CN114373981A - Lithium ion battery non-aqueous electrolyte and lithium ion battery thereof - Google Patents
Lithium ion battery non-aqueous electrolyte and lithium ion battery thereof Download PDFInfo
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- CN114373981A CN114373981A CN202210053599.XA CN202210053599A CN114373981A CN 114373981 A CN114373981 A CN 114373981A CN 202210053599 A CN202210053599 A CN 202210053599A CN 114373981 A CN114373981 A CN 114373981A
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- lithium ion
- nonaqueous electrolyte
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- ion battery
- battery
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 57
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims abstract description 57
- -1 trimethoxy boron oxygen ester Chemical class 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 9
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 9
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 9
- UFHILTCGAOPTOV-UHFFFAOYSA-N tetrakis(ethenyl)silane Chemical compound C=C[Si](C=C)(C=C)C=C UFHILTCGAOPTOV-UHFFFAOYSA-N 0.000 claims abstract description 9
- ZFMOJHVRFMOIGF-UHFFFAOYSA-N 2,4,6-trimethoxy-1,3,5,2,4,6-trioxatriborinane Chemical compound COB1OB(OC)OB(OC)O1 ZFMOJHVRFMOIGF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 4
- 239000011149 active material Substances 0.000 claims description 3
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 claims description 2
- FSSPGSAQUIYDCN-UHFFFAOYSA-N 1,3-Propane sultone Chemical compound O=S1(=O)CCCO1 FSSPGSAQUIYDCN-UHFFFAOYSA-N 0.000 claims description 2
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 2
- 229910013188 LiBOB Inorganic materials 0.000 claims description 2
- 229910011297 LiCox Inorganic materials 0.000 claims description 2
- 229910010941 LiFSI Inorganic materials 0.000 claims description 2
- 229910013100 LiNix Inorganic materials 0.000 claims description 2
- 229910013172 LiNixCoy Inorganic materials 0.000 claims description 2
- 229910013872 LiPF Inorganic materials 0.000 claims description 2
- 229910012265 LiPO2F2 Inorganic materials 0.000 claims description 2
- 229910015818 MPO4 Inorganic materials 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 2
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 claims description 2
- MHYFEEDKONKGEB-UHFFFAOYSA-N oxathiane 2,2-dioxide Chemical compound O=S1(=O)CCCCO1 MHYFEEDKONKGEB-UHFFFAOYSA-N 0.000 claims description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims 3
- DFFDSQBEGQFJJU-UHFFFAOYSA-N butyl hydrogen carbonate Chemical compound CCCCOC(O)=O DFFDSQBEGQFJJU-UHFFFAOYSA-N 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 2
- 238000007086 side reaction Methods 0.000 abstract description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 40
- 239000004743 Polypropylene Substances 0.000 description 24
- 230000014759 maintenance of location Effects 0.000 description 14
- 229910011328 LiNi0.6Co0.2Mn0.2O2 Inorganic materials 0.000 description 13
- 239000007774 positive electrode material Substances 0.000 description 13
- 150000003839 salts Chemical class 0.000 description 13
- 229920001155 polypropylene Polymers 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910013716 LiNi Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
-
- 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
- H01M10/05—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
Abstract
The invention discloses a lithium ion battery non-aqueous electrolyte and a lithium ion battery thereof. It includes: lithium salt, organic solvent, tetravinyl silane and trimethoxy boron oxygen ester. In the non-aqueous electrolyte of the lithium ion battery, the additive of the tetraenylsilane has a film forming effect, so that a stable SEI film can be formed on a negative electrode, the side reaction between the electrode and the electrolyte is effectively reduced, and the battery performance is improved; however, the film formed by the tetraenylsilane on the electrode is compact, so that the film impedance is large, and the SEI film formed by the tetraenylsilane and the negative electrode is modified by adding the trimethoxyboroxine, so that the internal resistance of the battery is reduced, and the cycle and storage performance of the battery are improved.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery non-aqueous electrolyte and a lithium ion battery.
