CN116613295A - 一种钠离子电池铁基复合氧化物负极材料及其制备方法 - Google Patents
一种钠离子电池铁基复合氧化物负极材料及其制备方法 Download PDFInfo
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- CN116613295A CN116613295A CN202310763732.5A CN202310763732A CN116613295A CN 116613295 A CN116613295 A CN 116613295A CN 202310763732 A CN202310763732 A CN 202310763732A CN 116613295 A CN116613295 A CN 116613295A
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- ion battery
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 123
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 61
- 229910001415 sodium ion Inorganic materials 0.000 title claims abstract description 61
- 239000002131 composite material Substances 0.000 title claims abstract description 52
- 239000007773 negative electrode material Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 17
- 229910021260 NaFe Inorganic materials 0.000 claims abstract description 67
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 42
- 239000010405 anode material Substances 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 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 abstract description 9
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 9
- 239000011734 sodium Substances 0.000 claims abstract description 9
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 239000011135 tin Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical group [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 abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 239000011733 molybdenum Substances 0.000 claims abstract description 4
- 229910052718 tin Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims abstract description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 4
- 239000010937 tungsten Substances 0.000 claims abstract description 4
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 25
- 239000000843 powder Substances 0.000 claims description 17
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 13
- 229910021645 metal ion Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000008139 complexing agent Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000012298 atmosphere Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 4
- 229930006000 Sucrose Natural products 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- SZQUEWJRBJDHSM-UHFFFAOYSA-N iron(3+);trinitrate;nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O SZQUEWJRBJDHSM-UHFFFAOYSA-N 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 4
