Liquid Electrolyte Composition, and Electrochemical Cell Comprising Said Electrolyte Composition
US-2024347772-A1 · Oct 17, 2024 · US
Electrolyte formulations for lithium ion batteries
US2016372791A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016372791-A1 |
| Application number | US-201514746761-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 22, 2015 |
| Priority date | Jun 22, 2015 |
| Publication date | Dec 22, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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Electrolyte formulations including additives or combinations of additives. The electrolyte formulations are useful in lithium ion battery cells having lithium titanate anodes. The electrolyte formulations provide low temperature power performance and high temperature stability in such lithium ion battery cells.
First claim
Opening claim text (preview).
1 . A lithium ion battery cell, comprising: a first electrode; a second electrode comprising a lithium titanate active material; and an electrolyte formulation comprising LiPF 6 and comprising a first additive, wherein the first additive comprises tris(2,2,2-trifluoroethyl)borate, and a second additive, wherein the second additive comprises a fluorinated compound other than tris(2,2,2-trifluoroethyl)borate. 2 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated borate. 3 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated oxaborolane. 4 . The lithium ion battery cell of claim 3 , wherein the second additive comprises 4,4,5,5-tetramethyl-2-(4-trifluoromethylphenyl)-1,3,2-dioxaborolane. 5 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated ester. 6 . The lithium ion battery cell of claim 5 , wherein the second additive comprises ethyl difluoroacetate. 7 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated phosphonate. 8 . The lithium ion battery cell of claim 7 , wherein the second additive comprises diethyl (difluoromethyl)phosphonate. 9 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated phosphate. 10 . The lithium ion battery cell of claim 9 , wherein the second additive comprises tris(2,2,2-trifluoroethyl)phosphate. 11 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated carbonate. 12 . The lithium ion battery cell of claim 11 , wherein the second additive comprises methyl 2,2,2-trifluoroethyl carbonate. 13 . A lithium ion battery cell, comprising: a first electrode; a second electrode comprising a lithium titanate active material; and an electrolyte formulation comprising LiPF 6 and comprising a first additive, wherein the first additive comprises tris(2,2,2-trifluoroethyl)phosphate, and a second additive, wherein the second additive comprises a fluorinated compound other than tris(2,2,2-trifluoroethyl)phosphate. 14 . The lithium ion battery cell of claim 13 , wherein the second additive comprises a fluorinated borate. 15 . The lithium ion battery cell of claim 1 , wherein the second additive comprises a fluorinated oxaborolane. 16 . The lithium ion battery cell of claim 15 , wherein the second additive comprises 4,4,5,5-tetramethyl-2-(4-trifluoromethylphenyl)-1,3,2-dioxaborolane. 17 . The lithium ion battery cell of claim 13 , wherein the second additive comprises a fluorinated ester. 18 . The lithium ion battery cell of claim 17 , wherein the second additive comprises ethyl difluoroacetate. 19 . The lithium ion battery cell of claim 13 , wherein the second additive comprises a fluorinated phosphonate. 20 . The lithium ion battery cell of claim 19 , wherein the second additive comprises diethyl (difluoromethyl)phosphonate. 21 . A lithium ion battery cell, comprising: a first electrode; a second electrode comprising a lithium titanate active material; and an electrolyte formulation comprising LiPF 6 and comprising a first additive, wherein the first additive comprises methyl 2,2,2-trifluoroethyl carbonate, and a second additive, wherein the second additive comprises a fluorinated compound other than methyl 2,2,2-trifluoroethyl carbonate. 22 . The lithium ion battery cell of claim 21 , wherein the second additive comprises a fluorinated borate. 23 . The lithium ion battery cell of claim 21 , wherein the second additive comprises a fluorinated oxaborolane. 24 . The lithium ion battery cell of claim 23 , wherein the second additive comprises 4,4,5,5-tetramethyl-2-(4-trifluoromethylphenyl)-1,3,2-dioxaborolane. 25 . The lithium ion battery cell of claim 21 , wherein the second additive comprises a fluorinated ester. 26 . The lithium ion battery cell of claim 25 , wherein the second additive comprises ethyl difluoroacetate. 27 . The lithium ion battery cell of claim 21 , wherein the second additive comprises a fluorinated phosphonate. 28 . The lithium ion battery cell of claim 27 , wherein the second additive comprises diethyl (difluoromethyl)phosphonate.
Assignees
Inventors
Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Organic electrolyte · CPC title
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
- H01M10/0567Primary
characterised by the additives · CPC title
Energy storage using batteries · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016372791A1 cover?
- Electrolyte formulations including additives or combinations of additives. The electrolyte formulations are useful in lithium ion battery cells having lithium titanate anodes. The electrolyte formulations provide low temperature power performance and high temperature stability in such lithium ion battery cells.
- Who is the assignee on this patent?
- Wildcat discovery technologies inc, Johnson Controls Tech Co
- 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 Dec 22 2016 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).