US 2024/0194874 A1Published application

Negative electrode for lithium/sodium ion battery without surface lithium/sodium deposition phenomena and preparation method thereof

AssigneeYangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China

InventorsJingze LI, Zhicui SONG, Zihao WANG, Xiaohui LV, Jianxiong XING

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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.

Claims11

Dependent claims

A negative electrode for a lithium/sodium ion battery without surface lithium/sodium deposition phenomena, comprising:

a negative electrode of a commercial lithium/sodium ion battery and an electron insulating modification layer confined conformally coated thereon;
the negative electrode of the commercial lithium/sodium ion battery comprises a metal current collector, and a composite layer of the negative electrode;
the electron insulating modification layer has a thickness of 10-1000 nm, and is conformally coated on a surface of powder particles of the upper layer in the composite negative electrode, wherein the electron insulating modification layer is a porous thin film, and serves as an insulating shell for the powder particles in upper layer of the composite negative electrode.

Dependencies are inferred from the claim text.