- 239000005720 sucrose Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- IMBKASBLAKCLEM-UHFFFAOYSA-L ferrous ammonium sulfate (anhydrous) Chemical compound [NH4+].[NH4+].[Fe+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O IMBKASBLAKCLEM-UHFFFAOYSA-L 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- NQXWGWZJXJUMQB-UHFFFAOYSA-K iron trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].Cl[Fe+]Cl NQXWGWZJXJUMQB-UHFFFAOYSA-K 0.000 claims description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 2
- PVFSDGKDKFSOTB-UHFFFAOYSA-K iron(3+);triacetate Chemical compound [Fe+3].CC([O-])=O.CC([O-])=O.CC([O-])=O PVFSDGKDKFSOTB-UHFFFAOYSA-K 0.000 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 235000002639 sodium chloride Nutrition 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- 239000004317 sodium nitrate Substances 0.000 claims description 2
- 235000010344 sodium nitrate Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000011572 manganese Substances 0.000 abstract description 44
- 239000011247 coating layer Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007086 side reaction Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 10
- 229910052748 manganese Inorganic materials 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000006872 improvement Effects 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 229940071125 manganese acetate Drugs 0.000 description 3
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 3
- 238000003980 solgel method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229960002303 citric acid monohydrate Drugs 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910021385 hard carbon Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 101000654674 Homo sapiens Semaphorin-6A Proteins 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 102100032795 Semaphorin-6A Human genes 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 229960004106 citric acid Drugs 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000012798 spherical particle Substances 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
-
- 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
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
本发明属于钠离子电池铁基复合氧化物负极材料及其制备技术领域,具体提供一种钠离子电池铁基复合氧化物负极材料及其制备方法。本发明中钠离子电池铁基复合氧化物负极材料的化学表达式为NaFe5‑xMxO8,M表示锰、钒、钛、铬、锡、钨或钼,多价金属元素掺杂增加了铁基复合氧化物负极材料的导电性,提高了储钠性能,使其具有优异的放电比容量和循环稳定性能;并对NaFe5‑xMxO8进行了碳包覆,在NaFe5‑xMnxO8表面生成了碳包覆层,碳包覆层有效抑制了界面副反应,进一步提升负极材料的循环稳定性。此外,本发明中钠离子电池铁基复合氧化物负极材料制备工艺流程简单、制造成本低,易实现规模化的工业生产。
