Preparation method and application of lithium-sulfur battery three-dimensional carbon current collector
A lithium-sulfur battery and current collector technology, applied in the field of electrochemical batteries, to achieve the effects of improving cycle stability, inhibiting migration, and having good cycle stability
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Examples
Embodiment 1
[0054] The preparation method of the lithium-sulfur battery three-dimensional carbon current collector of this embodiment includes the steps of: soaking the organic foam material polyurethane foam material in organic solvent ethylene glycol for 6 hours, then ultrasonically treating it for 0.5 hour, washing it with distilled water for 3 times, and placing it in a vacuum In a drying oven, dry at 60°C for 12 hours to obtain a carbon precursor. Under the protection of nitrogen atmosphere, the carbon precursor was heated up to 800°C at a heating rate of 5°C / min, kept for 2 hours, and cooled to room temperature naturally. After taking it out, it was cut to a suitable size with a cutting machine to obtain an elastic lithium-sulfur battery. Three-dimensional carbon current collector. The compressibility of the above polyurethane foam was 60%.
[0055] The three-dimensional carbon current collector for lithium-sulfur batteries in this embodiment is the three-dimensional carbon current...
Embodiment 2
[0066] The preparation method of the lithium-sulfur battery three-dimensional carbon current collector of this embodiment comprises the steps of: soaking the organic foaming material polyurethane foam with the organic solvent acetone for 3 hours, then ultrasonically treating it for 0.5 hour, washing it with distilled water for 3 times, and placing it in a vacuum drying oven , and dried at 120°C for 8h to obtain a carbon precursor. Under the protection of nitrogen atmosphere, the carbon precursor was heated up to 900°C at a heating rate of 5°C / min, kept for 4 hours, and cooled to room temperature naturally. After taking it out, it was cut to a suitable size with a cutting machine to obtain an elastic lithium-sulfur battery. Three-dimensional carbon current collector. The compressibility of the polyurethane foam mentioned above was 90%.
[0067] The three-dimensional carbon current collector for lithium-sulfur batteries in this embodiment is the three-dimensional carbon current...
Embodiment 3
[0077] The preparation method of the lithium-sulfur battery three-dimensional carbon current collector of this embodiment comprises the steps of: soaking the organic foaming material melamine foam in the organic solvent ethylene glycol for 6 hours, then ultrasonically treating it for 0.5 hours, washing it with distilled water for 3 times, and placing it in a vacuum-dried In an oven, dry at 60°C for 12 hours to obtain a carbon precursor. Under the protection of nitrogen atmosphere, the carbon precursor was heated up to 800°C at a heating rate of 5°C / min, kept for 2 hours, and cooled to room temperature naturally. After taking it out, it was cut to a suitable size with a cutting machine to obtain an elastic lithium-sulfur battery. Three-dimensional carbon current collector. The compressibility of the above-mentioned melamine foam material is 90%.
[0078] The three-dimensional carbon current collector for lithium-sulfur batteries in this embodiment is the three-dimensional carb...
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Description
Claims
Application Information
- IPC
- H01M4/66; H01M4/139; H01M4/1393; H01M4/1397; H01M10/052; H01M10/058
- CPC
- H01M4/139; H01M4/1393; H01M4/1397; H01M4/663; H01M10/052; H01M10/058; Y02E60/10; Y02P70/50
- Inventors
- 曹朝霞; 张俊