Patent ID: 11967716
Assignee: BEIJING INSTITUTE OF TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  Y | IPC C  H

Claim 0:
1. A sulfide hollow microsphere with enriched sulfur vacancies prepared through the following steps:
1) Dissolving cobalt nitrate and nickel nitrate in a mixed solution of N, N-dimethylformamide and acetone to obtain a solution A;
2) Dissolving a chelating agent with a carboxylate group in the solution A to obtain a solution B;
3) Transferring the solution B into a stainless-steel autoclave lined Teflon and reacting at 140-160° C. for 1-5 h, cooling, centrifuging, washing and drying to obtain a coordination polymer microsphere;
4) Dissolving the coordination polymer microsphere and a sulfurization agent in an organic solvent, reacting at 120-160° C. for 0.5-6 h, cooling, centrifuging, washing and drying to obtain a sulfide hollow microsphere;
5) Dispersing the hollow sulfide microsphere in a sodium borohydride solution, stirring for 0.5-2 h, centrifuging, washing and drying to obtain sulfide hollow microspheres with enriched sulfur vacancies;
wherein a particle size and a shell thickness of the sulfide hollow microsphere are 1-2.5 μm and 15-30 nm, respectively; and
the sulfur vacancies accounts for 45.64% to 65.34% in the sulfide hollow microsphere.