公开(公告)号：US20200028163A1

公开(公告)日：2020-01-23

申请号：US16586478

申请日：2019-09-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhexun YU ,  Yangxing LI

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/1393 ,  H01M4/1395

Abstract: A method for preparing an electrode material, an electrode material, and a battery are provided to resolve a prior-art problem that a silicon negative electrode material in a battery is prone to pulverization in a fully intercalated state. The electrode material includes a layered silicon core and graphene quantum dots. The layered silicon core includes at least two layers of silicon-based materials, an interlayer gap exists between two neighboring layers of the at least two layers of silicon-based materials, and the silicon-based material includes at least one of silicon or an oxide of silicon. The graphene quantum dots are located in the interlayer gap between the at least two layers of silicon-based materials.

公开(公告)号：US20200381715A1

公开(公告)日：2020-12-03

申请号：US16998256

申请日：2020-08-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hang SU ,  Yangxing LI ,  Zhexun YU ,  Pinghua WANG

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/38 ,  H01M10/0525 ,  C23C16/26

Abstract: A composite material and a preparation method thereof are provided to solve the prior-art problem that a silicon anode material used in a battery is prone to cracking and pulverization. The composite material includes a layered silicon core and a plurality of carbon nanotubes. The layered silicon core includes a plurality of silicon-based material layers, and there is an interlayer spacing between two adjacent silicon-based material layers. Each silicon-based material layer has at least one through hole, and the silicon-based material layer includes silicon or silicon oxide. Each of the plurality of carbon nanotubes passes through the through holes on the plurality of silicon-based material layers.