CN115863765A - Electrolyte and battery comprising same - Google Patents
Electrolyte and battery comprising same Download PDFInfo
- Publication number
- CN115863765A CN115863765A CN202211674369.1A CN202211674369A CN115863765A CN 115863765 A CN115863765 A CN 115863765A CN 202211674369 A CN202211674369 A CN 202211674369A CN 115863765 A CN115863765 A CN 115863765A
- Authority
- CN
- China
- Prior art keywords
- ether
- lithium
- electrolyte
- ethylene glycol
- dimethyl ether
- 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.)
- Pending
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 37
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 42
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000654 additive Substances 0.000 claims description 30
- 230000000996 additive effect Effects 0.000 claims description 29
- -1 lithium hexafluorophosphate Chemical compound 0.000 claims description 20
- 229910021645 metal ion Inorganic materials 0.000 claims description 20
- 239000002904 solvent Substances 0.000 claims description 13
- 230000002195 synergetic effect Effects 0.000 claims description 11
- 239000003085 diluting agent Substances 0.000 claims description 10
- 229910003002 lithium salt Inorganic materials 0.000 claims description 10
- 159000000002 lithium salts Chemical class 0.000 claims description 10
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 5
- FCGXLCNBWYIEAA-UHFFFAOYSA-N 1,3-benzothiazol-6-ylmethanamine Chemical compound NCC1=CC=C2N=CSC2=C1 FCGXLCNBWYIEAA-UHFFFAOYSA-N 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 claims description 4
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 4
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 150000003949 imides Chemical class 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- PEUUVVGQIVMSAW-RZTYQLBFSA-N (+)-Eudesmin Chemical compound C1=C(OC)C(OC)=CC=C1[C@@H]1[C@@H](CO[C@@H]2C=3C=C(OC)C(OC)=CC=3)[C@@H]2CO1 PEUUVVGQIVMSAW-RZTYQLBFSA-N 0.000 claims description 2
- PGISRKZDCUNMRX-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4-nonafluoro-4-(trifluoromethoxy)butane Chemical compound FC(F)(F)OC(F)(F)C(F)(F)C(F)(F)C(F)(F)F PGISRKZDCUNMRX-UHFFFAOYSA-N 0.000 claims description 2
- OLXJWIOOAUUDHX-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-4-prop-2-enoxybutane Chemical compound FC(F)(F)C(F)(F)C(F)(F)COCC=C OLXJWIOOAUUDHX-UHFFFAOYSA-N 0.000 claims description 2
- CYIGRWUIQAVBFG-UHFFFAOYSA-N 1,2-bis(2-ethenoxyethoxy)ethane Chemical compound C=COCCOCCOCCOC=C CYIGRWUIQAVBFG-UHFFFAOYSA-N 0.000 claims description 2
- SNAQINZKMQFYFV-UHFFFAOYSA-N 1-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]butane Chemical compound CCCCOCCOCCOCCOC SNAQINZKMQFYFV-UHFFFAOYSA-N 0.000 claims description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 2
- OJCFEGKCRWEVSN-UHFFFAOYSA-N 2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCO OJCFEGKCRWEVSN-UHFFFAOYSA-N 0.000 claims description 2
- UPGSWASWQBLSKZ-UHFFFAOYSA-N 2-hexoxyethanol Chemical compound CCCCCCOCCO UPGSWASWQBLSKZ-UHFFFAOYSA-N 0.000 claims description 2
- QVQDALFNSIKMBH-UHFFFAOYSA-N 2-pentoxyethanol Chemical compound CCCCCOCCO QVQDALFNSIKMBH-UHFFFAOYSA-N 0.000 claims description 2
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 claims description 2
- 229910015900 BF3 Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- PEUUVVGQIVMSAW-UHFFFAOYSA-N Diaeudesmin Natural products C1=C(OC)C(OC)=CC=C1C1C(COC2C=3C=C(OC)C(OC)=CC=3)C2CO1 PEUUVVGQIVMSAW-UHFFFAOYSA-N 0.000 claims description 2
