Liquid Electrolyte Composition, and Electrochemical Cell Comprising Said Electrolyte Composition
US-2024347772-A1 · Oct 17, 2024 · US
Electrolytic solution and secondary battery using same
US2025096327A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025096327-A1 |
| Application number | US-202418969630-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 5, 2024 |
| Priority date | Jun 10, 2022 |
| Publication date | Mar 20, 2025 |
| Grant date | — |
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Abstract
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Provided are an electrolytic solution that can allow a secondary battery comprising a silicon negative electrode to be improved in life and suppressed in an increase in resistance, and a secondary battery using the electrolytic solution. An electrolytic solution for use in a battery comprising an electrode having a negative electrode material containing a silicon element and a carbon element, wherein the electrolytic solution comprises less than 10% by mass of a fluorinated ether represented by the following general formula (1): HCF 2 CF 2 —O—R (1), wherein R is a fluorinated alkyl group.
First claim
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1 . An electrolytic solution for use in a battery comprising an electrode having a negative electrode material containing a silicon element and a carbon element, wherein the electrolytic solution comprises less than 10% by mass of a fluorinated ether represented by the following general formula (1): HCF 2 CF 2 —O—R (1) wherein R is a fluorinated alkyl group. 2 . The electrolytic solution according to claim 1 , wherein the fluorinated ether represented by the general formula (1) is at least one fluorinated ether selected from the group consisting of fluoroethers represented by the following general formulas (2) to (4): HCF 2 CF 2 —O—CH 2 CF 2 CF 2 H (2) HCF 2 CF 2 —O—CH 2 CF 2 CF 3 (3) HCF 2 CF 2 —O—CH 2 CF 3 (4). 3 . The electrolytic solution according to claim 1 , wherein the negative electrode material contains Si and/or SiOa (0<a<2), and a carbon compound. 4 . A secondary battery comprising the electrolytic solution according to claim 1 . 5 . The secondary battery according to claim 4 , wherein the negative electrode material contains Si and/or SiOa (0<a<2), and a carbon compound.
Assignees
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Classifications
- H01M10/0569Primary
characterised by the solvents · CPC title
- H01M10/0567Primary
characterised by the additives · CPC title
Fluorinated solvents · CPC title
Negative electrodes · CPC title
Mixture of solvents · CPC title
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- What does patent US2025096327A1 cover?
- Provided are an electrolytic solution that can allow a secondary battery comprising a silicon negative electrode to be improved in life and suppressed in an increase in resistance, and a secondary battery using the electrolytic solution. An electrolytic solution for use in a battery comprising an electrode having a negative electrode material containing a silicon element and a carbon element, w…
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0569. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Mar 20 2025 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).