Nonaqueous electrolyte secondary battery
US-2018287120-A1 · Oct 4, 2018 · US
Method for manufacture of sulfur-carbon composite
US11289696B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11289696-B2 |
| Application number | US-201816649873-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 16, 2018 |
| Priority date | Nov 21, 2017 |
| Publication date | Mar 29, 2022 |
| Grant date | Mar 29, 2022 |
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Abstract
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A method for manufacturing a sulfur-carbon composite including the following steps of: (a) drying a porous carbon material; and (b) adding sulfur to the porous carbon material resulting from the drying of step (a), and mixing the sulfur and porous carbon material by a ball milling process and then heating the resulting ball milled product.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for manufacturing a sulfur-carbon composite comprising the following steps of: (a) drying a porous carbon material; and (b) adding sulfur to the porous carbon material resulting from the drying of step (a), and mixing the sulfur and porous carbon material by a ball milling process and then heating the resulting ball milled product, wherein the drying of step (a) results in porous carbon material having a moisture content of 50 ppm or less. 2. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein the porous carbon material comprises at least one selected from the group consisting of graphite, graphene, carbon black, carbon nanotube, carbon fiber and activated carbon. 3. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein the drying of step (a) is conducted at a temperature of 100° C. to 150° C. for 6 hours to 36 hours. 4. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein the ball milling process of step (b) is conducted at 100 rpm to 500 rpm for 30 minutes to 5 hours. 5. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein the heating of step (b) is conducted at a temperature of 130° C. to 170° C. 6. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein in step (b), the sulfur and the porous carbon material are mixed at a weight ratio of 9:1 to 5:5. 7. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein a weight of the mixture of the sulfur and the porous carbon material mixed in step (b) is 10 g or more. 8. The method for manufacturing the sulfur-carbon composite of claim 1 , wherein sulfur of Rosickyite phase is contained in the sulfur-carbon composite in an amount of more than 0 wt % and less than 10 wt %. 9. The method for manufacturing the sulfur-carbon composite of claim 8 , wherein the sulfur-carbon composite further comprises (a) sulfur of α-phase, (b) sulfur of β-phase, or (c) sulfur of α-phase and sulfur of β-phase.
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Classifications
Surface area · CPC title
Electric properties · CPC title
Li-accumulators · CPC title
- C01B32/21Primary
After-treatment · CPC title
Energy storage using batteries · CPC title
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- What does patent US11289696B2 cover?
- A method for manufacturing a sulfur-carbon composite including the following steps of: (a) drying a porous carbon material; and (b) adding sulfur to the porous carbon material resulting from the drying of step (a), and mixing the sulfur and porous carbon material by a ball milling process and then heating the resulting ball milled product.
- Who is the assignee on this patent?
- Lg Chemical Ltd, Lg Energy Solution Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01B32/21. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 29 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).