Chip form ultracapacitor
US-12165808-B2 · Dec 10, 2024 · US
Ionic liquids that can be used as part of the electrolyte composition for energy storage devices
US9396884B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9396884-B2 |
| Application number | US-201214237091-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 3, 2012 |
| Priority date | Aug 4, 2011 |
| Publication date | Jul 19, 2016 |
| Grant date | Jul 19, 2016 |
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Abstract
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The present invention relates to ionic liquids comprising, as cation, a specific phosphonium cation, as anion, a formate anion, which can be used, alone or as a mixture, to constitute electrolytes for energy storage devices.
First claim
Opening claim text (preview).
The invention claimed is: 1. An ionic liquid, comprising: as cation, a phosphonium cation; and as anion, a formate anion, wherein: the phosphonium cation satisfies the following generic formula: and R 1 , R 2 and R 3 represent an identical alkyl group and R 4 represents a hydrogen atom, wherein said alkyl group comprises from 1 to 12 carbon atoms. 2. The ionic liquid according to claim 1 , wherein R 1 , R 2 and R 3 represent a tert-butyl group. 3. A composition, comprising: the ionic liquid of claim 1 ; and at least one additive selected from the group consisting of water, an organic solvent, an organic acid and a mixture thereof. 4. The composition according to claim 3 , comprising an aprotic polar solvent as the organic solvent. 5. The composition according to claim 3 , comprising the organic solvent which is selected from the group consisting of a nitrile solvent, a carbonate solvent and a lactone solvent. 6. The composition of claim 3 , comprising acetonitrile as the organic solvent. 7. The composition of claim 3 , comprising a carboxylic acid as the organic acid. 8. The composition according to claim 7 , wherein the carboxylic acid is formic acid. 9. The composition of claim 3 , which is an electrolyte. 10. An energy storage device, comprising at least one cell comprising a positive electrode and a negative electrode separated from each other by a separator comprising, as electrolyte, the ionic liquid of claim 1 . 11. The energy storage device according to claim 10 , which is a supercapacitor. 12. An energy storage device, comprising at least one cell comprising a positive electrode and a negative electrode separated from each other by a separator comprising, as electrolyte, the composition of claim 3 . 13. The energy storage device according to claim 12 , which is a supercapacitor.
Assignees
Inventors
Classifications
- H01G11/58Primary
Liquid electrolytes · CPC title
Electricity · mapped topic
Phosphorus · CPC title
Electricity · mapped topic
Room temperature molten salts comprising at least one organic ion · CPC title
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Frequently asked questions
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- What does patent US9396884B2 cover?
- The present invention relates to ionic liquids comprising, as cation, a specific phosphonium cation, as anion, a formate anion, which can be used, alone or as a mixture, to constitute electrolytes for energy storage devices.
- Who is the assignee on this patent?
- Galiano Herve, Anouti Mérièm, Lemordant Daniel, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H01G11/58. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 19 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).