Background
Along with the progress of human civilization, people are increasingly going to high-quality and high-safety living standard, the development of new energy automobiles, power energy storage and high-performance digital products is a necessary condition for improving the quality of life of people, lithium ion batteries are widely applied to human life due to the advantages of high energy density, high average output voltage, high output power, small self-discharge, excellent cycle performance, quick charge and discharge, high charging efficiency, wide working temperature range and the like, and the problems reflected by the lithium ion batteries are more and more, especially the problems exposed by the batteries at high temperature along with the increasing demand. Therefore, the method is especially important for improving the high-temperature performance of the lithium ion battery.
Disclosure of Invention
The invention aims to provide a lithium ion battery non-aqueous electrolyte and a lithium ion battery thereof.
A nonaqueous electrolyte for a lithium ion battery, comprising: lithium salt, organic solvent, tetravinyl silane and trimethoxy boron oxygen ester.
The tetravinylsilane structure is as follows:
the structure of the trimethoxyboroxine is as follows:
the content of the tetravinyl silane is 0.01-1%, and the content of the trimethoxyboroxine is 0.01-1%, based on the total mass of the lithium ion battery non-aqueous electrolyte as 100%.
The mass ratio of the tetravinyl silane to the trimethoxyboroxine is 1: (1-10), preferably in a weight ratio of 1: (2-5).
The organic solvent is selected from any one or the combination of at least two of ethylene carbonate, propylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate or propyl methyl carbonate.
The lithium ion battery non-aqueous electrolyte also comprises one or the combination of at least two of vinylene carbonate, ethylene carbonate, 1, 3-propane sultone and 1, 4-butane sultone.
The lithium ion battery non-aqueous electrolyte also comprises lithium salt additives LiTFSi, LiBOB, LiFSI, LiODFB and LiBF4、LiPO2F2Or a combination of at least two of the foregoing.
The lithium ion battery non-aqueous electrolyte accounts for 100 percent of the total mass of the lithium ion battery non-aqueous electrolyte, and the mass percentage content of the lithium salt additive is 0.1 to 5 percent.
The lithium salt is LiPF6LiPF (lithium ion power) based on the total mass of the nonaqueous electrolyte of the lithium ion battery as 100 percent6The mass percentage of the components is 0.1-20%.
A lithium ion battery comprises a positive electrode, a negative electrode, a diaphragm arranged between the positive electrode and the negative electrode, and electrolyte, wherein the electrolyte is the lithium ion battery non-aqueous electrolyte.
The positive electrode comprises an active material, and the active material is LiNixCoyMnzL(1-x-y-z)O2、LiCox'L(1-x')O2、LiNix”Ly'Mn(2-x”-y')O4、Liz'MPO4At least one of; wherein L is at least one of Co, Al, Sr, Mg, Ti, Ca, Zr, Zn, Si and Fe, x is more than or equal to 0 and less than or equal to 1, y is more than or equal to 0 and less than or equal to 1, z is more than 0 and less than or equal to 1, x + y + z is more than 0 and less than or equal to 1, x 'is more than 0 and less than or equal to 1, x is more than 0.3 and less than or equal to 0.6, and y' is more than 0.01 and less than or equal to 0.2; z' is more than or equal to 0.5 and less than or equal to 1, and M is at least one of Fe, Mn and Co.
In the present invention, the positive electrode, the negative electrode, and the separator are not particularly limited, and any of the positive electrode, the negative electrode, and the separator that are conventional in the art can be used.
The lithium ion battery non-aqueous electrolyte provided by the invention effectively improves the cycle and high-temperature storage performance of the battery, and the lithium ion battery containing the non-aqueous electrolyte has excellent cycle performance and high-temperature storage performance.
The invention has the beneficial effects that: in the non-aqueous electrolyte of the lithium ion battery, the additive of the tetraenylsilane has a film forming effect, so that a stable SEI film can be formed on a negative electrode, the side reaction between the electrode and the electrolyte is effectively reduced, and the battery performance is improved; however, the film formed by the tetraenylsilane on the electrode is compact, so that the film impedance is large, and the SEI film formed by the tetraenylsilane and the negative electrode is modified by adding the trimethoxyboroxine, so that the internal resistance of the battery is reduced, and the cycle and storage performance of the battery are improved.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example 1
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 2
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 3
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 4
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 5
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 6
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 7
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Example 8
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP separator and an electrolyte, wherein the electrolyte is a nonaqueous electrolyte, and the total weight of the nonaqueous electrolyte is 100%, and the nonaqueous electrolyte contains the components shown in the mass table 1Percentage composition and 12% LiPF6And (3) salt.