- WPMWEFXCIYCJSA-UHFFFAOYSA-N Tetraethylene glycol monododecyl ether Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCO WPMWEFXCIYCJSA-UHFFFAOYSA-N 0.000 claims description 2
- 239000007983 Tris buffer Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 2
- 125000001033 ether group Chemical group 0.000 claims description 2
- TUEYHEWXYWCDHA-UHFFFAOYSA-N ethyl 5-methylthiadiazole-4-carboxylate Chemical compound CCOC(=O)C=1N=NSC=1C TUEYHEWXYWCDHA-UHFFFAOYSA-N 0.000 claims description 2
- SFNALCNOMXIBKG-UHFFFAOYSA-N ethylene glycol monododecyl ether Chemical compound CCCCCCCCCCCCOCCO SFNALCNOMXIBKG-UHFFFAOYSA-N 0.000 claims description 2
- MRVHOJHOBHYHQL-UHFFFAOYSA-M lithium metaphosphate Chemical compound [Li+].[O-]P(=O)=O MRVHOJHOBHYHQL-UHFFFAOYSA-M 0.000 claims description 2
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 2
- CWFAFDCTBAYTFA-UHFFFAOYSA-M lithium;2-propylpentanoate Chemical compound [Li+].CCCC(C([O-])=O)CCC CWFAFDCTBAYTFA-UHFFFAOYSA-M 0.000 claims description 2
- ACFSQHQYDZIPRL-UHFFFAOYSA-N lithium;bis(1,1,2,2,2-pentafluoroethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)C(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)C(F)(F)F ACFSQHQYDZIPRL-UHFFFAOYSA-N 0.000 claims description 2
- MCVFFRWZNYZUIJ-UHFFFAOYSA-M lithium;trifluoromethanesulfonate Chemical compound [Li+].[O-]S(=O)(=O)C(F)(F)F MCVFFRWZNYZUIJ-UHFFFAOYSA-M 0.000 claims description 2
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 2
- 239000011575 calcium Substances 0.000 claims 2
- 229910052791 calcium Inorganic materials 0.000 claims 2
- 239000011777 magnesium Substances 0.000 claims 2
- 229910052749 magnesium Inorganic materials 0.000 claims 2
- 229910052700 potassium Inorganic materials 0.000 claims 2
- 239000011591 potassium Substances 0.000 claims 2
- GDXHBFHOEYVPED-UHFFFAOYSA-N 1-(2-butoxyethoxy)butane Chemical compound CCCCOCCOCCCC GDXHBFHOEYVPED-UHFFFAOYSA-N 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- ZUSWDTWYONAOPH-UHFFFAOYSA-N [2-(trifluoromethyl)phenyl]hydrazine;hydrochloride Chemical group [Cl-].[NH3+]NC1=CC=CC=C1C(F)(F)F ZUSWDTWYONAOPH-UHFFFAOYSA-N 0.000 claims 1
- SYRDSFGUUQPYOB-UHFFFAOYSA-N [Li+].[Li+].[Li+].[O-]B([O-])[O-].FC(=O)C(F)=O Chemical compound [Li+].[Li+].[Li+].[O-]B([O-])[O-].FC(=O)C(F)=O SYRDSFGUUQPYOB-UHFFFAOYSA-N 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052792 caesium Inorganic materials 0.000 claims 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 claims 1
- 150000002170 ethers Chemical class 0.000 claims 1
- 229940052303 ethers for general anesthesia Drugs 0.000 claims 1
- 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 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 claims 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000001787 dendrite Anatomy 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- SBLRHMKNNHXPHG-UHFFFAOYSA-N 4-fluoro-1,3-dioxolan-2-one Chemical compound FC1COC(=O)O1 SBLRHMKNNHXPHG-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical group [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical group [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical group [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical group [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical compound [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- NRESDXFFSNBDGP-UHFFFAOYSA-N (4-bromophenyl)hydrazine Chemical compound NNC1=CC=C(Br)C=C1 NRESDXFFSNBDGP-UHFFFAOYSA-N 0.000 description 1
