CN118040044A - Electrolyte additive, electrolyte and lithium ion battery - Google Patents

Electrolyte additive, electrolyte and lithium ion battery Download PDF

Info

Publication number
CN118040044A
CN118040044A CN202311469606.5A CN202311469606A CN118040044A CN 118040044 A CN118040044 A CN 118040044A CN 202311469606 A CN202311469606 A CN 202311469606A CN 118040044 A CN118040044 A CN 118040044A
Authority
CN
China
Prior art keywords
electrolyte
carbonate
organic solvent
additive
lithium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202311469606.5A
Other languages
Chinese (zh)
Other versions
CN118040044B (en
Inventor
杨雪蕊
周耐根
敖昕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanchang University
Original Assignee
Nanchang University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanchang University filed Critical Nanchang University
Priority to CN202311469606.5A priority Critical patent/CN118040044B/en
Publication of CN118040044A publication Critical patent/CN118040044A/en
Application granted granted Critical
Publication of CN118040044B publication Critical patent/CN118040044B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • H01M10/0567—Liquid materials characterised by the additives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides an electrolyte additive, electrolyte and a lithium ion battery, and relates to the technical field of lithium ion batteries. The electrolyte additive provided by the invention has a five-membered ring structure with N and S heteroatoms, and after the electrolyte additive is added into the electrolyte of a lithium ion battery, the additive can be subjected to ring-opening polymerization in the preferential oxidation/reduction process of the surface of a positive electrode/negative electrode to form a polymer which can stabilize the structure of the positive electrode/negative electrode and has high ion conductivity and high electrochemical stability, so that the dissolution and migration of metal ions and active oxygen ions in the positive electrode are effectively inhibited, and the direct contact between the positive electrode/negative electrode with high activity and the electrolyte is inhibited, thereby achieving the purposes of improving the structural stability of the positive electrode/negative electrode, inhibiting interface side reactions and improving the electrochemical performance of the battery.

