公开(公告)号：US20200020996A1

公开(公告)日：2020-01-16

申请号：US16582557

申请日：2019-09-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huihui Zhou ,  Yangxing Li ,  Chenguang Liu ,  Guocheng Xu

IPC: H01M10/654 ,  H01M4/62 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/42

Abstract: An electrode material layer includes an electrode active material and graphene of a sheet-like structure, a surface of the graphene is modified with magnetic response nanodots, and in the graphene, more than 50% of the graphene is arranged at an angle of 45° to 90° with respect to a surface, of the current collector, on which the electrode material layer is disposed, to form a heat conduction path having a specific orientation.

公开(公告)号：US11349163B2

公开(公告)日：2022-05-31

申请号：US16582557

申请日：2019-09-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huihui Zhou ,  Yangxing Li ,  Chenguang Liu ,  Guocheng Xu

IPC: H01M4/133 ,  H01M4/1393 ,  H01M10/654 ,  H01M4/62 ,  H01M10/42

Abstract: An electrode material layer includes an electrode active material and graphene of a sheet-like structure, a surface of the graphene is modified with magnetic response nanodots, and in the graphene, more than 50% of the graphene is arranged at an angle of 45° to 90° with respect to a surface, of the current collector, on which the electrode material layer is disposed, to form a heat conduction path having a specific orientation.

公开(公告)号：US10862167B2

公开(公告)日：2020-12-08

申请号：US16171983

申请日：2018-10-26

Applicant: Huawei Technologies Co., Ltd. ,  DONGGUAN AISIPU ENERGY TECHNOLOGY CO., LTD.

Inventor： Guocheng Xu ,  Fengchao Xie ,  Rui Xu ,  Hui Li

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/42

Abstract: The present application provides a high-temperature lithium-ion battery electrolyte, including a lithium salt, an organic solvent, and a water removal additive. A structural formula of the water removal additive is shown as a formula (1): where R1 is a —NCH—(CH2)n—CN group, and 0

公开(公告)号：US20220255055A1

公开(公告)日：2022-08-11

申请号：US17733167

申请日：2022-04-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hang Su ,  Guocheng Xu ,  Pinghua Wang ,  Yangxing Li

IPC: H01M4/134 ,  H01M4/62 ,  H01M10/0525

Abstract: Embodiments of the present invention provide a negative electrode material, including a doped silicon-based material. The doped silicon-based material includes a silicon-based material and doping metal elements distributed inside particles of the silicon-based material. The silicon-based material includes nano-silicon or silicon monoxide. A doping amount of the doping metal elements ranges from 1 ppm to 1000 ppm. The negative electrode material is obtained by doping metal elements with an extreme low content into a crystal structure of the silicon-based material, to maintain stability of an original crystal structure of the silicon-based material while improving conducting performance of the silicon-based material. Therefore, an energy density of a cell can be effectively improved, and the silicon-based material is not prone to be pulverized in a charging/discharging process. The embodiments of the present invention further provide a production method of the negative electrode material, a lithium-ion battery, and a terminal.