- CUTPKDUMZWIJKT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane Chemical compound FC(F)(F)C(F)OC(F)(F)C(F)(F)C(F)(F)F CUTPKDUMZWIJKT-UHFFFAOYSA-N 0.000 description 1
- OPCORXXVBOOEID-UHFFFAOYSA-N 1,1,1,2,2-pentafluoro-3-prop-2-enoxypropane Chemical compound FC(F)(F)C(F)(F)COCC=C OPCORXXVBOOEID-UHFFFAOYSA-N 0.000 description 1
- HRXXERHTOVVTQF-UHFFFAOYSA-N 1,1,1,2,3,3,3-heptafluoro-2-methoxypropane Chemical compound COC(F)(C(F)(F)F)C(F)(F)F HRXXERHTOVVTQF-UHFFFAOYSA-N 0.000 description 1
- ADXLBHULARLUSE-UHFFFAOYSA-N 1,1,1,2,3,3-hexafluoro-3-prop-2-enoxypropane Chemical compound FC(F)(F)C(F)C(F)(F)OCC=C ADXLBHULARLUSE-UHFFFAOYSA-N 0.000 description 1
- QZFIQARJCSJGEG-UHFFFAOYSA-N 1,1,1,2-tetrafluoro-2-(1,2,2,2-tetrafluoroethoxy)ethane Chemical compound FC(F)(F)C(F)OC(F)C(F)(F)F QZFIQARJCSJGEG-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- LPTNZCGKPZVEHX-UHFFFAOYSA-N 1,1,2,2-tetrafluoro-1-(1,1,2,2-tetrafluoroethoxy)ethane Chemical group FC(F)C(F)(F)OC(F)(F)C(F)F LPTNZCGKPZVEHX-UHFFFAOYSA-N 0.000 description 1
- MEIXYCHYADMPTF-UHFFFAOYSA-N 1,1,2,2-tetrafluoro-3-prop-2-enoxypropane Chemical compound FC(F)C(F)(F)COCC=C MEIXYCHYADMPTF-UHFFFAOYSA-N 0.000 description 1
- ZOUZMRQINDFFOK-UHFFFAOYSA-N 1,2,3,4,5-pentafluoro-6-(2,3,4,5,6-pentafluorophenyl)sulfanylbenzene Chemical compound FC1=C(F)C(F)=C(F)C(F)=C1SC1=C(F)C(F)=C(F)C(F)=C1F ZOUZMRQINDFFOK-UHFFFAOYSA-N 0.000 description 1
- MYRHORGTVILPRU-UHFFFAOYSA-N 1,2,3,4,5-pentafluoro-6-prop-2-enoxybenzene Chemical compound FC1=C(F)C(F)=C(OCC=C)C(F)=C1F MYRHORGTVILPRU-UHFFFAOYSA-N 0.000 description 1
- XVZDYNSMGNIZSS-UHFFFAOYSA-N 1-(2-fluorophenoxy)-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1OC1=CC=CC=C1F XVZDYNSMGNIZSS-UHFFFAOYSA-N 0.000 description 1
- ADGMRCLDJLCOKF-UHFFFAOYSA-N 1-bromo-3-(4-fluorophenoxy)benzene Chemical compound C1=CC(F)=CC=C1OC1=CC=CC(Br)=C1 ADGMRCLDJLCOKF-UHFFFAOYSA-N 0.000 description 1
- HBRLMDFVVMYNFH-UHFFFAOYSA-N 1-ethoxy-1,1,2,2-tetrafluoroethane Chemical compound CCOC(F)(F)C(F)F HBRLMDFVVMYNFH-UHFFFAOYSA-N 0.000 description 1
- MABBMHBZKPIFFV-UHFFFAOYSA-N 1-fluoro-2-prop-2-enoxybenzene Chemical compound FC1=CC=CC=C1OCC=C MABBMHBZKPIFFV-UHFFFAOYSA-N 0.000 description 1
- KERRBVYEVFOYRC-UHFFFAOYSA-N 1-octoxy-2-(trifluoromethyl)benzene Chemical compound CCCCCCCCOC1=CC=CC=C1C(F)(F)F KERRBVYEVFOYRC-UHFFFAOYSA-N 0.000 description 1
- BDLXTDLGTWNUFM-UHFFFAOYSA-N 2-[(2-methylpropan-2-yl)oxy]ethanol Chemical compound CC(C)(C)OCCO BDLXTDLGTWNUFM-UHFFFAOYSA-N 0.000 description 1
- DUPRZIYJXCCXQZ-UHFFFAOYSA-N 2-chloro-4,6-difluoroaniline Chemical compound NC1=C(F)C=C(F)C=C1Cl DUPRZIYJXCCXQZ-UHFFFAOYSA-N 0.000 description 1
- NOTCQEKRIPQPAW-UHFFFAOYSA-N 3-(2,2,2-trifluoroethoxy)prop-1-ene Chemical compound FC(F)(F)COCC=C NOTCQEKRIPQPAW-UHFFFAOYSA-N 0.000 description 1
- PCTQNZRJAGLDPD-UHFFFAOYSA-N 3-(difluoromethoxy)-1,1,2,2-tetrafluoropropane Chemical compound FC(F)OCC(F)(F)C(F)F PCTQNZRJAGLDPD-UHFFFAOYSA-N 0.000 description 1
- OOKYWAXNZYBZER-UHFFFAOYSA-N 3-amino-3-(4-ethoxy-3-methoxyphenyl)propanoic acid Chemical compound CCOC1=CC=C(C(N)CC(O)=O)C=C1OC OOKYWAXNZYBZER-UHFFFAOYSA-N 0.000 description 1