Description

Electrolyte additive, electrolyte and lithium ion battery
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to an electrolyte additive, an electrolyte, a preparation method and a lithium ion battery.
Background
The lithium ion battery has the advantages of high energy density, high working potential, environmental friendliness and the like, is widely applied to the fields of portable electronic equipment, electric automobiles and the like, and has great application potential in the fields of electric airplanes, military and the like. However, with the continuous development of electronic products in the intelligent, light and thin and ultra-long standby directions, and the continuous climbing requirements of large-scale equipment such as electric automobiles, electric airplanes and the like, such as long endurance and long service life, higher requirements are put forward on the cycle stability, energy density and safety of batteries.
However, the cycling stability, energy density, and safety of lithium ion batteries are primarily determined by the interfacial stability between the electrolyte and the electrodes. On the one hand, the anode commonly used at present is made of metal oxide materials, and in a deep lithium removal state, oxidized high-valence metal ions can catalyze the decomposition of electrolyte, so that metal ions are dissolved out and the structure collapses, and the process is aggravated along with the increase of the voltage of the battery and the participation of oxygen in the electrode in charge compensation. In addition, dissolved metal ions and active oxygen can migrate to the negative electrode and be reduced on the surface of the negative electrode of the battery, so that the original solid electrolyte membrane (SEI) on the surface of the negative electrode is destroyed, the interface side reaction on the negative electrode side is aggravated, and even the thermal runaway risks such as combustion, explosion and the like can be induced when serious. Therefore, improving the interface stability between the positive/negative electrode and the electrolyte is critical to the overall improvement of the battery performance.
Disclosure of Invention
The invention aims to provide an electrolyte additive, an electrolyte, a preparation method and a lithium ion battery, wherein by introducing N, S elements of the additive into a molecular structure main body frame, an interface film with high ion conductivity and high electrochemical stability can be formed on the surfaces of a positive electrode and a negative electrode, so that the interface stability between the positive electrode/the negative electrode and the electrolyte is improved, and the long-cycle performance, the energy density and the safety performance of the lithium ion battery are improved.
In a first aspect, the invention provides an electrolyte additive, which has a structure as shown in formula I:
wherein R 1 and R 2 are independently of each other substituted or unsubstituted alkyl or aryl.
In a second aspect, the invention also provides an electrolyte comprising the electrolyte additive provided above.
Optionally, the electrolyte further comprises an organic solvent and lithium salt dissolved in the organic solvent.
Optionally, the concentration of the electrolyte additive in the electrolyte is 0.1-10wt.%.
Optionally, the concentration of the lithium salt in the electrolyte is 0.2-5mol/L
Alternatively, the lithium salt includes at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium bis (trifluoromethylsulfonate) imide, lithium bis (fluorosulfonyl) imide, lithium difluorooxalato borate, lithium bisoxalato borate, and lithium perchlorate.
Optionally, the organic solvent comprises at least one of a carbonate non-aqueous organic solvent, an ether non-aqueous organic solvent, a sulfone non-aqueous organic solvent, a nitrile non-aqueous organic solvent and a carboxylate non-aqueous organic solvent;
The carbonate nonaqueous organic solvent comprises at least one of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, dimethyl carbonate, diethyl carbonate, methyl propyl carbonate, fluoroethylene carbonate, fluoromethyl ethyl carbonate, fluoropropylene carbonate, bifluoroethylene carbonate, methyl trifluoroethyl carbonate and tri (trifluoroethyl) carbonate;
The ether non-aqueous organic solvent comprises at least one of ethylene glycol dimethyl ether, pentane oxide, methyl perfluoro butyl ether, ethyl perfluoro butyl ether and fluoro ethyl propyl ether;
The sulfone nonaqueous organic solvent comprises at least one of sulfolane, dimethyl sulfoxide, n-sulfolane, dimethyl sulfone, phenyl sulfone and methyl ethyl sulfone;
The nitrile nonaqueous organic solvent comprises at least one of acetonitrile, succinonitrile, adiponitrile, octadinitrile and hexanetrinitrile;
the carboxylic acid ester nonaqueous solvent comprises at least one of ethyl acetate, methyl acetate, ethyl formate, ethyl difluoroacetate, methyl 2, 3-tetrafluoropropionate and methyl 2, 2-difluoro-2 (fluorosulfonyl) acetate.
