CN109860706A - A kind of nonaqueous electrolytic solution and the lithium ion battery containing the electrolyte - Google Patents
A kind of nonaqueous electrolytic solution and the lithium ion battery containing the electrolyte Download PDFInfo
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- CN109860706A CN109860706A CN201811553176.4A CN201811553176A CN109860706A CN 109860706 A CN109860706 A CN 109860706A CN 201811553176 A CN201811553176 A CN 201811553176A CN 109860706 A CN109860706 A CN 109860706A
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- additive
- electrolytic solution
- nonaqueous electrolytic
- electrolyte
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 39
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 30
- 239000008151 electrolyte solution Substances 0.000 title claims abstract description 28
- 239000000654 additive Substances 0.000 claims abstract description 50
- 230000000996 additive effect Effects 0.000 claims abstract description 50
- 206010016766 flatulence Diseases 0.000 claims abstract description 13
- -1 nitrile compounds Chemical class 0.000 claims abstract description 12
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 230000005764 inhibitory process Effects 0.000 claims abstract description 9
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical class O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011356 non-aqueous organic solvent Substances 0.000 claims abstract description 7
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 6
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 6
- FSSPGSAQUIYDCN-UHFFFAOYSA-N 1,3-Propane sultone Chemical compound O=S1(=O)CCCO1 FSSPGSAQUIYDCN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000001639 boron compounds Chemical class 0.000 claims abstract description 4
- LXQJDZXMYIZZMQ-UHFFFAOYSA-N but-1-en-3-yne;carbonic acid Chemical compound C=CC#C.OC(O)=O LXQJDZXMYIZZMQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- VEWLDLAARDMXSB-UHFFFAOYSA-N ethenyl sulfate;hydron Chemical compound OS(=O)(=O)OC=C VEWLDLAARDMXSB-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 4
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N methyl pentane Natural products CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 4
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 claims description 3
- 150000001345 alkine derivatives Chemical class 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 150000005840 aryl radicals Chemical class 0.000 claims description 3
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 3
- 150000002825 nitriles Chemical class 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- UHOPWFKONJYLCF-UHFFFAOYSA-N 2-(2-sulfanylethyl)isoindole-1,3-dione Chemical compound C1=CC=C2C(=O)N(CCS)C(=O)C2=C1 UHOPWFKONJYLCF-UHFFFAOYSA-N 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- GTTGLTZAOFBCRM-UHFFFAOYSA-N P(O)(O)(O)=O.C[SiH](C)C Chemical class P(O)(O)(O)=O.C[SiH](C)C GTTGLTZAOFBCRM-UHFFFAOYSA-N 0.000 claims description 2
- UOIZEJXVVUGVNB-UHFFFAOYSA-N P(O)(O)O.C[SiH](C)C Chemical class P(O)(O)O.C[SiH](C)C UOIZEJXVVUGVNB-UHFFFAOYSA-N 0.000 claims description 2
- QRMHDYCPNIVCBO-UHFFFAOYSA-N [SH2]=N.[F] Chemical compound [SH2]=N.[F] QRMHDYCPNIVCBO-UHFFFAOYSA-N 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 229960002645 boric acid Drugs 0.000 claims description 2
- 235000010338 boric acid Nutrition 0.000 claims description 2
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- DEUISMFZZMAAOJ-UHFFFAOYSA-N lithium dihydrogen borate oxalic acid Chemical compound B([O-])(O)O.C(C(=O)O)(=O)O.C(C(=O)O)(=O)O.[Li+] DEUISMFZZMAAOJ-UHFFFAOYSA-N 0.000 claims description 2
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 2
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 229940090181 propyl acetate Drugs 0.000 claims description 2
- PNGLEYLFMHGIQO-UHFFFAOYSA-M sodium;3-(n-ethyl-3-methoxyanilino)-2-hydroxypropane-1-sulfonate;dihydrate Chemical group O.O.[Na+].[O-]S(=O)(=O)CC(O)CN(CC)C1=CC=CC(OC)=C1 PNGLEYLFMHGIQO-UHFFFAOYSA-M 0.000 claims description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 2
- 150000003457 sulfones Chemical class 0.000 claims description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 2
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 125000005586 carbonic acid group Chemical group 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000007086 side reaction Methods 0.000 abstract description 3
- 239000007772 electrode material Substances 0.000 abstract description 2
- 239000002001 electrolyte material Substances 0.000 abstract description 2