- YJAKQSMNBPYVAT-UHFFFAOYSA-N 4-bromo-2,6-dichlorobenzenesulfonamide Chemical compound NS(=O)(=O)C1=C(Cl)C=C(Br)C=C1Cl YJAKQSMNBPYVAT-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical group [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- PIWKPBJCKXDKJR-UHFFFAOYSA-N Isoflurane Chemical group FC(F)OC(Cl)C(F)(F)F PIWKPBJCKXDKJR-UHFFFAOYSA-N 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical group [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- OQMBBFQZGJFLBU-UHFFFAOYSA-N Oxyfluorfen Chemical compound C1=C([N+]([O-])=O)C(OCC)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 OQMBBFQZGJFLBU-UHFFFAOYSA-N 0.000 description 1
- 239000005590 Oxyfluorfen Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical group [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HFCVPDYCRZVZDF-UHFFFAOYSA-N [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O Chemical compound [Li+].[Co+2].[Ni+2].[O-][Mn]([O-])(=O)=O HFCVPDYCRZVZDF-UHFFFAOYSA-N 0.000 description 1
- SSBFISCARUPWGN-UHFFFAOYSA-N [Li].C(C(=O)F)(=O)F Chemical compound [Li].C(C(=O)F)(=O)F SSBFISCARUPWGN-UHFFFAOYSA-N 0.000 description 1
- NUFNQYOELLVIPL-UHFFFAOYSA-N acifluorfen Chemical compound C1=C([N+]([O-])=O)C(C(=O)O)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 NUFNQYOELLVIPL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- MBUCFVKJCBBWRI-UHFFFAOYSA-N bis(ethylsulfanyl)methanone Chemical compound CCSC(=O)SCC MBUCFVKJCBBWRI-UHFFFAOYSA-N 0.000 description 1
- NCMHKCKGHRPLCM-UHFFFAOYSA-N caesium(1+) Chemical group [Cs+] NCMHKCKGHRPLCM-UHFFFAOYSA-N 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical group [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- OPHUWKNKFYBPDR-UHFFFAOYSA-N copper lithium Chemical compound [Li].[Cu] OPHUWKNKFYBPDR-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- KGPPDNUWZNWPSI-UHFFFAOYSA-N flurotyl Chemical compound FC(F)(F)COCC(F)(F)F KGPPDNUWZNWPSI-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229960002725 isoflurane Drugs 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- ZIRAMZRKLHPLPK-UHFFFAOYSA-N lithium fluorosulfonyl(trifluoromethylsulfonyl)azanide Chemical compound FS(=O)(=O)[N-]S(=O)(=O)C(F)(F)F.[Li+] ZIRAMZRKLHPLPK-UHFFFAOYSA-N 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- KVFIZLDWRFTUEM-UHFFFAOYSA-N potassium;bis(trifluoromethylsulfonyl)azanide Chemical compound [K+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F KVFIZLDWRFTUEM-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000009044 synergistic interaction Effects 0.000 description 1
- RBYFNZOIUUXJQD-UHFFFAOYSA-J tetralithium oxalate Chemical compound [Li+].[Li+].[Li+].[Li+].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O RBYFNZOIUUXJQD-UHFFFAOYSA-J 0.000 description 1
- YQQKTCBMKQQOSM-UHFFFAOYSA-N trifluoromethylsulfanylbenzene Chemical compound FC(F)(F)SC1=CC=CC=C1 YQQKTCBMKQQOSM-UHFFFAOYSA-N 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of lithium ion batteries, and particularly provides an electrolyte and a battery comprising the same. And the loose layer is a lithium-rich layer, so that the mechanical strength caused by the tight layer can be relieved, the softness of an SEI film is enhanced, the conductivity of the electrolyte and the surface of lithium metal is enhanced, and the like, and the cycle performance of the lithium metal battery is improved.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to an electrolyte and a battery comprising the same.
