Liquid Electrolyte Composition, and Electrochemical Cell Comprising Said Electrolyte Composition
US-2024347772-A1 · Oct 17, 2024 · US
Non-aqueous electrolyte for power storage device, and power storage device
US2021119255A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021119255-A1 |
| Application number | US-201917042241-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 21, 2019 |
| Priority date | May 31, 2018 |
| Publication date | Apr 22, 2021 |
| Grant date | — |
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Abstract
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Disclosed is a non-aqueous electrolytic solution for an energy storage device, including a non-aqueous solvent, an electrolyte salt, a first additive consisting of a sulfolane compound represented by the following formula (1), and a second additive which is at least one selected from the group consisting of a cyclic sulfuric ester compound represented by the following formula (2a) and a dinitrile compound represented by the following formula (2b):
First claim
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1 . A non-aqueous electrolytic solution for an energy storage device, comprising: a non-aqueous solvent; an electrolyte salt dissolved in the non-aqueous solvent; a first additive consisting of a sulfolane compound represented by the following formula (1); and a second additive that is at least one selected from the group consisting of a cyclic sulfuric ester compound represented by the following formula (2a) and a dinitrile compound represented by the following formula (2b): in the formula (1), R 1 represents a methyl group, an ethyl group, a vinyl group, a phenyl group, or a tolyl group, in the formula (2a), R 2 and R 3 each independently represent a methyl group, an ethyl group, or a hydrogen atom, and in the formula (2b), R 4 represents an alkylene group having 1 to 6 carbon atoms. 2 . The non-aqueous electrolytic solution for an energy storage device according to claim 1 , further comprising a third additive formed of at least one lithium salt represented by the following formula (3a), (3b), (3c), (3d), or (3e): 3 . The non-aqueous electrolytic solution for an energy storage device according to claim 1 , wherein the electrolyte salt includes at least one lithium salt selected from the group consisting of LiPF 6 , LiBF 4 , and LiN(SO 2 F) 2 . 4 . The non-aqueous electrolytic solution for an energy storage device according to claim 1 , wherein the content of the first additive is 0.1% by mass or more and 5% by mass or less based on the mass of the non-aqueous electrolytic solution, and the content of the second additive is 0.1% by mass or more and 5% by mass or less based on the mass of the non-aqueous electrolytic solution. 5 . The non-aqueous electrolytic solution for an energy storage device according to claim 1 , wherein the second additive is the cyclic sulfuric ester compound represented by the following formula (2a). 6 . An energy storage device comprising: the non-aqueous electrolytic solution for an energy storage device according to claim 1 ; a positive electrode; and a negative electrode.
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Classifications
characterised by the solutes · CPC title
- H01M10/0567Primary
characterised by the additives · CPC title
Li-accumulators · CPC title
Energy storage systems for electromobility, e.g. batteries · CPC title
- H01G11/62Primary
characterised by the solute, e.g. salts, anions or cations therein · CPC title
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- What does patent US2021119255A1 cover?
- Disclosed is a non-aqueous electrolytic solution for an energy storage device, including a non-aqueous solvent, an electrolyte salt, a first additive consisting of a sulfolane compound represented by the following formula (1), and a second additive which is at least one selected from the group consisting of a cyclic sulfuric ester compound represented by the following formula (2a) and a dinitri…
- Who is the assignee on this patent?
- Mu Ionic Solutions Corp, Sumitomo Seika Chemicals
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0567. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Apr 22 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).