- 125000002467 phosphate group Chemical class [H]OP(=O)(O[H])O[*] 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 22
- 239000003795 chemical substances by application Substances 0.000 description 7
- 101100537779 Homo sapiens TPM2 gene Proteins 0.000 description 4
- 102100036471 Tropomyosin beta chain Human genes 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- IAHFWCOBPZCAEA-UHFFFAOYSA-N succinonitrile Chemical group N#CCCC#N IAHFWCOBPZCAEA-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- YKOWROBULMNQMD-UHFFFAOYSA-N [Li].[SH2]=N.FC Chemical compound [Li].[SH2]=N.FC YKOWROBULMNQMD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- DZMOLBFHXFZZBF-UHFFFAOYSA-N prop-2-enyl dihydrogen phosphate Chemical compound OP(O)(=O)OCC=C DZMOLBFHXFZZBF-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
Abstract
A kind of nonaqueous electrolytic solution and the lithium ion battery containing the electrolyte, belong to electrolyte studying technological domain.The electrolyte, including non-aqueous organic solvent, electric conducting lithium salt and additive, the additive includes accounting for 0.1%~10% cathode film formation additive of electrolyte total weight, account for the positive film for additive of electrolyte total weight 0.1%~10% and accounting for the inhibition flatulence additive of electrolyte total weight 0.1%~5%, the cathode film formation additive includes at least one of vinyl vinylene carbonate, fluorinated ethylene carbonate, sulfuric acid vinyl ester, 1,3-propane sultone and vinylene carbonate；The positive film for additive is nitrile compounds, phosphate compounds and at least one of containing boron compound.The present invention reduces batteries in storage and cyclic process, and side reaction occurs for electrolyte and electrode material, it is suppressed that battery flatulence, to significantly improve battery storage and cycle life.
Description
Technical field
The invention belongs to electrolyte studying technological domains, and in particular to a kind of nonaqueous electrolytic solution and the lithium containing the electrolyte
Ion battery.
Background technique
Lithium ion battery is since commercialization, since its specific energy is high, good cycle, be widely used in it is digital,
The fields such as energy storage, power, militay space flight and communication apparatus.With the extensive use of lithium ion battery, consumer is to battery storage
It is put forward higher requirements with cycle life.But lithium ion battery, in long term storage and cyclic process, inside battery is easy to produce
Angry body, and then influence the storage and cycle life of battery.This is because the electrolyte inside battery is easy to send out with battery material
Raw side reaction, generates gas.Nonaqueous electrolytic solution is the key reason for influencing battery performance, is carried out to the additive in electrolyte excellent
Change and combination can significantly inhibit battery producing gas, and then improve the storage and cycle life of battery.
Summary of the invention
The purpose of the present invention is to solve flatulence is easy to happen inside current battery, a kind of non-aqueous solution electrolysis is provided
Liquid and lithium ion battery containing the electrolyte, this kind of nonaqueous electrolytic solution storage and cycle performance are excellent, use the electrolyte
Lithium ion battery has excellent storage and cycle life.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of nonaqueous electrolytic solution, including non-aqueous organic solvent, electric conducting lithium salt and additive, the additive include accounting for electricity
The anode film forming addition for solving the cathode film formation additive of liquid total weight 0.1%~10%, accounting for electrolyte total weight 0.1%~10%
Agent and the inhibition flatulence additive for accounting for electrolyte total weight 0.1%~5%, the cathode film formation additive includes vinyl carbon
At least one in sour vinylene, fluorinated ethylene carbonate, sulfuric acid vinyl ester, 1,3-propane sultone and vinylene carbonate
Kind；The positive film for additive is nitrile compounds, phosphate compounds and at least one of containing boron compound；
The inhibition flatulence additive is silicon amine compounds, has the substance of chemical structural formula shown in formula (I) and/or (II):
In formula (I) and formula (II), R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are independent to be selected from
Any one in hydrogen, alkyl, alkyl halide alkyl, alkylene, alkynes base, aryl radical or halogenated aromatic alkyl.