Background
With the development of human life, the demand of various high-tech electronic products is increasing, which has stimulated extensive research on next-generation energy storage materials and chemicals, such as lithium metal batteries, li/ternary, li/oxygen, li/sulfur, solid-state Li batteries. The development of lithium metal batteries is severely hampered by the lower coulombic efficiency and the growth of Li dendrites.
Several strategies are currently used to solve the above problems: 1. optimizing electrolyte and additives; 2. modification research of a negative electrode lithium metal foil; 3. the SEI film was artificially constructed.
The directions of the electrolyte and the additive optimize the local high-concentration electrolyte, and improve the cycle performance and the safety performance of the lithium metal battery. Most of the research is conducted around organic (flexible) SEI films and inorganic (rigid) SEI films, and the inorganic SEI films have the advantages of higher mechanical strength and contribution to improving Li + Diffusion, uniform lithium deposition and effective inhibition of lithium dendrites; the organic SEI film can effectively improve Li under the action of covalent bonds + The diffusion effect of (1). But the lithium phobicity damages the contact surface between Li and the diaphragm, and finally the SEI film becomes fluffy and porous and the current density distribution is not uniform, so that the formation of lithium dendrites is triggered, and the cycle performance of the metal battery is poor.
Disclosure of Invention
In view of the problems of the background art, an object of the present invention is to provide a metal ion negative electrode additive for constructing a two-layer SEI film, which improves cycle performance of a lithium metal battery.
The invention provides an electrolyte, which comprises a solvent, a diluent, a lithium salt and a metal ion negative electrode additive with a structure shown in formula I:
wherein R is 1 、R 2 Is independently selected from C n F 2n+1 N is an integer not less than 0; r 1 、R 2 May be the same or different; m is a metal ion and q is the valence of M.
Further, M is selected from magnesium ion, aluminum ion, potassium ion, sodium ion, copper ion, calcium ion, manganese ion, cobalt ion, zinc ion, nickel ion, or cesium ion, preferably magnesium ion, zinc ion, calcium ion, or potassium ion.
Further, q is 1 or 2; n is an integer of 1 to 5, and n is preferably 1.
Further, the mass percentage of the metal ion negative electrode additive in the total mass of the electrolyte is 0.01-3%, preferably 0.05-1%.
Further, the metal ion negative electrode additive is selected from one or more of magnesium bis (trifluoromethanesulfonyl) imide, zinc bis (trifluoromethanesulfonyl) imide and potassium bis (trifluoromethanesulfonyl) imide.
Further, the electrolyte also comprises a synergistic additive with a structure shown in a formula II:
wherein R is 3 、R 4 Independently selected from H, C m F 2m+1 M is an integer not less than 0; r 3 、R 4 Not H at the same time.
Further, m is an integer of 0 to 5, preferably 0 or 1.
Further, the mass ratio of the metal ion negative electrode additive to the synergistic additive is 1:2 to 200; preferably 1.
Further, the synergistic additive is selected from one or more of fluoroethylene carbonate and 3, 3-propylene trifluorocarbonate.
Further, the metal ion negative electrode additive is magnesium bis (trifluoromethanesulfonyl) imide, and the synergistic additive is fluoroethylene carbonate.
Further, the lithium salt is selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium dioxalate, lithium difluorooxalate, lithium difluorosulfonimide, lithium bistrifluoromethylsulfonimide, lithium trifluoromethanesulfonate, lithium metaphosphate, lithium bis (nonafluorobutylsulfonyl) imide, lithium hexafluorostannate, lithium ethylenediaminetetraacetic acid dilithium salt, lithium hexafluoroarsenate, lithium dibutylmagnethium, lithium 2, 2-di-n-propylacetate, lithium sulfopyruvate dilithium salt, lithium 1,2, 3-hexafluoropropane-1, 3-disulfonimide, lithium tris (1, 2-dimethoxyethyl) tetraphenylborate, lithium (fluorosulfonyl) (trifluoromethanesulfonyl) imide, lithium bis (pentafluoroethylsulfonyl) imide, preferably, the ratio of the mass of the lithium salt to the total volume of the solvent and the diluent is 0.5M to 4M.