Example 9
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Comparative example 1
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Comparative example 2
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Comparative example 3
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP (polypropylene) diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyte, the total weight of the non-aqueous electrolyte is 100%, and the artificial graphite battery contains the components with the mass percentage contents shown in the table 1 and 12% of LiPF (lithium ion plasma display panel)6And (3) salt.
Comparative example 4
LiNi0.6Co0.2Mn0.2O2An artificial graphite battery comprises a ternary NCM622 positive electrode material, an artificial graphite negative electrode, a PP diaphragm and an electrolyte, wherein the electrolyte is a non-aqueous electrolyteAnd the total weight of the nonaqueous electrolyte is 100%, and the nonaqueous electrolyte contains the components with the mass percentage content shown in the table 1 and 12% of LiPF6And (3) salt.
The performance tests of the examples 1-9 and the comparative examples 1-4 of the invention are carried out, and the test indexes and the test method are as follows:
(1) the cycle performance is shown by testing the capacity retention rate of 1C cycle at 45 ℃ for N times, and the specific method comprises the following steps: the fabricated battery was charged to 4.35V (LiNi) at 45 ℃ with a 1C constant current and a constant voltage0.6Co0.2Mn0.2O2Artificial graphite), the off current was 0.02C, and then the discharge was made to 2.75V with a constant current of 1C. After such charge/discharge cycles, the capacity retention rate after 200 weeks' cycles was calculated to evaluate the high-temperature cycle performance thereof.
The calculation formula of the capacity retention rate after 200 cycles at 45 ℃ is as follows:
the 200 th cycle capacity retention (%) was (200 th cycle discharge capacity/1 st cycle discharge capacity) × 100%
(2) The cycle performance is shown by testing the capacity retention rate of the cycle at 25 ℃ and 1C for N times, and the specific method comprises the following steps: the battery after formation (which can be used after the battery is activated) is charged to 4.35V (LiNi) at 25 ℃ with a constant current and a constant voltage of 1C0.6Co0.2Mn0.2O2Artificial graphite), the off current was 0.02C, and then the discharge was made to 2.75V with a constant current of 1C. After such charge/discharge cycles, the capacity retention rate after 200 weeks' cycles was calculated to evaluate the normal temperature cycle performance.
The calculation formula of the capacity retention rate after 200 cycles at 25 ℃ is as follows:
capacity retention (%) at 100 th cycle (200 th cycle discharge capacity/1 st cycle discharge capacity) × 100%
(3) Method for testing capacity retention rate, capacity recovery rate and thickness expansion rate after 30 days of storage at 60 ℃: charging the formed battery to 4.35V (LiNi) at normal temperature by using a 1C constant current and constant voltage0.6Co0.2Mn0.2O2Artificial graphite) with cutoff current of 0.02C, discharging to 2.75V with 1C constant current, measuring initial discharge capacity of the battery, charging to 4.35V with 1C constant current and constant voltage, and cutting off currentThe initial thickness of the battery was measured at 0.02C, and then after the battery was stored at 60℃ for 30 days, the thickness of the battery was measured, and then discharged at a constant current of 1C to 2.75V, the retention capacity of the battery was measured, and then charged at a constant current and constant voltage of 1C to 4.35V, the recovery capacity was measured at 0.02C, and then discharged at a constant current of 1C to 2.75V. The calculation formulas of the capacity retention rate, the capacity recovery rate and the thickness expansion are as follows:
battery capacity retention (%) retention capacity/initial capacity × 100%
Battery capacity recovery (%) -recovery capacity/initial capacity X100%
Battery thickness swelling ratio (%) (thickness after 30 days-initial thickness)/initial thickness × 100%
TABLE 1
The test results of experimental examples 1 to 9 and comparative examples 1 to 4 are shown in table 2 below.
