公开(公告)号：US20240194874A1

公开(公告)日：2024-06-13

申请号：US18387238

申请日：2023-11-06

Applicant: Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China

Inventor： Jingze LI ,  Zhicui SONG ,  Zihao WANG ,  Xiaohui LV ,  Jianxiong XING

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/04 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/583 ,  H01M4/0404 ,  H01M4/0423 ,  H01M4/0428 ,  H01M4/623 ,  H01M4/625 ,  H01M4/628 ,  H01M2004/021 ,  H01M2004/027 ,  H01M10/0525

Abstract: Disclosed is a negative electrode for a lithium/sodium ion battery and a preparation method therefor, belonging to the field of metal ion battery. The negative electrode includes an electron insulating modification layer and a conventional negative electrode for a lithium/sodium ion battery; the electron insulating modification layer is confinedly coated on the surface of the conventional negative electrode for the lithium/sodium ion battery, forming a porous thin film; and the conventional negative electrode for the lithium/sodium ion battery includes a metal current collector and a powder composite layer of negative electrode, including an active material, a conductive additive, and a binder.

公开(公告)号：US20200381705A1

公开(公告)日：2020-12-03

申请号：US16955064

申请日：2019-09-20

Applicant: University of Electronic Science and Technology of China

Inventor： Jingze LI ,  Weishang JIA ,  Zeyu YAO ,  Yuchi LIU ,  Siji QU ,  Chao LI

IPC: H01M4/04 ,  H01M4/38 ,  H01M10/0525 ,  C22C1/02

Abstract: A method for preparing a lithium alloy as an anode material includes the following steps: heating lithium metal into a molten state in an environment with a dew point not higher than −50° C. and an oxygen content not higher than 10 ppm; adding a transition metal to the molten lithium metal, maintaining the temperature for 5-15 minutes, and uniformly mixing to form a molten alloy; cooling the molten alloy to room temperature to obtain the lithium alloy as the anode material. The preparation method of the present invention is simple and feasible with less cost. The prepared lithium alloy as the anode material can effectively improve the coulombic efficiency and cycle lifespan of the lithium battery.