Further, the solvent is an ether solvent, preferably one or more of ethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, triethylene glycol dimethyl ether, diethylene glycol dimethyl ether, o-dimethyl ether, m-dimethyl ether, isosorbide dimethyl ether, pinoresinol dimethyl ether, o-dimethyl ether, ethylene glycol butyl ether, boron trifluoride dimethyl ether, ethylene glycol phenyl ether, ethylene glycol propyl ether, ethylene glycol butyl ether, ethylene glycol monohexyl ether, tri (ethylene glycol) divinyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monolauryl ether, ethylene glycol tertiary butyl ether, triethylene glycol butyl methyl ether, ethylene glycol methyl ether, tetraethylene glycol monolauryl ether, hexaethylene glycol monododecyl ether, ethylene glycol phenyl ether, ethylene glycol monopentyl ether, and isosorbide dimethyl ether; the diluent is a fluorine-containing ether compound, preferably bis (2,2,2-trifluoroethyl) ether, fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether, icosano-15-crown-5-ether, phenyltrifluoromethyl sulfide, 1H, 5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether, pentafluoro-phenyl sulfide, ethyltrifluoromethyl ether, oxyfluorfen, acifluorfen, difluoromethyl 2,2,3,3-pentafluoropropyl ether, allylpentafluorophenyl ether, heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether, difluoromethyl 2,2,3,3-tetrafluoropropyl ether, heptafluoroisopropyl methyl ether, 2-fluorophenylallyl ether, bis- (1,2,2, 2-tetrafluoroethyl) ether, 2-iodotetrafluoroethyl trifluoromethyl ether 1,1,2,2-tetrafluoroethylethyl ether, ethyl 1,1,2,3,3-hexafluoropropyl ether, methyl 2,2,3,3,3-pentafluoropropyl ether, polyperfluoromethylisopropyl ether, 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether, 1-chloro-2,2,2-trifluoroethyl difluoromethyl ether, 3-bromo-4' -fluorodiphenyl ether, 2H-hexafluoropropyl allyl ether, allyl 2,2,2-trifluoroethyl ether, allyl 1,1,2,2-tetrafluoroethyl ether, allyl 2,2,3,3,3-pentafluoropropyl ether, allyl 2,2,3,3-tetrafluoropropyl ether, 2-fluorophenyl 2-nitrophenyl ether, allyl 2,2,3,3,4,4,5,5-octafluoropentyl ether, octyl [2- (trifluoromethyl) phenyl ] ether, allyl 1H, 1H-heptafluorobutyl ether, perfluorobutyl methyl ether, 1,2, 3-pentafluoropropyl-2, 2-trifluoroethyl ether 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether.
Further, the volume ratio of the solvent to the diluent is 1.
The invention also provides a lithium metal battery which comprises the electrolyte, a positive pole piece and a negative pole piece.
The technical scheme of the invention has the following advantages:
1. the electrolyte provided by the invention comprises the metal ion negative electrode additive with the structure shown in the formula I, and a compact-loose double-layer SEI film is formed by the reaction of metal ions on the surface of lithium metal, wherein the compact layer is an alloy layer interface of the metal ions and Li, the interface energy is low, and the adhesion between the SEI film and lithium can be enhanced, so that the interface resistance is reduced. And the loose layer is a lithium-rich layer, so that the mechanical strength caused by the tight layer can be relieved, the softness of an SEI film is enhanced, the conductivity of the electrolyte and the surface of lithium metal is enhanced, and the like, and the cycle performance of the lithium metal battery is improved.
2. According to the additive for the electrolyte, a C-F-C or C-O bond in the synergistic additive can assist the metal ion additive to form a double-layer SEI film in an optimal state on the surface of lithium metal, so that the cycle performance of the lithium metal battery is improved, and particularly, the mass ratio of the metal ion negative electrode additive to the synergistic additive is controlled to be 1: 2-200, wherein the cycle performance is best in a mass ratio of 1.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not indicate specific experimental procedures or conditions, and can be performed according to the procedures or conditions of the conventional experimental procedures described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Examples 1 to 7 and comparative examples 1 to 2 each provide an electrolyte and a lithium ion battery comprising the electrolyte, and the composition of the electrolyte and the concentration or content of each component are shown in table 1. The concentration of the lithium salt refers to the amount concentration of the material (M, i.e., mol/L) equal to the molar amount (mol) of the lithium salt divided by the total volume (L) of the solvent and diluent.
