Preparation method of metal-based material-embedded micro-mesoporous carbon composite nanosphere and application method of metal-based material-embedded micro-mesoporous carbon composite nanosphere in lithium-sulfur battery

The invention discloses a preparation method of micro-mesoporous carbon composite nanospheres embedded with a metal-based material. The preparation method comprises the following steps: S1, preparing Ni (OH) 2/PAA-Zn NSs composite nanoparticles by using a template method; and S1, calcining under the protection of argon to obtain the Ni/Ni3ZnC0.7 (at) MMC NSs lithium-sulfur battery host material. By adopting the preparation method of the micro-mesoporous carbon composite nanosphere embedded with the metal-based material, ultra-small Ni/Ni3ZnC0.7 particles of about 25nm are embedded into the micro-mesoporous carbon composite nanosphere, the structure is stable, proper pore channels, large pore volume and high-conductivity specific surface area are provided, the lithium ion transmission distance is greatly reduced, and in addition, the lithium ion transmission efficiency is greatly improved. The synergistic effect of physical limitation and chemical adsorption/catalysis on polysulfide can be realized, and higher