Optionally, the electrolyte further comprises a functional additive, the concentration of the functional additive in the electrolyte being 0.1-10wt.%.
Optionally, the functional additive comprises at least one of ethylene carbonate, propylene sulfite, dimethyl sulfite, ethylene sulfate, methylene methane disulfonate, n-propyl phosphoric anhydride, triallyl phosphoric ester, succinic anhydride, and methylsulfonic anhydride.
In a third aspect, the invention also provides a lithium ion battery comprising any of the above-described optional electrolytes.
Drawings
Fig. 1 is a cycle performance chart of lithium ion batteries prepared in example 8 and comparative example 1 of the present invention;
Fig. 2 is a cycle performance chart of the lithium ion batteries prepared in example 8 and comparative example 1 of the present invention;
FIG. 3 is a graph showing cycle performance of lithium ion batteries prepared in examples 10 to 11 and comparative examples 1 to 2 according to the present invention;
fig. 4 is a cycle performance chart of the lithium ion batteries prepared in example 12 and comparative example 1 of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items.
The embodiment of the invention provides an electrolyte additive, which has a structural formula shown in a formula I.
Wherein the R 1 and R 2 groups are, independently of each other, any of substituted alkyl, substituted aryl, unsubstituted alkyl and unsubstituted aryl.
In some embodiments, the unsubstituted alkyl group can be any of methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, cyclopropyl, and cyclobutyl.
In some embodiments, the substituted alkyl group may be any of an alkenyl alkyl group, an alkynyl alkyl group, and a haloalkyl group. In practice, the alkenylalkyl group may be any of allyl, allyl isobutyl, allyl and allyl isopentyl, the alkynylalkyl group may be any of propargyl, propargyl isobutyl, propargyl and propargyl isopentyl, and the haloalkyl group may be any of trifluoromethyl, trifluoroethyl, trifluoropropyl, pentafluoropropyl, trifluorobutyl and pentafluorobutyl.
In some embodiments, the substituted aryl group may be any of p-trifluoromethylphenyl, p-fluorophenyl, p-chlorophenyl, o-trifluoromethylphenyl, and p-fluorobenzyl.
The electrolyte additive provided by the invention has a five-membered ring structure doped with N and S heteroatoms simultaneously. When the electrolyte additive is added to the electrolyte of the lithium ion battery, the additive can be subjected to ring-opening polymerization in the preferential oxidation/reduction process of the surfaces of the positive electrode and the negative electrode to form a high polymer which can stabilize the positive electrode and the negative electrode structure and has high ion conductivity and high electrochemical stability, so that the dissolution and migration of metal ions and active oxygen ions in the positive electrode are effectively inhibited, the direct contact between the positive electrode and the negative electrode with high activity and the electrolyte is inhibited, and the purposes of improving the structural stability of the positive electrode and the negative electrode, inhibiting interface side reactions and improving the electrochemical performance of the battery are achieved.
In addition, the invention also provides an electrolyte which comprises the electrolyte additive provided in any embodiment.
In some embodiments, the concentration of the electrolyte additive in the electrolyte is 0.1-10%, and in this concentration range, the additive can achieve better performance, and when the content of the additive is lower than 0.1wt.%, it is difficult to form a uniform protective film on the surface of the positive/negative electrode due to the excessively low content, so as to isolate the direct contact between the high-reactivity electrode and the electrolyte; similarly, when the content of the additive is more than 10wt.%, the interfacial layer formed by in-situ decomposition of the additive on the positive/negative surfaces may be relatively thick, blocking ion and electron transport, and reducing battery capacity.
In some embodiments, the electrolyte further comprises an organic solvent and a lithium salt dissolved in the organic solvent, and in fact, the electrolyte additive is also dissolved in the organic solvent, together forming a stable solution.
In some embodiments, the organic solvent is a non-aqueous organic solvent commonly used in the art in preparing electrolytes. Specifically, the organic solvent may be at least one of carbonate, ether, sulfone, nitrile and carboxylate organic solvents.
More specifically, when the organic solvent is a carbonate-based organic solvent, it may be at least one of ethylene carbonate, propylene carbonate, methylethyl carbonate, dimethyl carbonate, diethyl carbonate, methylpropyl carbonate, fluoroethylene carbonate, methylethyl carbonate, fluoropropylene carbonate, bis-fluoroethylene carbonate, methyltrifluoroethyl carbonate, tris (trifluoroethyl) carbonate.