The preparation method of the electrolyte comprises the following steps: dissolving lithium salt in a mixed solvent formed by mixing a solvent and a diluent, wherein the type and concentration of the lithium salt, the type of the solvent and the diluent and the volume ratio of the solvent and the diluent are shown in table 1, then adding a synergistic additive accounting for 0-10wt% of the total mass of the electrolyte and a metal ion negative electrode additive accounting for 0-0.5wt% of the total mass of the electrolyte according to the table 1, and uniformly stirring to obtain the electrolyte.
TABLE 1 composition of electrolyte and concentration or content table of each component
The lithium metal battery is assembled by adopting the electrolyte provided by each group of examples and comparative examples respectively, and the preparation method and the battery performance test method are as follows:
manufacturing a positive plate: liNi prepared from nickel cobalt lithium manganate ternary material 8 Co 1 Mn 1 O 2 And the conductive agent SuperP, the adhesive PVDF and the Carbon Nano Tubes (CNT) are uniformly mixed according to the mass ratio of 97 2 Drying at 85 ℃ and then carrying out cold pressing; then cutting edges, cutting pieces, drying for 8 hours at 85 ℃ under vacuum condition after cutting to prepare the lithium metal battery positive plate; the negative electrode adopts a copper foil with the thickness of 8 mu m purchased from the market and a copper-lithium composite belt with lithium coated on the two sides (the thickness of the lithium is 20 mu m); the lithium metal battery negative plate is prepared by trimming, cutting and slitting; and (3) manufacturing the positive plate, the negative plate and the diaphragm prepared according to the process into the three-positive four-negative lithium metal battery with the capacity of 1400mAh through a lamination process, and respectively injecting the electrolyte into each group to finish the manufacturing of the battery.
Battery cell performance testing
1. Normal temperature formation test: charging at 25 deg.C with 0.1C constant current to 3.7V,0.2C constant current to 4.2V, constant voltage 4.2V to cutoff current 0.05C, then discharging at 0.1C constant current to 2.8V, recording discharge capacity and charge capacity, calculating first effect;
2. and (3) normal-temperature cycle test: charging to 4.2V at 25 deg.C with 0.3C constant current, charging to 0.05C at constant voltage 4.2V to cut-off current, and discharging to 2.8V at 0.5C constant current; the discharge capacity was recorded as C1, and the charge and discharge process was repeated 300 cycles to obtain the N-th cycle discharge capacity CN, with the capacity retention = CN/C1 × 100%, and the obtained results are shown in tables 2 and 3.
TABLE 2 Performance results for high specific energy batteries of lithium metal
TABLE 3 number of cycles to stop the test
Note that: and (3) the capacity retention rate of the soft package lithium metal battery in the cycle test is lower than 80% or the coulombic efficiency is lower than 90%, the battery stops testing, and the number of test turns, the capacity retention rate of the last turn and the coulombic effect are recorded.
The electrolyte added with the metal ion negative electrode additive has obviously prolonged cycle life, and the metal ion negative electrode additive and the synergistic additive are used together to play a synergistic interaction effect, so that the cycle number is greatly increased.
Further, as is clear from comparison between example 1 and examples 6 to 7, the cycle life can be further improved by limiting the mass ratio of the metal ion negative electrode additive to the synergistic additive to a preferable range.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An electrolyte comprising a solvent, a diluent, a lithium salt, and a metal ion negative electrode additive having a structure according to formula I:
wherein R is 1 、R 2 Is independently selected from C n F 2n+1 N is an integer not less than 0; r 1 、R 2 May be the same or different; m is a metal ion and q is the valence of M.
2. The electrolyte according to claim 1, wherein M is selected from one or more of magnesium, aluminum, potassium, sodium, copper, calcium, manganese, cobalt, zinc, nickel or cesium, preferably from one or more of magnesium, zinc, calcium or potassium.
3. The electrolyte of claim 1 or 2, wherein q is 1 or 2; n is an integer of 1 to 5, and n is preferably 1.
4. The electrolyte according to any one of claims 1 to 3, wherein the mass percentage of the metal ion negative electrode additive to the total mass of the electrolyte is 0.01 to 3%, preferably 0.05 to 1%.
5. The electrolyte of any one of claims 1-4, further comprising a synergistic additive having a structure according to formula II:
wherein R is 3 、R 4 Independently selected from H, C m F 2m+1 M is an integer not less than 0; r 3 、R 4 Not H at the same time.