A kind of lithium ion battery containing above-mentioned nonaqueous electrolytic solution, the lithium ion battery include anode, cathode, every
Film, nonaqueous electrolytic solution.
The beneficial effect of the present invention compared with the existing technology is: by positive film for additive, cathode film formation additive and
Inhibit the synergistic effect between flatulence additive, reduce battery in storage and cyclic process, electrolyte and electrode material are sent out
Raw side reaction, it is suppressed that battery flatulence, to significantly improve battery storage and cycle life.
Specific embodiment
Below with reference to embodiment, further description of the technical solution of the present invention, and however, it is not limited to this, all right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be contained
Lid is within the protection scope of the present invention.
Specific embodiment 1: present embodiment record is a kind of nonaqueous electrolytic solution, including non-aqueous organic solvent, conduction
Lithium salts and additive, the additive include the cathode film formation additive for accounting for electrolyte total weight 0.1%~10%, account for electrolysis
The positive film for additive of liquid total weight 0.1%~10% and the inhibition flatulence addition for accounting for electrolyte total weight 0.1%~5%
Agent, the cathode film formation additive include vinyl vinylene carbonate (VEC), fluorinated ethylene carbonate (FEC), sulfuric acid second
At least one of enester (DTD), 1,3-propane sultone (PS) and vinylene carbonate (VC)；The anode film forming addition
Agent is nitrile compounds, phosphate compounds and at least one of containing boron compound；The inhibition flatulence additive
For silicon amine compounds, the substance with chemical structural formula shown in formula (I) and/or (II):
In formula (I) and formula (II), R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are independent to be selected from
Any one in hydrogen, alkyl, alkyl halide alkyl, alkylene, alkynes base, aryl radical or halogenated aromatic alkyl.
Specific embodiment 2: a kind of nonaqueous electrolytic solution described in specific embodiment one,
Any one of the chemical structure formula (I) in following T1~T5 compound；
Any one of the chemical structure formula (II) in following T6~T10 compound；
Specific embodiment 3: a kind of nonaqueous electrolytic solution described in specific embodiment one, the anode film forming addition
Agent is succinonitrile (SN), adiponitrile (ADN), 1,3,6- hexane, three nitrile (HTCN), three (trimethyl silane) phosphates (TMSB), three
(trimethyl silane) phosphite ester (TMSP), allyl phosphate, difluorine oxalic acid boracic acid lithium (LiODFB), di-oxalate lithium borate
One or more of (LiBOB) mixture.
Specific embodiment 4: a kind of nonaqueous electrolytic solution described in specific embodiment one, the anode film forming addition
Agent accounts for the 0.5%~5% of electrolyte total weight.
Specific embodiment 5: a kind of nonaqueous electrolytic solution described in specific embodiment one, the cathode film formation addition
Agent accounts for the 0.5%~5% of electrolyte total weight.
Specific embodiment 6: a kind of nonaqueous electrolytic solution described in specific embodiment one, the inhibition flatulence addition
Agent accounts for the 0.1%~2% of electrolyte total weight.
Specific embodiment 7: a kind of nonaqueous electrolytic solution described in specific embodiment one, the non-aqueous organic solvent
For ethylene carbonate (EC), propene carbonate (PC), methyl ethyl carbonate (EMC), dimethyl carbonate (DMC), diethyl carbonate
(DEC), ethyl acetate (EA), propyl acetate (EP), propyl propionate (PP), ethyl propionate (PA), sulfolane, one in positive fourth sulfone
Kind or several mixtures.