More specifically, when the organic solvent is an ether-type organic solvent, it may be at least one of ethylene glycol dimethyl ether, pentane oxide, methyl perfluorobutyl ether, ethyl perfluorobutyl ether, and fluoroethylene propyl ether.
More specifically, when the organic solvent is a sulfone-based organic solvent, it may be at least one of sulfolane, dimethyl sulfoxide, n-sulfolane, dimethyl sulfone, phenyl sulfone and methyl ethyl sulfone.
More specifically, when the organic solvent is a nitrile-based organic solvent, it may be at least one of acetonitrile, succinonitrile, adiponitrile, octadinitrile and hexanetrinitrile.
More specifically, when the organic solvent is a carboxylate organic solvent, it may be at least one of ethyl acetate, methyl acetate, ethyl formate, ethyl difluoroacetate, methyl 2, 3-tetrafluoropropionate and methyl 2, 2-difluoro-2 (fluorosulfonyl) acetate.
In some embodiments, the lithium salt dissolved in the organic solvent comprises at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium bis (trifluoromethylsulfonate) imide, lithium bis (fluorosulfonyl) imide, lithium difluorooxalato borate, lithium bisoxalato borate, and lithium perchlorate.
In some embodiments, the concentration of lithium salt in the electrolyte is 0.2-5mol/L.
In some embodiments, functional additives are also included in the electrolyte. Specifically, the functional additive comprises at least one of ethylene carbonate, propylene sulfite, dimethyl sulfite, ethylene sulfate, methylene methane disulfonate, n-propyl phosphoric anhydride, triallyl phosphate, succinic anhydride and methylsulfonic anhydride.
In some embodiments, the concentration of the functional additive in the electrolyte is 0.1-10wt.%.
The embodiment of the invention also provides a lithium ion battery, which comprises the electrolyte in any embodiment.
In some embodiments, in the lithium ion battery, at least one of a layered oxide positive electrode represented by LiCoO 2, ternary LiNi xCoyMn1-x-yO2 (x, y >0, and x+y < 1), liNi xCoyAl1-x-yO2 (x, y >0, and x+y < 1), a lithium-rich xLi 2MnO3·(1-x)LiMO2 (m=ni, co, mn,0< x < 1), and the like, a polyanion positive electrode represented by LiFePO 4、LiMn1-xFexPO4(x<1)、LiCoPO4 and the like, a spinel positive electrode represented by LiMn 2O4、LiNi0.5Mn1.5O4 and the like, and the like; and at least one of lithium metal, graphite, silicon carbon, micro/nano silicon and other negative electrode materials, and other positive/negative electrode materials for batteries, such as Na xMO2 (M is a transition metal atom, 0< x.ltoreq.1) positive electrode, na 3V2(PO4)3 positive electrode, soft/hard carbon negative electrode and the like in a sodium ion battery, which may involve interfacial side reactions are not excluded.
Example 1
The embodiment 1 of the invention provides a preparation method of an electrolyte additive, which comprises the following steps:
95.0397mg (0.5 mmol) of 1- (4-fluorophenyl) -4-methyl-1-yn-3-one as a raw material I, 95.9651mg (0.6 mmol) of potassium ethylxanthate as a raw material II, 289.8858mg (2.0 mmol) of ammonium iodide, 9.0mg (0.5 mmol) of deionized water and 2.0mL of N, N-dimethylformamide are reacted under the air atmosphere condition for 12 hours, and 81.4097mg of electrolyte additive (NS-1 for short) is obtained by column chromatography separation and purification, and the calculated yield is 75%.
Specifically, the structural formula of the electrolyte additive NS-1 provided in the embodiment 1 is as follows:
Examples 2 to 7
Examples 2-7 of the present invention provide a method for preparing an electrolyte additive, which differs from example 1 in that (raw materials and product structures) are shown in table 1 below.
TABLE 1
Example 8
Embodiment 8 of the present invention provides a method for preparing a lithium ion battery, wherein the electrolyte additive NS-1 prepared in embodiment 1 is added, comprising the following steps:
S1, preparing electrolyte: in a glove box filled with argon, ethylene carbonate and ethylmethyl carbonate were mixed in a volume ratio of 3:7, after stirring and mixing, sequentially adding lithium hexafluorophosphate and an additive NS-1 into the mixed solution; wherein the addition amount of the lithium hexafluorophosphate is such that the concentration of the lithium hexafluorophosphate in the electrolyte is 1.2mol/L, and the addition amount of the additive NS-1 is such that the content of the additive NS-1 in the electrolyte is 1wt.%;
S2, assembling a battery: and taking ternary material LiNi 0.9Co0.5Mn0.5O2 as a positive electrode material, taking metallic lithium as a negative electrode material, respectively dripping electrolyte containing the NS-1 additive on two sides of the PP-based diaphragm, and packaging to obtain the lithium ion battery.
Example 9
