Sulfur composite cathode material and preparation method and application thereof
US10727480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sulfur composite cathode material and a preparation method thereof. After a sulfur-containing suspension is mixed with a host material, the isolated sulfur of large particles is transformed into a uniform sulfur coating on the surface of the host material through the “solid-liquid-solid” phase transition process of elemental sulfur. The organic solvent is removed to obtain a sulfur composite cathode material; and the host material comprises a carbon material. By utilizing the dissolving-precipitating balance of the elemental sulfur in the selected organic solvent, through the strong interaction between the carbon material and the elemental sulfur dissolved in the organic solvent, the sulfur dissolved in the solution is continuously deposited on the surface of the host material, and the undissolved sulfur particles is continuously dissolved in the organic solvent, and then continuously deposited on the surface of the sulfur-carrying material, so as to obtain a uniform sulfur composite cathode material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.