Description
技术领域
本发明属于钠离子电池铁基复合氧化物负极材料及其制备技术领域,具体提供一种多价金属离子掺杂的钠离子电池铁基复合氧化物负极材料及其制备方法。
背景技术
随着人类科学技术的不断进步和社会的快速发展,能源的重要性越来越受到人们的关注;如煤炭、石油、天然气等传统能源存在能源枯竭和环境问题,无法满足人们的需求,因此,建立一个清洁、高效的新能源体系变得越来越紧迫。由于风能、太阳能、潮汐能等不连续不稳定能源不能直接并入电网中的缘故,使得发展高效廉价的储能器件成为新能源体系研究中重要环节。在众多储能器件体系中,锂离子电池因资源、成本及安全问题而受到限制,铅酸电池因环保、寿命及能量密度而受到限制;与二者相比,钠离子电池因资源丰富、分布广泛、储量巨大、成本低廉、能量转换效率高、寿命长和低温性能优异等优点而被认为是大规模储能器件中具有较大潜力的候选者。
目前,钠离子电池已经逐步进入从研究走向商业化的阶段,这一过程中,优良的负极材料对钠离子电池的性能起着至关重要的作用。现阶段钠离子电池负极材料主要是硬碳材料,然而,硬碳材料不仅制备非常困难,而且比容量偏低(仅达到200~300mAh/g),循环性能也不够理想。与之相比,许多复合氧化物因具有较高的比容量,被认为是潜在的钠离子电池负极材料,其中,钠离子电池所应用的大部分无机化合物均含有有毒金属,这些有毒金属不仅在地壳中的相对丰度不高,而且对环境有污染和对人体有害。基于此,本发明提供一种多价金属离子掺杂的钠离子电池铁基复合氧化物负极材料及其制备方法。
发明内容
本发明的目的在于针对背景技术中现有钠离子电池负极材料存在的诸多问题,提供一种钠离子电池铁基复合氧化物负极材料及其制备方法;所述钠离子电池铁基复合氧化物负极材料的化学表达式为NaFe5-xMxO8,M表示锰、钒、钛、铬、锡、钨或钼,多价金属元素掺杂增加了铁基复合氧化物负极材料的导电性,提高了储钠性能,使得本发明的钠离子电池铁基复合氧化物负极材料具有优异的放电比容量和循环稳定性能;并对NaFe5-xMxO8进行了碳包覆,在NaFe5-xMnxO8表面生成了碳包覆层,碳包覆层有效抑制了界面副反应,使得本发明的碳包覆钠离子电池铁基复合氧化物负极材料具有优异的循环稳定性。此外,该负极材料制备工艺流程简单、制造成本低,易实现规模化的工业生产。
为了实现上述目的,本发明采用的技术方案是:
一种钠离子电池铁基复合氧化物负极材料,其特征在于,该铁基复合氧化物负极材料的化学表达式为:
NaFe5-xMxO8,
其中,M表示多价金属离子,具体为锰、钒、钛、铬、锡、钨或钼;铁与多价金属离子的原子比为:Fe:M=4:1~4.995:0.005。
进一步的,所述钠离子电池铁基复合氧化物负极材料的制备方法,其特征在于,包括以下步骤:
将钠源、铁源、多价金属离子源、络合剂、溶剂混合,得到混合溶液;其中,按照摩尔比:Na:Fe:M=1:(5-x):x,(Na+Fe+M):络合剂=1:(1~5);溶剂与其他原料总质量(钠源、铁源、多价金属离子源、络合剂)的质量比为(1~10):1;
将混合溶液通过水浴蒸发得到凝胶物料,再烘干得到干凝胶,并将干凝胶研磨至粉末状,形成粉末物料;其中,水浴蒸发的温度为60~90℃、时间为3~6h,烘干的温度为60~120℃、时间为12~24h;
将粉末物料放入管式炉中进行烧结,烧结的升温速率为1~5℃/min、温度为100~800℃、时间为4~20h,烧结气氛为空气或氧气;冷却至室温后进行再次研磨,得到钠离子电池铁基复合氧化物负极材料。
进一步的,钠源原料为氢氧化钠、硝酸钠、碳酸钠、醋酸钠、氯化钠中的至少一种,铁源原料为九水硝酸铁、六水合三氯化铁、硫酸铁、硫酸亚铁、硫酸亚铁铵、乙酸铁、氧化铁中的至少一种,多价金属离子源原料为M的乙酸盐、硝酸盐、硫酸盐、碳酸盐、氧化物中的至少一种,溶剂为去离子水和其他水溶剂中的至少一种。
进一步的,所述铁基复合氧化物负极材料经过碳包覆改性,表示为:NaFe5-xMxO8@C,碳的包覆量为NaFe5-xMxO8的0.5~5.0wt%。
更进一步的,所述碳包覆改性的过程为:
将碳源置于研钵中研磨至粉末状,再加入NaFe5-xMxO8母体材料与乙酸乙酯进行研磨,混合均匀后干燥,得到混合物固体粉末;
将混合物固体粉末在管式炉中进行烧结,烧结的升温速率为1~5℃/min、温度为200~600℃、时间为4~10h,烧结气氛为氩气或氮气;冷却至室温后进行再次研磨。
再进一步的,碳源为蔗糖、葡萄糖、碳纳米管、石墨烯、淀粉中的至少一种。
再进一步的,乙酸乙酯的用量为NaFe5-xMxO8质量的1~5倍。
本发明的工作原理在于:
本发明通过溶胶凝胶的方法制备NaFe5-xMxO8,其中,钠源、铁源、多价金属离子掺杂源提供所需金属正离子,柠檬酸作为络合剂,发生络合反应生成溶胶和凝胶,凝胶通过进一步处理得到了掺杂M的NaFe5-xMxO8复合负极材料。
基于上述技术方案与工作原理,本发明的有益效果在于:
1.本发明溶胶凝胶法制备该掺杂型铁基复合氧化物负极材料,利用络合反应生成溶胶和凝胶,进一步处理凝胶制备铁基复合氧化负极材料NaFe5-xMxO8;溶胶凝胶法可使掺杂元素在体相进行分子级混合和分布,能够降低材料的颗粒尺寸至纳米级,增大比表面积,增强其导电性;再以碳源对NaFe5-xMxO8进行碳包覆,降低了体积效应,进一步改善了负极材料的倍率和循环等电化学性能;所述方法操作工艺简单,制造成本低廉,在制备过程中无有毒有害物质生产,符合绿色环保概念,易实现规模化的工业生产。
2.本发明通过掺杂了多价金属元素离子,稳定了材料结构,增加了负极材料的离子导电性,提高了储钠性能,使得本发明钠离子电池铁基复合氧化物负极材料NaFe5-xMxO8具有更优异的放电比容量;并对NaFe5-xMxO8进行碳包覆,由于在NaFe5-xMxO8表面生成了碳包覆层,增加了电子导电性,并有效抑制了界面副反应,提高了表面稳定性,抑制了材料结构的崩塌,使得本发明碳包覆钠离子电池铁基复合氧化物负极材料NaFe5-xMxO8@C具有优良的循环稳定性能。
