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Nitrogen-sulfur-carbon nanocomposites and their application as cathode materials in lithium-sulfur batteries
US10044039B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10044039-B2 |
| Application number | US-201615248349-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 26, 2016 |
| Priority date | Nov 21, 2012 |
| Publication date | Aug 7, 2018 |
| Grant date | Aug 7, 2018 |
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- Title
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- Abstract
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Abstract
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The invention is directed in a first aspect to electron-conducting porous compositions comprising an organic polymer matrix doped with nitrogen atoms and having elemental sulfur dispersed therein, particularly such compositions having an ordered framework structure. The invention is also directed to composites of such S/N-doped electron-conducting porous aromatic framework (PAF) compositions, or composites of an S/N-doped mesoporous carbon composition, which includes the S/N-doped composition in admixture with a binder, and optionally, conductive carbon. The invention is further directed to cathodes for a lithium-sulfur battery in which such composites are incorporated.
First claim
Opening claim text (preview).
What is claimed is: 1. An electron-conducting porous composition comprising an organic polymer matrix having an ordered framework structure in which nitrogen atoms are interconnected by phenylene linkers, wherein said ordered framework structure contains micropores in which sulfur is incorporated, wherein said sulfur is incorporated in the micropores of said electron-conducting porous composition in an amount of at least 20% and up to 50% by weight of the electron-conducting porous composition. 2. The composition of claim 1 , wherein the ordered framework structure is comprised of interconnected triphenylamine units. 3. The composite of claim 1 , wherein the ordered framework structure possesses a surface area of at least 300 m 2 /g. 4. The composite of claim 1 , wherein the ordered framework structure possesses a surface area of at least 300 m 2 /g and up to 2500 m 2 /g. 5. The composite of claim 1 , wherein said sulfur is incorporated in the micropores of said electron-conducting porous composition in an amount of at least 30% and up to 50% by weight of the electron-conducting porous composition.
Assignees
Inventors
Classifications
Positive electrodes · CPC title
Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title
Carbon or graphite · CPC title
Electrodes based on electro-active polymers · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US10044039B2 cover?
- The invention is directed in a first aspect to electron-conducting porous compositions comprising an organic polymer matrix doped with nitrogen atoms and having elemental sulfur dispersed therein, particularly such compositions having an ordered framework structure. The invention is also directed to composites of such S/N-doped electron-conducting porous aromatic framework (PAF) compositions, o…
- Who is the assignee on this patent?
- Ut Battelle Llc, Ut Batelle Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M4/602. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 07 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).