Chen ,  Yuansen Xie ,  Peng Du

IPC: H01M4/66 ,  H01M4/133

Abstract: A negative electrode plate includes a current collector and an active layer. The active layer includes a porous carbon framework and includes silicon nanoparticles and lithium metal that are located in the porous carbon framework. Embodiments of this application reduce the volume change of the negative electrode plate during cycles, suppress growth of lithium dendrites, improve safety of the lithium-ion battery, and achieve a higher energy density of the battery that contains the negative electrode plate.

公开(公告)号：US20200036004A1

公开(公告)日：2020-01-30

申请号：US16172852

申请日：2018-10-28

Applicant: Ningde Amperex Technology Limited

Inventor： Peng Du ,  Yuansen Xie ,  Yisong Su ,  Fan Yang

IPC: H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/583 ,  H01M4/04

Abstract: The present application relates to a negative electrode composite material and preparation thereof and a lithium ion battery. The negative electrode composite material comprises an active material, a metal oxide on the surface of the active material, wherein the ratio of the specific surface area of the negative electrode composite material to the specific surface area of the active material is 1-7. The present application improves the volume energy density and safety performance of a lithium ion battery by selecting a ratio of a specific surface area of the negative electrode composite material to the active material.