Specific embodiment 8: a kind of nonaqueous electrolytic solution described in specific embodiment one, the electric conducting lithium salt is six
Lithium fluophosphate (LiPF6), lithium perchlorate (LiClO4), double fluorine sulfimide lithiums (LiFSI), LiBF4 (LiBF4), double three
The mixture of one or more of fluoromethane sulfimide lithium (LiTFSI).
Specific embodiment 9: a kind of contain non-water power described in any specific embodiment of specific embodiment one to eight
The lithium ion battery of liquid is solved, the lithium ion battery includes anode, cathode, diaphragm, nonaqueous electrolytic solution.
Comparative example 1
Non-aqueous organic solvent ethylene carbonate/methyl ethyl carbonate/diethyl carbonate 2:5:3 in mass ratio is mixed, by electricity
The T1 that liquid gross mass calculates the addition 1% inside mixed liquor is solved, 2% VC is eventually adding 13% hexafluorophosphoric acid as additive
Lithium obtains 1 electrolyte of comparative example.It injects the electrolyte into the battery core of the non-fluid injection comprising positive plate, negative electrode tab and diaphragm, is made
Lithium ion battery obtains 1 battery of comparative example.
Comparative example 2
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 1%
The LiBOB of T2 and 1%.
Comparative example 3
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 1%
The TMSP of PS and 1%.
Embodiment 1
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 0.5%
VEC, 1% LiBOB and 0.1% T1.
Embodiment 2
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 5%
FEC, 0.5% LiODFB and 2% T2.
Embodiment 3
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 2%
FEC, 2% PS, 0.5% TMSB, 2% SN and 1.5% T3.
Embodiment 4
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 1%
DTD, 2% AND, 1% TMSP, 1% LiODFB and 0.5% T4.
Embodiment 5
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 2%
VC, 0.5% acrylic phosphate and 1.5% T5.
Embodiment 6
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 1%
The T6 of VC, 0.5% DTD, 1% HTCN and 0.1%.
Embodiment 7
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 2%
PS, 2% TMSB and 0.3% T7.
Embodiment 8
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 1%
The T8 of FEC, 2% PS, 1% LiODFB and 1.5%.
Embodiment 9
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 2%
The T9 of FEC, 1% SN, 2% AND and 1%.
Embodiment 10
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 3%
The T10 of FEC, 2% PS, 1% LiODFB and 1%.
Embodiment 11
Using lithium ion battery used in comparative example 1.The difference is that the additive being added is to account for electrolyte total weight 1%
The T2 of VEC, 1% TMSB, 0.2% T1 and 0.5%.
Electrochemical property test is carried out to the above comparative example and the resulting lithium ion battery of embodiment
High temperature storage experiment:
Embodiment 1~11 and 1~3 gained battery of comparative example are subjected to 5 charge and discharges at room temperature with the charge-discharge magnification of 1C
Electric loop test, then 1C multiplying power is charged to full power state.1C capacity Q and cell thickness T is recorded respectively.By the battery of full power state
It is stored 14 days at 60 DEG C, records cell thickness T0With 1C discharge capacity Q1, then by battery at room temperature with the multiplying power charge and discharge of 1C
5 weeks, record 1C discharge capacity Q2, battery high-temperature memory capacity conservation rate, capacity restoration rate and thickness change etc. is calculated
Experimental data records result such as table 1.
The calculation formula wherein used is as follows:
Loop test:
Embodiment 1~11 and 1~3 gained battery of comparative example are subjected to charge and discharge at room temperature with the charge-discharge magnification of 1C/1C
Electricity circulation 500 times, record cyclic discharge capacity and divided by recycle for the 1st time discharge capacity to get capacity retention ratio, record circulation
Cell thickness records result table 1 divided by cell thickness before recycling to get thickness change afterwards.