6. The electrolyte of claim 5, wherein m is an integer from 0 to 5, preferably 0 or 1.
7. The electrolyte of claim 5 or 6, wherein the mass ratio of the metal ion negative electrode additive to the synergistic additive is 1:2 to 200; preferably 1.
8. The electrolyte according to any one of claims 1 to 7, wherein the lithium salt is selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium dioxalate borate, lithium difluorooxalate borate, lithium difluorosulfonimide, lithium bistrifluoromethylsulfonimide, lithium trifluoromethanesulfonate, lithium metaphosphate, lithium bis (nonafluorobutylsulfonyl) imide, lithium hexafluorostannate, lithium ethylenediaminetetraacetic acid dilithium salt, lithium hexafluoroarsenate, lithium dibutylmagnesiumlithium, lithium 2, 2-di-n-propylacetate, lithium sulfopyruvate dilithium salt, lithium 1,2, 3-hexafluoropropane-1, 3-disulfonylimide, lithium tris (1, 2-dimethoxyethyl) tetraphenylborate, (fluorosulfonyl) (trifluoromethanesulfonyl) imide, lithium bis (pentafluoroethylsulfonyl) imide, preferably, the ratio of the molar amount of the lithium salt to the total volume of the solvent and the diluent is 0.5M to 4M.
9. The electrolyte according to any one of claims 1 to 8, wherein the solvent is an ether solvent, preferably one or more of ethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, triethylene glycol dimethyl ether, diethylene glycol dimethyl ether, o-dimethyl ether, m-dimethyl ether, isosorbide dimethyl ether, pinoresinol dimethyl ether, o-dimethyl ether, ethylene glycol butyl ether, boron trifluoride dimethyl ether, ethylene glycol phenyl ether, ethylene glycol propyl ether, ethylene glycol butyl ether, ethylene glycol dibutyl ether, ethylene glycol monohexyl ether, tri (ethylene glycol) divinyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monododecyl ether, ethylene glycol t-butyl ether, triethylene glycol butyl methyl ether, ethylene glycol monomethyl ether, tetraethylene glycol monododecyl ether, hexaethylene glycol monododecyl ether, ethylene glycol phenyl ether, ethylene glycol monopentyl ether, isosorbide dimethyl ether;
<xnotran> , (2,2,2- ) , -1,1,1,3,3,3- , -15- -5- , ,1H,1H,5H- -1,1,2,2- , , , , , 2,2,3,3,3- , , 1,2,2,2- , 2,2,3,3- , ,2- , - (1,2,2,2- ) ,2- ,1,1,2,2- , 1,1,2,3,3,3- , 2,2,3,3,3- , ,1,1,2,2- 2,2,3,3- , 1- -2,2,2- ,3- -4' - , 2H- , 2,2,2- , 1,1,2,2- , 2,2,3,3,3- , 2,2,3,3- ,2- 2- , 2,2,3,3,4,4,5,5- </xnotran> 、 Octyl [2- (trifluoromethyl) phenyl group]Ethers, allyl 1H, 1H-heptafluorobutyl ether, perfluorobutyl methyl ether, 1,2, 3-pentafluoropropyl-2, 2-trifluoroethyl ether 1, 2-tetrafluoroethyl-2, 2-trifluoroethyl ether.
10. A battery comprising the electrolyte of any one of claims 1-9, and further comprising a positive electrode tab and a negative electrode tab.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116314595A (en) * | 2023-05-15 | 2023-06-23 | 蔚来电池科技(安徽)有限公司 | Secondary battery and device |
| CN116404255A (en) * | 2023-05-24 | 2023-07-07 | 湖北万润新能源科技股份有限公司 | Electrolyte additive for lithium ion battery and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116314595A (en) * | 2023-05-15 | 2023-06-23 | 蔚来电池科技(安徽)有限公司 | Secondary battery and device |
| CN116314595B (en) * | 2023-05-15 | 2023-08-04 | 蔚来电池科技(安徽)有限公司 | Secondary battery and device |
| CN116404255A (en) * | 2023-05-24 | 2023-07-07 | 湖北万润新能源科技股份有限公司 | Electrolyte additive for lithium ion battery and preparation method and application thereof |
| CN116404255B (en) * | 2023-05-24 | 2023-11-24 | 湖北万润新能源科技股份有限公司 | Electrolyte additive for lithium ion battery and preparation method and application thereof |
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