3.本发明提供的钠离子电池铁基复合氧化物负极材料NaFe5-xMxO8具有较高的放电比容量:在室温25℃±1℃条件下,充放电的截止电压为0-3V时,该材料在0.1C倍率充放电条件下首次放电比容量达到221mAh/g;循环100次后,其放电比容量48.01mAh/g。同时,本发明提供的碳包覆铁基钠离子电池复合氧化物负极材料NaFe5-xMxO8@C的容量衰减情况得到有效改善,NaFe5-xMxO8@C负极材料在室温25℃±1℃条件下,充放电的截止电压为0-3V时,该材料在0.1C倍率充放电条件下首次放电比容量达到590mAh/g;循环100次后,其放电比容量为105.4mAh/g,容量保持率为17.86%。
附图说明
图1为实施例1中钠离子电池负极材料NaFe4.5Mn0.5O8的制备工艺流程图。
图2为实施例1中钠离子电池负极材料NaFe4.5Mn0.5O8和对比例NaFe5O8的XRD图。
图3为实施例1中对比例NaFe5O8的SEM图。
图4为实施例1中钠离子电池负极材料NaFe4.5Mn0.5O8的SEM图。
图5为实施例1中钠离子电池负极材料NaFe4.5Mn0.5O8和对比例NaFe5O8在0.1C倍率下的循环性能曲线图。
图6为本发明实施例1提供的钠离子电池负极材料NaFe4.5Mn0.5O8和对比例NaFe5O8在0.1C倍率下的首圈放电曲线图。
图7为本发明实施例1提供的钠离子电池负极材料NaFe4.5Mn0.5O8和对比例NaFe5O8在0.1C倍率下的第50圈充放电曲线图。
图8为本发明实施例1提供的钠离子电池负极材料NaFe4.5Mn0.5O8和对比例NaFe5O8在0.1C倍率下的第100圈充放电曲线图。
图9为实施例4中碳包覆钠离子电池负极材料NaFe4.5Mn0.5O8@C的制备工艺流程图。
具体实施方式
为使本发明的目的、技术方案与技术效果更加清楚完整,下面结合附图与实施例对本发明进行进一步详细说明。
实施例1
本实施例提供一种锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8的制备方法,所需原材料为氯化钠、九水硝酸铁和乙酸锰,一水柠檬酸作为络合剂,去离子水作为溶剂介质。
上述锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8的制备流程如图1所示,具体为:
首先,将80ml去离子水和12.6g一水柠檬酸加入烧杯中,将烧杯放在恒温加热磁力搅拌器上,温度保持在室温,搅拌至完全溶解;之后依次加入0.58g氯化钠、12.15g九水硝酸铁、1.225g乙酸锰,在原材料完全溶解之后,继续搅拌30min,得到混合溶液;
然后,向上述混合溶液中滴加氨水,调节pH至6~6.5;再以80℃恒温条件下搅拌6h,得到凝胶状固体;将得到的凝胶物放入80℃电热鼓风干燥箱中保温12h,得到红褐色固体,转移到研钵,研磨成细腻均匀的粉体;
最后,将上述粉体放入马弗炉中,在空气气氛下,以5℃/min的速度升温至300℃恒温烧结6h,再自然降温冷却到室温,取出材料并研磨成细粉,即得到锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8。
将NaFe5O8作为对比例,其制备过程与本实施例的唯一区别是原料中不加入锰源(乙酸锰);将本实施例中锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8与对比例NaFe5O8进行对比测试,结果如下:
XRD图如图2所示,由图可见,未掺杂Mn的NaFe5O8具有标准的尖晶石结构,其衍射峰于标准谱图的衍射峰完全一致,完全重合,表明我们得到的为掺杂样品确实属于NaFe5O8物相,其晶体结构为典型的NaFe5O8;而掺杂Mn的NaFe4.5Mn0.5O8样品的结晶度明显减小,其晶粒尺寸也得到了抑制,而且其衍射峰发生了明显的位移,最强主峰向小角度移动,表明锰掺杂后使样品晶体的晶胞变大了,这归因于Mn离子的离子半径大于铁离子的离子半径。
SEM图分别如图3、图4所示,由图可见,未掺杂Mn的NaFe5O8为立方尖晶石颗粒的团聚体,并伴随优极少量的棒状或管状分布,且分布并不均匀;而掺杂Mn的NaFe4.5Mn0.5O8样品的分布较为均匀,且表面为球形颗粒的团聚体,并伴随有极少量片状结构,这归因于掺杂Mn的性质与Fe的性质差异。
恒电流充放电测试结果如图5~图8所示,由图可见,本实施例中的负极材料相对于对比例的负极材料具有较高的放电比容量和优异的循环稳定性,在室温为25±1℃时,充放电截止电压为0~3V时,对比例在0.1C充放电倍率下首次放电比容量为221mAh/g,循环100圈后放电比容量仅有48mAh/g左右;本实施例在0.1C充放电倍率下首次放电比容量达到590mAh/g,循环100圈后放电比容量仍有105.4mAh/g;显而易见,本实施例中锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8的电化学性能优于对比例。
实施例2
本实施例提供一种锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.75Mn0.25O8的制备方法,其与实施例1的唯一区别在于:负极材料中锰元素和铁原子比例为Fe:Mn=4.75:0.25。经过测试,其掺杂后的NaFe4.75Mn0.25O8负极材料的电化学性能仍有类似改善效果。
实施例3
本实施例提供一种锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8的制备方法,其与实施例1的唯一区别在于:采用50%的硝酸锰溶液作为锰源原材料。经过测试,其掺杂后的NaFe4.5Mn0.5O8负极材料的电化学性能仍有类似改善效果。