The comparison of 1 embodiment and comparative example experimental result of table
As can be seen from Table 1: obviously being changed using the storage of the lithium ion battery of electrolyte of the present invention and cycle performance
It is kind.The above embodiment is a preferred embodiment of the present invention, but embodiment of the present invention are not limited by the above embodiments,
It is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitution, combination and simplify, should all
For equivalent substitute mode, it is included within the scope of the present invention.
Claims (9)
1. a kind of nonaqueous electrolytic solution, including non-aqueous organic solvent, electric conducting lithium salt and additive, the additive includes accounting for electrolysis
The cathode film formation additive of liquid total weight 0.1%~10%, the positive film for additive for accounting for electrolyte total weight 0.1%~10%
With the inhibition flatulence additive for accounting for electrolyte total weight 0.1%~5%, it is characterised in that: the cathode film formation additive packet
It includes in vinyl vinylene carbonate, fluorinated ethylene carbonate, sulfuric acid vinyl ester, 1,3-propane sultone and vinylene carbonate
At least one；The positive film for additive is for nitrile compounds, phosphate compounds and containing in boron compound
It is at least one；The inhibition flatulence additive is silicon amine compounds, has chemical structural formula shown in formula (I) and/or (II)
Substance:
In formula (I) and formula (II), R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are independent to be selected from hydrogen, alkane
Any one in alkyl, alkyl halide alkyl, alkylene, alkynes base, aryl radical or halogenated aromatic alkyl.
2. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that:
Any one of the chemical structure formula (I) in following T1~T5 compound；
Any one of the chemical structure formula (II) in following T6~T10 compound；
3. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that: the positive film for additive is fourth two
Nitrile, adiponitrile, 1,3,6- hexane, three nitrile, three (trimethyl silane) phosphates, three (trimethyl silane) phosphite esters, allyl phosphorus
The mixture of one or more of acid esters, difluorine oxalic acid boracic acid lithium, di-oxalate lithium borate.
4. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that: the positive film for additive accounts for electrolysis
The 0.5%~5% of liquid total weight.
5. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that: the cathode film formation additive accounts for electrolysis
The 0.5%~5% of liquid total weight.
6. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that: the inhibition flatulence additive accounts for electrolysis
The 0.1%~2% of liquid total weight.
7. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that: the non-aqueous organic solvent is carbonic acid second
Enester, propene carbonate, methyl ethyl carbonate, dimethyl carbonate, diethyl carbonate, ethyl acetate, propyl acetate, propyl propionate,
The mixture of one or more of ethyl propionate, sulfolane, positive fourth sulfone.
8. a kind of nonaqueous electrolytic solution according to claim 1, it is characterised in that: the electric conducting lithium salt is hexafluorophosphoric acid
One or more of lithium, lithium perchlorate, double fluorine sulfimide lithiums, LiBF4, double trifluoromethanesulfonimide lithiums mix
Close object.
9. a kind of lithium ion battery containing nonaqueous electrolytic solution described in claim 1~8 any claim, feature exist
In: the lithium ion battery includes anode, cathode, diaphragm, nonaqueous electrolytic solution.
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| CN114552007A (en) * | 2022-02-18 | 2022-05-27 | 香河昆仑新能源材料股份有限公司 | Non-aqueous electrolyte of lithium ion battery and lithium ion battery |
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| CN115441056B (en) * | 2022-09-27 | 2024-12-10 | 华中科技大学 | A sodium ion battery electrolyte for high voltage layered oxide cathodes |
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| CN118589052A (en) * | 2024-08-02 | 2024-09-03 | 比亚迪股份有限公司 | An electrolyte and its application |
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Address after: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant after: ZHUHAI COSLIGHT BATTERY Co.,Ltd. Address before: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
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Address after: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant after: Zhuhai CosMX Battery Co.,Ltd. Address before: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
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Application publication date: 20190607 |