The preparation method of the lithium ion battery provided in the embodiment 9 of the invention is different from the embodiment 8 in that the electrolyte additive NS-2 prepared in the embodiment 2 is added, in the step S1 of preparing the electrolyte, lithium hexafluorophosphate and the additive NS-2 are sequentially added to the mixed solution, and the additive NS-2 is added in an amount such that the content of the additive NS-2 in the electrolyte is 10wt.%.
Example 10
The preparation method of the lithium ion battery provided in the embodiment 10 of the present invention is different from the embodiment 8 in that the electrolyte additive NS-5 prepared in the embodiment 5 is added, in the step S1 of preparing the electrolyte, lithium hexafluorophosphate and the additive NS-5 are sequentially added to the mixed solution, and the additive NS-2 is added in an amount such that the content of the additive NS-2 in the electrolyte is 0.5wt.%.
Example 11
The preparation method of the lithium ion battery provided in the embodiment 11 of the invention is different from the preparation method of the embodiment 8 in that the electrolyte additive NS-5 and other functional additives of vinylene carbonate prepared in the embodiment 5 are added, lithium hexafluorophosphate and the additive NS-5 and the functional additives of vinylene carbonate are sequentially added to the mixed solution in the preparation of the electrolyte in the step S1, and the additive NS-2 and the vinylene carbonate are added in amounts such that the contents of the additive NS-2 and the vinylene carbonate in the electrolyte are 0.5wt.%.
Example 12
The preparation method of the lithium ion battery provided in the embodiment 12 of the present invention is different from the embodiment 8 in that the electrolyte additive NS-7 prepared in the embodiment 7 is added, in the step S1 of preparing the electrolyte, lithium hexafluorophosphate and the additive NS-7 are sequentially added to the mixed solution, and the additive NS-2 is added in an amount such that the content of the additive NS-7 in the electrolyte is 0.1wt.%.
Comparative example 1
Comparative example 1 of the present invention provides a method for preparing a lithium ion battery, which is different from example 8 in that the electrolyte additive NS-1 prepared as in example 1 is not added, and in preparing an electrolyte in step S1, only lithium hexafluorophosphate is added to the mixed solution.
Comparative example 2
Comparative example 1 of the present invention provides a method for preparing a lithium ion battery, which is different from example 8 in that the electrolyte additive NS-1 prepared as in example 1 is not added, and in the preparation of the electrolyte in step S1, only lithium hexafluorophosphate and the functional additive ethylene carbonate are added to the mixed solution.
Performance testing
The lithium ion batteries prepared in examples 8 to 12 and comparative examples 1 to 2 were subjected to electrochemical performance test at a rate of 1C (1c=200 mAh/g) and room temperature, with a voltage range of 3.0 to 4.3V, and the test results are shown in fig. 1 to 4.
Performance analysis
As can be seen from fig. 1, the addition of NS-1 in example 8 can significantly improve the discharge capacity and capacity retention rate after cycling of the lithium ion battery, from 71% in comparative example 1 to 89% in example 8, which is mainly beneficial to the interface film with higher ionic conductivity and electrochemical stability formed on the surface of the positive/negative material by NS-1, and can well protect the electrode and inhibit electrolyte decomposition, thereby improving the service life of the lithium ion battery.
As can be seen from fig. 2, when the amount of NS-2 added in example 9 reaches 10wt.%, the battery capacity is reduced due to the increased content of the electrolyte additive, which makes the interface layer formed on the positive/negative electrode surfaces of the additive thicker, but the capacity retention rate (78%) of the lithium ion battery in example 9 is still higher than that of comparative example 1 (71%) during long cycles, which is advantageous in promoting the cycle performance stability of the battery.
As can be seen from fig. 3, the functional additive ethylene carbonate was not added to comparative example 1 and example 10, and the functional additive ethylene carbonate was added to comparative example 2 and example 11, and the electrochemical properties of the batteries of example 10 and example 11 containing the NS-5 additive were found to be superior to those of comparative example 1 and comparative example 2.
As can be seen from fig. 4, even when the electrolyte additive NS-7 was added in an amount of only 0.1% in example 12, the battery was still lower in decay rate under long cycles than in comparative example 1, which suggests that 0.1wt% of the electrolyte additive was also capable of improving the cycle performance stability and the service life of the lithium ion battery.
While embodiments of the present invention have been described in detail hereinabove, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. It is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims (10)