TABLE 2
According to the results shown in table 2, it can be seen that, by adding the additive of the nonaqueous lithium ion battery electrolyte, the high-temperature performance of the battery is obviously improved, but the influence of the additive on the internal resistance of the battery is large, so that the capacity retention rate of the battery after high-temperature storage is low, but by adding the additive of trimethoxyboroxine, the problem of the internal resistance of the battery caused by adding the tetravinylsilane is greatly improved, and the high-temperature performance and the cycle performance of the battery are better improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A nonaqueous electrolyte for a lithium ion battery, comprising: lithium salt, organic solvent, tetravinyl silane and trimethoxy boron oxygen ester.
2. The nonaqueous electrolyte solution for lithium ion batteries according to claim 1, wherein the content of the tetravinylsilane is 0.01 to 1% and the content of the trimethoxyboroxine is 0.01 to 1% based on 100% of the total mass of the nonaqueous electrolyte solution for lithium ion batteries.
3. The nonaqueous electrolyte solution for the lithium ion battery of claim 1, wherein the mass ratio of the tetravinylsilane to the trimethoxyboroxine is 1: (1-10).
4. The nonaqueous electrolyte solution for a lithium ion battery according to claim 1, wherein the organic solvent is selected from any one of ethylene carbonate, propylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, or propylmethyl carbonate, or a combination of at least two thereof.
5. The nonaqueous electrolyte solution for lithium-ion batteries according to claim 1, wherein the nonaqueous electrolyte solution for lithium-ion batteries further comprises one or a combination of at least two of vinylene carbonate, ethylene carbonate, 1, 3-propane sultone, and 1, 4-butane sultone.
6. The nonaqueous electrolyte solution for lithium ion batteries according to claim 1, wherein the nonaqueous electrolyte solution for lithium ion batteries further comprises lithiumSalt additives LiTFSi, LiBOB, LiFSI, LiODFB and LiBF4、LiPO2F2Or a combination of at least two of the foregoing.
7. The nonaqueous electrolyte solution for lithium ion batteries according to claim 6, wherein the lithium salt-based additive is contained in an amount of 0.1 to 5% by mass based on 100% by mass of the total mass of the nonaqueous electrolyte solution for lithium ion batteries.
8. The nonaqueous electrolyte solution for lithium ion batteries according to claim 1, wherein the lithium salt is LiPF6LiPF (lithium ion power) based on the total mass of the nonaqueous electrolyte of the lithium ion battery as 100 percent6The mass percentage of the components is 0.1-20%.
9. A lithium ion battery comprising a positive electrode, a negative electrode, a separator provided between the positive electrode and the negative electrode, and an electrolytic solution, wherein the electrolytic solution is the lithium ion battery nonaqueous electrolytic solution according to claim 1.
10. The lithium ion battery of claim 9, wherein the positive electrode comprises an active material that is LiNixCoyMnzL(1-x-y-z)O2、LiCox'L(1-x')O2、LiNix”Ly'Mn(2-x”-y')O4、Liz'MPO4At least one of; wherein L is at least one of Co, Al, Sr, Mg, Ti, Ca, Zr, Zn, Si and Fe, x is more than or equal to 0 and less than or equal to 1, y is more than or equal to 0 and less than or equal to 1, z is more than 0 and less than or equal to 1, x + y + z is more than 0 and less than or equal to 1, x 'is more than 0 and less than or equal to 1, x is more than 0.3 and less than or equal to 0.6, and y' is more than 0.01 and less than or equal to 0.2; z' is more than or equal to 0.5 and less than or equal to 1, and M is at least one of Fe, Mn and Co.
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| CN109075387A (en) * | 2017-01-20 | 2018-12-21 | 株式会社Lg化学 | Non-aqueous electrolytic solution for lithium secondary battery and the lithium secondary battery including the non-aqueous electrolytic solution |
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| JP2019175576A (en) * | 2018-03-27 | 2019-10-10 | 三井化学株式会社 | Nonaqueous electrolyte solution for battery and lithium secondary battery |
| CN113161613A (en) * | 2021-04-19 | 2021-07-23 | 杉杉新材料（衢州）有限公司 | Lithium ion battery non-aqueous electrolyte and lithium ion battery |
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