Preparation method, product and application of nitrogen-doped MXene loaded molybdenum disulfide composite material

• Main Authors: CHENG WEIXIANG, MIN YONGGANG
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a preparation method, a product and application of a nitrogen-doped MXene-loaded molybdenum disulfide composite material, and belongs to the technical field of lithium ion battery electrode materials. The composite material is of a Van der Waals heterostructure formed by MoS2 and nitrogen-doped MXene; the preparation method comprises the following steps: dissolving an MXene nanosheet in an acid solution, adding a nitrogen-containing precursor, calcining the obtained precipitate to obtain a nitrogen-doped MXene nanosheet, dispersing the nitrogen-doped MXene nanosheet in water, adding a molybdenum disulfide precursor, and calcining, the composite material prepared by the invention has a relatively large specific surface area, and has extremely high capacity when being used as a lithium ion battery negative electrode material; moS2 and N-MXene form a heterostructure, so that structure collapse in a circulation process can be effectively prevented, and the circulation stability and rate ca