1. An electrolyte additive is characterized in that the structure of the additive is shown as a formula I:
wherein R 1 and R 2 are independently of each other substituted or unsubstituted alkyl or aryl.
2. An electrolyte comprising the electrolyte additive of claim 1.
3. The electrolyte according to claim 2, further comprising an organic solvent and a lithium salt dissolved in the organic solvent.
4. The electrolyte of claim 2 or 3, wherein the concentration of the electrolyte additive in the electrolyte is 0.1-10wt.%.
5. The electrolyte of claim 3, wherein the concentration of the lithium salt in the electrolyte is 0.2 to 5mol/L.
6. The electrolyte of claim 3 wherein the lithium salt comprises at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium bis (trifluoromethane sulfonate) imide, lithium bis (fluorosulfonyl) imide, lithium difluorooxalato borate, lithium bisoxalato borate, and lithium perchlorate.
7. The electrolyte according to claim 3, wherein the organic solvent comprises at least one of a carbonate-based nonaqueous organic solvent, an ether-based nonaqueous organic solvent, a sulfone-based nonaqueous organic solvent, a nitrile-based nonaqueous organic solvent, and a carboxylate-based nonaqueous organic solvent;
The carbonate nonaqueous organic solvent comprises at least one of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, dimethyl carbonate, diethyl carbonate, methyl propyl carbonate, fluoroethylene carbonate, fluoromethyl ethyl carbonate, fluoropropylene carbonate, bifluoroethylene carbonate, methyl trifluoroethyl carbonate and tri (trifluoroethyl) carbonate;
The ether non-aqueous organic solvent comprises at least one of ethylene glycol dimethyl ether, pentane oxide, methyl perfluoro butyl ether, ethyl perfluoro butyl ether and fluoro ethyl propyl ether;
The sulfone nonaqueous organic solvent comprises at least one of sulfolane, dimethyl sulfoxide, n-sulfolane, dimethyl sulfone, phenyl sulfone and methyl ethyl sulfone;
The nitrile nonaqueous organic solvent comprises at least one of acetonitrile, succinonitrile, adiponitrile, octadinitrile and hexanetrinitrile:
The carboxylic acid ester nonaqueous solvent comprises at least one of ethyl acetate, methyl acetate, ethyl formate, ethyl difluoroacetate, methyl 2, 3-tetrafluoropropionate and methyl 2, 2-difluoro-2 (fluorosulfonyl) acetate.
8. The electrolyte of claim 3, further comprising a functional additive, wherein the functional additive is present in the electrolyte at a concentration of 0.1 to 10wt.%.
9. The electrolyte of claim 8 wherein the functional additive comprises at least one of ethylene carbonate, propylene sulfite, dimethyl sulfite, ethylene sulfate, methylene methane disulfonate, n-propyl phosphoric anhydride, triallyl phosphate, succinic anhydride, and methylsulfonic anhydride.
10. A lithium ion battery comprising the electrolyte according to claims 2 to 9.
CN202311469606.5A 2023-11-07 2023-11-07 Electrolyte and lithium ion battery Active CN118040044B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311469606.5A CN118040044B (en) 2023-11-07 2023-11-07 Electrolyte and lithium ion battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311469606.5A CN118040044B (en) 2023-11-07 2023-11-07 Electrolyte and lithium ion battery

