Non-aqueous electrolyte secondary battery
US-2016190549-A1 · Jun 30, 2016 · US
Separator having a polysulfide barrier layer for lithium-sulfur cells
US10686176B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10686176-B2 |
| Application number | US-201214364402-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 15, 2012 |
| Priority date | Dec 16, 2011 |
| Publication date | Jun 16, 2020 |
| Grant date | Jun 16, 2020 |
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Abstract
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A lithium-sulfur cell includes a lithium-containing anode, a sulfur-containing cathode and a separator arranged between the lithium-containing anode and the sulfur-containing cathode. To suppress a shuttle mechanism and to prevent a loss of active material, the separator includes a base layer and a polysulfide barrier layer. The polysulfide barrier layer is formed on the cathode side of the separator.
First claim
Opening claim text (preview).
The invention claimed is: 1. A lithium-sulfur cell, comprising: a lithium-containing anode; a sulfur-containing cathode; and a separator arranged between the lithium-containing anode and the sulfur-containing cathode, wherein the separator includes a base layer and a polysulfide barrier layer including at least one polymer having polysulfide affinity which forms a reversible ionic bond with a polysulfide and at least one polyolefin-polyether copolymer, the polysulfide barrier layer formed on a side of the separator facing the sulfur-containing cathode. 2. The lithium-sulfur cell of claim 1 , wherein the polysulfide barrier layer includes a mixture of the at least one polymer having polysulfide affinity and at least one polysulfide-tight material. 3. A lithium-sulfur cell, comprising: a lithium-containing anode; a sulfur-containing cathode; and a separator arranged between the lithium-containing anode and the sulfur-containing cathode, the separator including a base layer and a polysulfide barrier layer, the polysulfide barrier layer formed on a side of the separator facing the sulfur-containing cathode from a mixture of at least one polymer having polysulfide affinity and at least one polysulfide-tight material, wherein the polysulfide barrier layer includes at least one polyolefin-polyether copolymer, the polysulfide barrier layer is formed on a side of the separator facing the sulfur-containing cathode, and during a synthesis of the mixture of at least one polymer having polysulfide affinity and at least one polysulfide-tight material, ceramic particles are inserted into a reaction product of the synthesis.
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Classifications
- H01M4/581Primary
Chalcogenides or intercalation compounds thereof · CPC title
comprising layers of only organic material and layers containing inorganic material · CPC title
Ceramics · CPC title
Polyolefins · CPC title
having a layered structure · CPC title
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- What does patent US10686176B2 cover?
- A lithium-sulfur cell includes a lithium-containing anode, a sulfur-containing cathode and a separator arranged between the lithium-containing anode and the sulfur-containing cathode. To suppress a shuttle mechanism and to prevent a loss of active material, the separator includes a base layer and a polysulfide barrier layer. The polysulfide barrier layer is formed on the cathode side of the sep…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification H01M4/581. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 16 2020 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).