Anode for lithium metal battery, and electrochemical device comprising same
US-12176528-B2 · Dec 24, 2024 · US
Porous carbon interlayer for lithium-sulfur battery
US9246149B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9246149-B2 |
| Application number | US-201313955983-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 31, 2013 |
| Priority date | Aug 17, 2012 |
| Publication date | Jan 26, 2016 |
| Grant date | Jan 26, 2016 |
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Abstract
Official abstract text for this publication.
The present disclosure relates to an electrochemical cell including an anode, a sulfur-containing cathode, a lithium-ion-containing electrolyte, and a porous carbon interlayer disposed between the anode and the cathode. The interlayer may be permeable to the electrolyte. The interlayer may be formed from a multiwall carbon nanotube (MWCNT) or a microporous carbon paper (MCP).
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrochemical cell comprising: an anode, a sulfur-containing cathode, a lithium-ion-containing electrolyte, and a free-standing porous multiwall carbon nanotube (MWCNT) carbon interlayer disposed between the anode and the cathode, wherein the interlayer is permeable to the electrolyte and which comprises non-uniform pores of an average size between 50 nm and 100 nm. 2. An electrochemical cell comprising: an anode, a sulfur-containing cathode, a lithium-ion-containing electrolyte, and a free-standing microporous carbon paper (MCP) carbon interlayer disposed between the anode and the cathode, wherein the interlayer is permeable to the electrolyte and comprises uniform pores of an average size of less than 50 nm. 3. The cell of claim 2 , wherein the MCP interlayer comprises uniform pores of an average size of less than 10 nm. 4. The cell of claim 2 , wherein the MCP interlayer comprises uniform pores of an average size of less than 5 nm. 5. The cell of claim 1 , wherein the carbon interlayer is not permeable to electrolyte-soluble polysulfides formed at the sulfur-containing cathode. 6. The cell of claim 2 , wherein the carbon interlayer is not permeable to electrolyte-soluble polysulfides formed at the sulfur-containing cathode. 7. The cell of claim 1 , wherein the anode is a lithium metal anode. 8. The cell of claim 1 , wherein the anode is a carbon anode. 9. The cell of claim 2 , wherein the anode is a lithium metal anode. 10. The cell of claim 2 , wherein the anode is a carbon anode. 11. The cell of claim 1 , further comprising a separator disposed between the carbon interlayer and the anode. 12. The cell of claim 2 , further comprising a separator disposed between the carbon interlayer and the anode. 13. The cell of claim 1 , wherein the cathode has less resistance to charge transfer than a cathode in an otherwise identical cell lacking the carbon interlayer. 14. The cell of claim 2 , wherein the cathode has less resistance to charge transfer than a cathode in an otherwise identical cell lacking the carbon interlayer. 15. The cell of claim 1 , wherein the carbon interlayer comprises absorbed sulfur. 16. The cell of claim 1 , wherein the carbon interlayer comprises absorbed sulfur. 17. The cell of claim 2 , wherein the MCP carbon interlayer comprises carbon nanoparticles between 20 nm and 40 nm in size.
Assignees
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Classifications
- H01M10/052Primary
Li-accumulators · CPC title
Porosity · CPC title
- H01M50/431Primary
Inorganic material · CPC title
- H01M4/38Primary
of elements or alloys · CPC title
Energy storage/generating using nanostructure, e.g. fuel cell, battery · CPC title
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Frequently asked questions
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- What does patent US9246149B2 cover?
- The present disclosure relates to an electrochemical cell including an anode, a sulfur-containing cathode, a lithium-ion-containing electrolyte, and a porous carbon interlayer disposed between the anode and the cathode. The interlayer may be permeable to the electrolyte. The interlayer may be formed from a multiwall carbon nanotube (MWCNT) or a microporous carbon paper (MCP).
- Who is the assignee on this patent?
- Manthiram Arumugam, Su Yu-Sheng, Univ Texas
- What technology area does this patent fall under?
- Primary CPC classification H01M10/052. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 26 2016 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).