Publications (2)

Publication Number Publication Date
CN118040044A true CN118040044A (en) 2024-05-14
CN118040044B CN118040044B (en) 2024-09-13

Family

ID=90982892

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311469606.5A Active CN118040044B (en) 2023-11-07 2023-11-07 Electrolyte and lithium ion battery

Country Status (1)

Country Link
CN (1) CN118040044B (en)

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8402724A (en) * 1984-06-06 1985-12-31 Omi Int Corp PROCESS FOR ELECTROSPOSITION OF A THREE-LAYER COMPOSITE LAYER, CONTAINING NICKEL ON A SUBSTRATE
US20100040956A1 (en) * 2008-08-13 2010-02-18 Greatbatch Ltd. Polyvinylpyridine additives for nonaqueous electrolytes activating lithium rechargeable electrochemical cells
WO2014036024A1 (en) * 2012-08-30 2014-03-06 Asahi Kasei Kabushiki Kaisha Materials for battery electrolytes and methods for use
US20140275179A1 (en) * 2013-03-14 2014-09-18 Janssen Pharmaceutica Nv Gpr120 agonists for the treatment of type ii diabetes
CN104513213A (en) * 2013-09-28 2015-04-15 山东亨利医药科技有限责任公司 Fxr agonist
WO2015134039A1 (en) * 2014-03-07 2015-09-11 Janssen Pharmaceutica Nv Isothiazole derivatives as gpr120 agonists for the treatment of type ii diabetes
JP2016048673A (en) * 2014-08-26 2016-04-07 三菱化学株式会社 Nonaqueous electrolyte secondary battery
JP2017168347A (en) * 2016-03-17 2017-09-21 富山薬品工業株式会社 Nonaqueous electrolyte solution for power storage device
EP3627606A1 (en) * 2018-09-21 2020-03-25 Ningde Amperex Technology Limited Electrolyte and electrochemical device
CN110957532A (en) * 2019-12-25 2020-04-03 惠州市豪鹏科技有限公司 Electrolyte for lithium ion battery and lithium ion battery comprising same
CN112490502A (en) * 2020-12-04 2021-03-12 广州天赐高新材料股份有限公司 Electrolyte and lithium secondary battery
CN112552257A (en) * 2020-12-15 2021-03-26 五邑大学 3, 5-disubstituted isothiazole compound and synthesis method and application thereof
WO2022000271A1 (en) * 2020-06-30 2022-01-06 宁德新能源科技有限公司 Electrolyte, and electrochemical device and electronic device comprising same
WO2022199163A1 (en) * 2021-03-25 2022-09-29 珠海市赛纬电子材料股份有限公司 Non-aqueous electrolyte additive, non-aqueous electrolyte and lithium ion battery
WO2023123673A1 (en) * 2021-12-28 2023-07-06 张家港市国泰华荣化工新材料有限公司 Non-aqueous electrolyte and lithium-ion battery comprising non-aqueous electrolyte
WO2023206449A1 (en) * 2022-04-29 2023-11-02 宁德时代新能源科技股份有限公司 Secondary battery and battery module comprising same, battery pack, and electrical device

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8402724A (en) * 1984-06-06 1985-12-31 Omi Int Corp PROCESS FOR ELECTROSPOSITION OF A THREE-LAYER COMPOSITE LAYER, CONTAINING NICKEL ON A SUBSTRATE
US20100040956A1 (en) * 2008-08-13 2010-02-18 Greatbatch Ltd. Polyvinylpyridine additives for nonaqueous electrolytes activating lithium rechargeable electrochemical cells
WO2014036024A1 (en) * 2012-08-30 2014-03-06 Asahi Kasei Kabushiki Kaisha Materials for battery electrolytes and methods for use
US20140275179A1 (en) * 2013-03-14 2014-09-18 Janssen Pharmaceutica Nv Gpr120 agonists for the treatment of type ii diabetes
CN104513213A (en) * 2013-09-28 2015-04-15 山东亨利医药科技有限责任公司 Fxr agonist
WO2015134039A1 (en) * 2014-03-07 2015-09-11 Janssen Pharmaceutica Nv Isothiazole derivatives as gpr120 agonists for the treatment of type ii diabetes
JP2016048673A (en) * 2014-08-26 2016-04-07 三菱化学株式会社 Nonaqueous electrolyte secondary battery
JP2017168347A (en) * 2016-03-17 2017-09-21 富山薬品工業株式会社 Nonaqueous electrolyte solution for power storage device
EP3627606A1 (en) * 2018-09-21 2020-03-25 Ningde Amperex Technology Limited Electrolyte and electrochemical device
CN110957532A (en) * 2019-12-25 2020-04-03 惠州市豪鹏科技有限公司 Electrolyte for lithium ion battery and lithium ion battery comprising same
WO2022000271A1 (en) * 2020-06-30 2022-01-06 宁德新能源科技有限公司 Electrolyte, and electrochemical device and electronic device comprising same
CN112490502A (en) * 2020-12-04 2021-03-12 广州天赐高新材料股份有限公司 Electrolyte and lithium secondary battery
CN112552257A (en) * 2020-12-15 2021-03-26 五邑大学 3, 5-disubstituted isothiazole compound and synthesis method and application thereof
WO2022199163A1 (en) * 2021-03-25 2022-09-29 珠海市赛纬电子材料股份有限公司 Non-aqueous electrolyte additive, non-aqueous electrolyte and lithium ion battery
WO2023123673A1 (en) * 2021-12-28 2023-07-06 张家港市国泰华荣化工新材料有限公司 Non-aqueous electrolyte and lithium-ion battery comprising non-aqueous electrolyte
WO2023206449A1 (en) * 2022-04-29 2023-11-02 宁德时代新能源科技股份有限公司 Secondary battery and battery module comprising same, battery pack, and electrical device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
桃李等: "苯并噻唑碘的改进合成及其在染料敏化太阳电池中的应用", 物理化学学报, vol. 26, no. 3, 31 March 2010 (2010-03-31), pages 578 - 582 *