实施例4
本实施例提供一种碳包覆的钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8的制备方法;其中,采用实施例3制备的钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8作为母体材料,以蔗糖作为碳包覆的原材料,碳包覆量为母体材料质量的2wt%。其碳包覆流程如图9所示,具体为:
将0.0594g蔗糖放入研钵中,研磨成粉末,加入0.2375gNaFe4.5Mn0.5O8负极材料,加入1ml乙酸乙酯,充分研磨30min,使其充分混合,干燥得到混合物;将混合物放入管式炉中,在氩气气氛下(氩气流速200ml/min),以2℃/min的速度升温至400℃恒温烧结6h,再自然降温冷却至室温,取出材料并研磨成细粉,即得到碳包覆钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8@C。
将未碳包覆的负极材料NaFe4.5Mn0.5O8作为对比例,对本实施例提供的碳包覆锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8@C进行对比测试。对本实施例和对比例2中的负极材料进行了恒电流充放电测试,对于未碳包覆的NaFe4.5Mn0.5O8负极材料,在室温为25±1℃时,充放电截止电压为0~3V时,本实施例中碳包覆锰掺杂钠离子电池铁基复合氧化物负极材料NaFe4.5Mn0.5O8@C在0.1C充放电倍率下循环40圈后放电比容量仍有220mAh/g左右,其比容量比对比例高出了60mAh/g左右,由此可见,碳包覆能够进一步改善NaFe4.5Mn0.5O8负极材料的倍率和循环性能。
实施例5
本实施例提供一种碳包覆的钠离子电池铁基复合氧化物负极材料NaFe4.5V0.5O8的制备方法,表示为NaFe4.5V0.5O8@C,碳包覆量为母体材料质量的2wt%。经过测试,该负极材料的电化学性能仍有类似的改善效果。
实施例6
本实施例提供一种碳包覆的钠离子电池铁基复合氧化物负极材料NaFe4.5Cr0.5O8的制备方法,表示为NaFe4.5Cr0.5O8@C,碳包覆量为母体材料质量的2wt%。经过测试,该负极材料的电化学性能仍有类似的改善效果。
实施例7
本实施例提供一种碳包覆的钠离子电池铁基复合氧化物负极材料NaFe4.5Sn0.5O8的制备方法,表示为NaFe4.5Sn0.5O8@C,碳包覆量为母体材料质量的2wt%。经过测试,该负极材料的电化学性能仍有类似的改善效果。
实施例8
本实施例提供一种碳包覆的钠离子电池铁基复合氧化物负极材料NaFe4.75Mo0.25O8的制备方法,表示为NaFe4.75Mo0.75O8@C,碳包覆量为母体材料质量的2wt%。经过测试,该负极材料的电化学性能仍有类似的改善效果。
以上所述,仅为本发明的具体实施方式,本说明书中所公开的任一特征,除非特别叙述,均可被其他等效或具有类似目的的替代特征加以替换;所公开的所有特征、或所有方法或过程中的步骤,除了互相排斥的特征和/或步骤以外,均可以任何方式组合。
Claims (7)
1.一种钠离子电池铁基复合氧化物负极材料,其特征在于,该铁基复合氧化物负极材料的化学表达式为:NaFe5-xMxO8,其中,M表示多价金属离子,具体为锰、钒、钛、铬、锡、钨或钼;铁与多价金属离子的原子比为:Fe:M=4:1~4.995:0.005。
2.按权利要求1所述钠离子电池铁基复合氧化物负极材料的制备方法,其特征在于,包括以下步骤:
将钠源、铁源、多价金属离子源、络合剂、溶剂混合,得到混合溶液;其中,按照摩尔比:Na:Fe:M=1:(5-x):x,(Na+Fe+M):络合剂=1:(1~5);溶剂与其他原料总质量的质量比为(1~10):1;
将混合溶液通过水浴蒸发得到凝胶物料,再烘干得到干凝胶,并将干凝胶研磨至粉末状,形成粉末物料;其中,水浴蒸发的温度为60~90℃、时间为3~6h,烘干的温度为60~120℃、时间为12~24h;
将粉末物料放入管式炉中进行烧结,烧结的升温速率为1~5℃/min、温度为100~800℃、时间为4~20h,烧结气氛为空气或氧气;冷却至室温后进行再次研磨,得到钠离子电池铁基复合氧化物负极材料。
3.按权利要求2所述钠离子电池铁基复合氧化物负极材料的制备方法,其特征在于,钠源原料为氢氧化钠、硝酸钠、碳酸钠、醋酸钠、氯化钠中的至少一种,铁源原料为九水硝酸铁、六水合三氯化铁、硫酸铁、硫酸亚铁、硫酸亚铁铵、乙酸铁、氧化铁中的至少一种,多价金属离子源原料为M的乙酸盐、硝酸盐、硫酸盐、碳酸盐、氧化物中的至少一种,溶剂为去离子水和其他水溶剂中的至少一种。
4.按权利要求1所述钠离子电池铁基复合氧化物负极材料,其特征在于,所述铁基复合氧化物负极材料经过碳包覆改性,表示为:NaFe5-xMxO8@C,碳的包覆量为NaFe5-xMxO8质量的0.5~5.0wt%。
5.按权利要求4所述钠离子电池铁基复合氧化物负极材料,其特征在于,所述碳包覆改性的过程为:
将碳源置于研钵中研磨至粉末状,再加入NaFe5-xMxO8母体材料与乙酸乙酯进行研磨,混合均匀后干燥,得到混合物固体粉末;
将混合物固体粉末在管式炉中进行烧结,烧结的升温速率为1~5℃/min、温度为200~600℃、时间为4~10h,烧结气氛为氩气或氮气;冷却至室温后进行再次研磨。
6.按权利要求5所述钠离子电池铁基复合氧化物负极材料,其特征在于,碳源为蔗糖、葡萄糖、碳纳米管、石墨烯、淀粉中的至少一种。
7.按权利要求5所述钠离子电池铁基复合氧化物负极材料,其特征在于,乙酸乙酯的用量为NaFe5-xMxO8质量的1~5倍。
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