Method of preparation a battery electrode by spray coating, an electrode and a battery made by method thereof
US-2017229703-A1 · Aug 10, 2017 · US
Sulfur-carbon material composite body, positive electrode material for lithium sulfur secondary batteries, and lithium sulfur secondary battery
US11489152B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11489152-B2 |
| Application number | US-201816614768-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 31, 2018 |
| Priority date | Jun 5, 2017 |
| Publication date | Nov 1, 2022 |
| Grant date | Nov 1, 2022 |
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- Title
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Abstract
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Provided is a sulfur-carbon material composite body which, when used for an electrode of a secondary battery, is unlikely to degrade cycle characteristics at the time of charging and discharging of the secondary battery. Disclosed is a sulfur-carbon material composite body including a first carbon material having a graphene layered structure; a spacer at least partially disposed between graphene layers of the first carbon material or at an end of the first carbon material; and sulfur or a sulfur-containing compound at least partially disposed between the graphene layers of the first carbon material or at the end of the first carbon material.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sulfur-carbon material composite body comprising: a first carbon material having a graphene layered structure; a spacer at least partially disposed between graphene layers of the first carbon material or at an end of the first carbon material; and sulfur or a sulfur-containing compound at least partially disposed between the graphene layers of the first carbon material or at the end of the first carbon material, wherein the first carbon material is partially exfoliated graphite which has a graphite structure and in which an edge portion of graphite is partially exfoliated. 2. The sulfur-carbon material composite body according to claim 1 , wherein a content of the sulfur or sulfur-containing compound in the sulfur-carbon material composite body is 20% by weight or more and 90% by weight or less. 3. The sulfur-carbon material composite body according to claim 1 , wherein a C/O ratio of the first carbon material is 2 or more and 20 or less. 4. The sulfur-carbon material composite body according to claim 1 , wherein the spacer comprises a resin. 5. The sulfur-carbon material composite body according to claim 1 , wherein the spacer comprises a second carbon material different from the first carbon material. 6. A positive electrode material for lithium sulfur secondary batteries, comprising the sulfur-carbon material composite body according to claim 1 . 7. A lithium sulfur secondary battery comprising a positive electrode containing the positive electrode material for lithium sulfur secondary batteries according to claim 6 .
Assignees
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Classifications
Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title
Li-accumulators · CPC title
- H01M4/366Primary
as layered products · CPC title
Graphene · CPC title
Expansion; Exfoliation · CPC title
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- What does patent US11489152B2 cover?
- Provided is a sulfur-carbon material composite body which, when used for an electrode of a secondary battery, is unlikely to degrade cycle characteristics at the time of charging and discharging of the secondary battery. Disclosed is a sulfur-carbon material composite body including a first carbon material having a graphene layered structure; a spacer at least partially disposed between graphen…
- Who is the assignee on this patent?
- Sekisui Chemical Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 01 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).