Cathode active material, cathode including the cathode active material, and sodium secondary battery including the cathode
US-2015111097-A1 · Apr 23, 2015 · US
Electrolyte for batteries with regenerative solid electrolyte interface
US9722277B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9722277-B2 |
| Application number | US-201414530562-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 31, 2014 |
| Priority date | Oct 31, 2014 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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Abstract
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An energy storage device comprising: an anode; and a solute-containing electrolyte composition wherein the solute concentration in the electrolyte composition is sufficiently high to form a regenerative solid electrolyte interface layer on a surface of the anode only during charging of the energy storage device, wherein the regenerative layer comprises at least one solute or solvated solute from the electrolyte composition.
First claim
Opening claim text (preview).
What is claimed is: 1. A battery device comprising: an anode comprising graphite; a cathode comprising sulfur; and an electrolyte composition selected from: (i) a solute comprising lithium bis(trifluoromethanesulphonyl) imide and a solvent comprising 1,3-dioxolane, wherein the solute concentration in the electrolyte composition is at least 3M, as measured by moles of solute divided by the volume of the solvent without considering the volume change of the electrolyte composition after dissolving the solute; (ii) a solute comprising lithium bis(trifluoromethanesulphonyl) imide and a solvent comprising 1,2-dimethoxyethane, wherein the solute concentration in the electrolyte composition is at least 7M, as measured by moles of solute divided by the volume of the solvent without considering the volume change of the electrolyte composition after dissolving the solute; or (iii) a solute selected from lithium bis(trifluoromethanesulphonyl) imide, LiPF 6 , or LiClO 4 , and a solvent comprising propylene carbonate, wherein the solute concentration in the electrolyte composition is at least 5M, as measured by moles of solute divided by the volume of the solvent without considering the volume change of the electrolyte composition after dissolving the solute. 2. A method comprising: cycling the battery device of claim 1 ; and forming a regenerative layer on a surface of the anode only during charging of the battery device, wherein the regenerative layer comprises at least one solute from the electrolyte composition. 3. The battery device of claim 1 , wherein the electrolyte composition is the electrolyte composition (i). 4. The battery device of claim 1 , wherein the electrolyte composition is the electrolyte composition (ii). 5. The battery device of claim 1 , wherein the electrolyte composition is the electrolyte composition (iii). 6. The battery device of claim 3 , wherein the solvent consists of 1,3-dioxolane. 7. The battery device of claim 1 , wherein the device undergoes charge/discharge cycles without significant decline in specific capacity over at least 100 cycles. 8. The battery device of claim 1 , wherein the regenerative solid electrolyte interface layer does not include any products from decomposition of the electrolyte solute. 9. The battery device of claim 1 , wherein the electrolyte composition does not include ethylene carbonate.
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Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title
characterised by the solvents · CPC title
of elements or alloys · CPC title
for inserting or intercalating light metals · CPC title
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- What does patent US9722277B2 cover?
- An energy storage device comprising: an anode; and a solute-containing electrolyte composition wherein the solute concentration in the electrolyte composition is sufficiently high to form a regenerative solid electrolyte interface layer on a surface of the anode only during charging of the energy storage device, wherein the regenerative layer comprises at least one solute or solvated…
- Who is the assignee on this patent?
- Battelle Memorial Institute
- What technology area does this patent fall under?
- Primary CPC classification H01M10/056. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 01 2017 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).