Also Published As

Publication number Publication date
CN118040044B (en) 2024-09-13

Similar Documents

Publication Publication Date Title
CN114175340B (en) Nonaqueous electrolyte, nonaqueous electrolyte battery and compound
JP5461883B2 (en) Non-aqueous electrolyte for secondary battery and non-aqueous electrolyte secondary battery
JP2017117684A (en) Electrolytic solution for nonaqueous electrolyte battery, and nonaqueous electrolyte battery using the same
CN108288728A (en) It is a kind of adaptation silicon carbon material lithium-ion battery electrolytes and its application
EP3618163B1 (en) Non-aqueous electrolyte solution, and secondary battery comprising the same
CN114552010B (en) Additive for lithium metal battery, electrolyte and lithium metal battery
WO2017001312A1 (en) Non-aqueous electrolytes for lithium-ion batteries comprising an isocyanide
KR20190057953A (en) Additive, non-aqueous electrolyte comprising the same, and lithium secondary battery comprising the same
WO2013031776A1 (en) Battery electrolyte and method for producing same, and battery comprising electrolyte
CN114024036A (en) Low-concentration lithium ion battery electrolyte and lithium ion battery prepared from same
KR20200082557A (en) An Electrolyte for a lithium ion secondary battery and a lithium ion secondary battery comprising the same
CN111116659A (en) Compound, electrolyte and lithium ion battery
EP3883037B1 (en) Electrolyte for lithium secondary battery and lithium secondary battery including the same
CN114824468A (en) Multifunctional lithium battery additive containing fluorine and boron substances and application thereof
CN117039151A (en) Lithium ion battery electrolyte and lithium ion battery containing same
EP3656014B1 (en) Heterocyclic additives bearing sulfonyl fluoride groups for electrolyte compositions of lithium batteries
CN118040044B (en) Electrolyte and lithium ion battery
CN105742711A (en) Electrolyte and lithium ion battery
CN113416178B (en) Lithium battery additive amido vinyl sulfate, and preparation method and application thereof
KR100585947B1 (en) Nonaqueous Electrolyte for Batteries
EP4310976A1 (en) Non-aqueous electrolyte solution and high-voltage lithium battery containing same
CN116918123A (en) Nonaqueous electrolyte, nonaqueous electrolyte battery, and compound
CN112349951B (en) Non-aqueous electrolyte containing sulfur-containing lithium salt derivative additive and lithium ion battery
CN113381069A (en) Lithium ion battery electrolyte with high-temperature stable circulation and lithium ion battery
CN111244547A (en) Electrolyte containing aromatic oxime additive and preparation method and application thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant