Lithium anode and preparation method thereof

• Main Authors: HUANG PENGCHENG, GONG YI, ZHOU QIAN, QIN SHIBIAO, TU FEIYUE, HE TETE, CAO JINGCHAO, ZHUANG ZILONG, DENG ZHIYUAN, KUANG LIPING, JU BOWEI
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention discloses an lithium anode. The lithium anode comprises a lithium anode substrate, a poly(1, 3-dioxolane) layer is polymerized on the surface of the lithium anode substrate in situ, and graphite-phase carbon nitride nanosheets are uniformly distributed in the poly (1, 3-dioxolane) layer. The preparation method comprises the following steps: adding graphite-phase carbon nitride nanosheet powder into 1, 3-dioxolane for dispersion to prepare a graphite-phase carbon nitride nanosheet dispersion liquid; and adding an initiator into the graphite-phase carbon nitride nanosheet dispersion liquid, dropwise coating the surface of the lithium negative electrode matrix with the initiator, and carrying out in-situ polymerization on the 1, 3-dioxolane on the surface of the lithiumanode to obtain the lithium negative electrode with the composite interface layer. According to the invention, the 1, 3-dioxolane is polymerized on the surface of the lithium anode matrix in situ in an in-situ polymerization