Preparation of imides containing a fluorosulfonyl group
US-2017047607-A1 · Feb 16, 2017 · US
Salts for multivalent ion batteries
US10020538B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10020538-B2 |
| Application number | US-201514940667-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 13, 2015 |
| Priority date | Nov 13, 2015 |
| Publication date | Jul 10, 2018 |
| Grant date | Jul 10, 2018 |
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Abstract
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Methods for preparing electrolyte salts for alkaline earth metal-ion batteries (e.g., calcium and magnesium ion batteries) are described. The electrolyte salts comprise alkaline earth metal (e.g., Mg or Ca) salts of bis(fluorosulfonyl)imide (FSI) and 3,4-dicyano-2-trifluoromethylimidazole (TDI). The methods comprise contacting FSI or TDI with an alkaline earth metal bis(trifluoroacetate) salt in trifluoroacetic acid.
First claim
Opening claim text (preview).
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A method for preparing an alkaline earth metal salt of bis(fluorosulfonyl)imide (FSI) useful as an electrolyte salt for an alkaline earth metal-ion battery, the method comprising: contacting FSI with a solution containing at least 0.5 molar equivalents of an alkaline earth metal bis-trifluoroacetate salt of the formula (CF 3 CO 2 ) 2 M, dissolved in trifluoroacetic acid to form an FSI salt of formula: wherein M is an alkaline earth metal; and recovering the FSI salt. 2. The method of claim 1 , wherein M is Mg. 3. The method of claim 1 , wherein M is Ca. 4. The method of claim 1 , wherein FSI is contacted with about 0.45 to about 0.75 molar equivalents of the salt of the formula (CF 3 CO 2 ) 2 M. 5. The method of claim 4 , wherein M is Mg. 6. The method of claim 4 , wherein M is Ca. 7. The method of claim 1 , wherein salt of the formula (CF 3 CO 2 ) 2 M, is dissolved in trifluoroacetic acid at a concentration in the range of about 0.05 to about 2 molar. 8. The method of claim 7 , wherein M is Mg. 9. The method of claim 7 , wherein M is Ca. 10. The method of claim 1 , wherein the step of recovering the FSI salt comprises filtration or evaporation of trifluoroacetic acid solvent.
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Classifications
Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title
- H01M10/0568Primary
characterised by the solutes · CPC title
containing one or more sulfur atoms · CPC title
Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals · CPC title
Liquid materials, e.g. for Li-SOCl2 cells · CPC title
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- What does patent US10020538B2 cover?
- Methods for preparing electrolyte salts for alkaline earth metal-ion batteries (e.g., calcium and magnesium ion batteries) are described. The electrolyte salts comprise alkaline earth metal (e.g., Mg or Ca) salts of bis(fluorosulfonyl)imide (FSI) and 3,4-dicyano-2-trifluoromethylimidazole (TDI). The methods comprise contacting FSI or TDI with an alkaline earth metal bis(trifluoroacetate) salt i…
- Who is the assignee on this patent?
- Uchicago Argonne Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0568. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 10 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).