Lithium secondary battery
US-2015349381-A1 · Dec 3, 2015 · US
Electrolyte and electrochemical energy storage device
US10886565B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10886565-B2 |
| Application number | US-201816026990-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 3, 2018 |
| Priority date | Jul 27, 2017 |
| Publication date | Jan 5, 2021 |
| Grant date | Jan 5, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
The present disclosure provides an electrolyte and an electrochemical energy storage device, the electrolyte comprises an electrolyte salt and an additive. The additive comprises a sulfonic ester cyclic quaternary ammonium salt and a multinitrile compound. The sulfonic ester cyclic quaternary ammonium salt and the multinitrile compound can form a dense and uniform passive film with high ionic conductivity on a surface of each of the positive electrode film and the negative electrode film, so as to prevent continuous oxidation and reduction reaction from occurring between the electrolyte and the positive electrode film and the negative electrode film and make the electrochemical energy storage device has excellent high temperature cycle performance and high temperature storage performance.
First claim
Opening claim text (preview).
What is claimed: 1. An electrolyte, comprising: an electrolyte salt; and an additive; wherein the additive comprises a sulfonic ester cyclic quaternary ammonium salt and a multinitrile compound; wherein the sulfonic ester cyclic quaternary ammonium salt is the multinitrile compound is ethylene glycol bis(propionitrile) ether; a content of the sulfonic ester cyclic quaternary ammonium salt is 0.05%˜10% of a total mass of the electrolyte; and a content of the multinitrile compound is 0.05%˜7% of the total mass of the electrolyte. 2. The electrolyte according to claim 1 , wherein the content of the sulfonic ester cyclic quaternary ammonium salt is 0.1%˜5% of the total mass of the electrolyte; and the content of the multinitrile compound is 0.1%˜4% of the total mass of the electrolyte. 3. The electrolyte according to claim 1 , wherein the electrolyte is a liquid electrolyte, a solid polymer electrolyte or a gel polymer electrolyte. 4. An electrochemical energy storage device, comprising an electrolyte; the electrolyte comprising an electrolyte salt and an additive; wherein the additive comprises a sulfonic ester cyclic quaternary ammonium salt and a multinitrile compound; wherein the sulfonic ester cyclic quaternary ammonium salt is the multinitrile compound is ethylene glycol bis(propionitrile) ether; a content of the sulfonic ester cyclic quaternary ammonium salt is 0.05%˜10% of a total mass of the electrolyte; and a content of the multinitrile compound is 0.05%˜7% of the total mass of the electrolyte. 5. The electrochemical energy storage device according to claim 4 , wherein the content of the sulfonic ester cyclic quaternary ammonium salt is 0.1%˜5% of the total mass of the electrolyte; and the content of the multinitrile compound is 0.1%˜4% of the total mass of the electrolyte. 6. The electrochemical energy storage device according to claim 4 , wherein the electrolyte is a liquid electrolyte, a solid polymer electrolyte or a gel polymer electrolyte.
Assignees
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Classifications
Solid electrolytes, e.g. gels; Additives therein · CPC title
Organic electrolyte · CPC title
Li-accumulators · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
non-condensed with carbocyclic rings or heterocyclic rings or ring systems · CPC title
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Frequently asked questions
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- What does patent US10886565B2 cover?
- The present disclosure provides an electrolyte and an electrochemical energy storage device, the electrolyte comprises an electrolyte salt and an additive. The additive comprises a sulfonic ester cyclic quaternary ammonium salt and a multinitrile compound. The sulfonic ester cyclic quaternary ammonium salt and the multinitrile compound can form a dense and uniform passive film with high ionic c…
- Who is the assignee on this patent?
- Contemporary Amperex Technology Co Ltd
- 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 Tue Jan 05 2021 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).