Waxberry derived carbon/Ni-MnS/CNT composite electrode material and preparation method and application thereof

• Main Authors: YAO ZHUJUN, SHEN SHENGHUI, CHEN YANBIN, YANG YEFENG
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to the technical field of lithium-sulfur battery positive electrode materials, and discloses a waxberry derived carbon/Ni-MnS/CNT composite electrode material and a preparation method and application thereof. According to the material, a composite structure of waxberry derived carbon and Ni-MnS nanoparticles is constructed in situ by combining a hydrothermal reaction method with a freeze-drying method, and the waxberry derived carbon/Ni-MnS/CNT three-dimensional porous composite material is obtained by sintering into a phase in an inert atmosphere and promoting generation of carbon nanotubes in a reducing atmosphere. According to the material, the physical confinement effect on polysulfide can be greatly improved, meanwhile, the volume expansion of the material is slowly released, electrochemical reaction kinetics is enhanced, and the in-situ compounded Ni-MnS nanoparticles can effectively enhance the chemical adsorption and catalytic conversion effect on the polysulfide. When the materi