CN113314702A - Carbon-silicon coated tin dioxide composite, preparation method thereof and application of carbon-silicon coated tin dioxide composite as lithium ion battery cathode material - Google Patents
Carbon-silicon coated tin dioxide composite, preparation method thereof and application of carbon-silicon coated tin dioxide composite as lithium ion battery cathode material Download PDFInfo
- Publication number
- CN113314702A CN113314702A CN202110586809.7A CN202110586809A CN113314702A CN 113314702 A CN113314702 A CN 113314702A CN 202110586809 A CN202110586809 A CN 202110586809A CN 113314702 A CN113314702 A CN 113314702A
- Authority
- CN
- China
- Prior art keywords
- tin dioxide
- carbon
- silicon
- coated tin
- dioxide composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 title claims abstract description 111
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 32
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000010406 cathode material Substances 0.000 title description 12
- -1 stannic oxide compound Chemical class 0.000 claims abstract description 31
- 238000000498 ball milling Methods 0.000 claims abstract description 25
- 239000002105 nanoparticle Substances 0.000 claims abstract description 20
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 20
- 239000007773 negative electrode material Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007873 sieving Methods 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 239000002608 ionic liquid Substances 0.000 claims description 17
- 239000002028 Biomass Substances 0.000 claims description 15
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 7
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 229920005610 lignin Polymers 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000003763 carbonization Methods 0.000 claims description 4
- 241000609240 Ambelania acida Species 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 240000008042 Zea mays Species 0.000 claims description 3
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 3
- 239000010905 bagasse Substances 0.000 claims description 3
- 235000005822 corn Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000010902 straw Substances 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- 150000001450 anions Chemical class 0.000 claims description 2
- 238000010000 carbonizing Methods 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Substances C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 230000002441 reversible effect Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 239000003575 carbonaceous material Substances 0.000 description 6
- 235000010980 cellulose Nutrition 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- ZRGWIXMPMASFPS-UHFFFAOYSA-N 1-butyl-3-methyl-1,2-dihydroimidazol-1-ium;dihydrogen phosphate Chemical compound OP(O)([O-])=O.CCCC[NH+]1CN(C)C=C1 ZRGWIXMPMASFPS-UHFFFAOYSA-N 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 2
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000001453 impedance spectrum Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CQNKALUGMKTOBV-UHFFFAOYSA-N (1-butyl-3-methyl-2H-imidazol-2-yl) acetate Chemical compound CCCCN1C=CN(C)C1OC(C)=O CQNKALUGMKTOBV-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 125000003535 D-glucopyranosyl group Chemical group [H]OC([H])([H])[C@@]1([H])OC([H])(*)[C@]([H])(O[H])[C@@]([H])(O[H])[C@]1([H])O[H] 0.000 description 1
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 1
- 229920000168 Microcrystalline cellulose Polymers 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- PYMYPHUHKUWMLA-WDCZJNDASA-N arabinose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WDCZJNDASA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 229930182830 galactose Natural products 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000006138 lithiation reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 235000019813 microcrystalline cellulose Nutrition 0.000 description 1
- 239000008108 microcrystalline cellulose Substances 0.000 description 1
- 229940016286 microcrystalline cellulose Drugs 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- ODLMAHJVESYWTB-UHFFFAOYSA-N propylbenzene Chemical group CCCC1=CC=CC=C1 ODLMAHJVESYWTB-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000010907 stover Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
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
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/205—Preparation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G19/00—Compounds of tin
- C01G19/02—Oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
-
- 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
-
- 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
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a carbon-silicon coated stannic oxide compound, a preparation method thereof and application of the compound as a lithium ion battery cathode materialBiochar; mixing silica powder and SnO2Mixing the nano particles and then carrying out ball milling to obtain silicon oxide compound coated tin dioxide nano particles; adding the biochar into the tin dioxide nano particles coated by the silicon oxide compound, and continuously performing ball milling to obtain a biochar silicon-coated tin dioxide compound; and finally, sieving the biological carbon-silicon coated tin dioxide compound to obtain the biological carbon-silicon coated tin dioxide composite. The required carbon-silicon coated tin dioxide composite negative electrode material is prepared simply and conveniently by a ball milling method, and has the advantages of higher reversible specific capacity, good conductivity and good cycle performance.
Description
Technical Field
The invention relates to a carbon-silicon coated tin dioxide compound, a preparation method thereof and application of the compound as a lithium ion battery cathode material, and belongs to the technical field of lithium ion batteries.
Background
Lithium Ion Batteries (LIBs) are widely used in electronic devices and Electric Vehicles (EVs), and with the rapid development of electronic devices and Electric Vehicles (EVs), there is an urgent need to find a negative electrode material with high capacity, long cycle life and good conductivity to replace a commercial graphite negative electrode (the specific capacity of which is limited and is only 372mAh g)-1Poor rate performance). In recent years, efforts have been made to construct a negative electrode of a lithium ion battery having a composite structure using a high specific capacity material such as a metal oxide. SnO2As a high theoretical capacity (about 1493mAh g-1) The potential negative electrode material with low cost and environmental friendliness has attracted wide attention in the aspects of lithium storage mechanism and practical application. Although SnO2Has a rather high specific capacity, but its large volume change (about 300%) and the aggregation of tin particles in the lithiation/delithiation reaction lead to a drastic drop in capacity. In addition, poor reversibility and electrical conductivity also hinder their application in lithium ion negative electrode materials. By constructing the nano structure and combining the nano structure with the composite structure, the volume expansion and the diffusion-induced strain of the electrode in the charging and discharging processes can be effectively buffered, so that the electrochemical performance of the electrode is improved. In some composites, SnO2The particles are directly exposed to the electrolyte, resulting in undesirable side reactions and SnO2The interface with the electrolyte is unstable. Therefore, it is necessary to design finer structures or introduce other elements to further improve SnO2Energy storage performance of the carbon material composite structure. To our knowledge, the highest theoretical capacity Si (4200mAh g-1) Have been extensively studied. However, with SnO2Similarly, the use of silicon particles in LIBs is greatly limited due to their volume change (about 400%). Some reports indicate that Si and SnO2The multiple effects of (a) are beneficial for the storage properties of lithium. Preparation by ball millingSilicon oxy compound (SiO)x)@SnO2The composite is favorable for improving the conductivity of the cathode material, and simultaneously, the nano SnO2The surface is coated with a layer of silicon-oxygen compound, so that the aggregation of tin particles is effectively inhibited, and a remarkable synergistic effect is shown in the aspect of reversible lithium storage. Finally, the composite material is compounded with a carbon material through ball milling, and the multilayer coating structure not only has good electrochemical performance, but also can prevent tin from gathering. Different from hydrothermal preparation, the carbon-silicon coated tin dioxide composite (C/SiO) is prepared by adopting a ball milling methodx@SnO2) The composite material is not only simple and convenient, but also is beneficial to buffering the volume change of the electrode by reducing tin dioxide with silicon to generate 'holes'.
Biomass materials are renewable and abundant in stock, including wood flour, straw, corn stover, rice hulls, bagasse, cellulose, lignin, cotton. The main components of the biomass are three natural polymers of cellulose, hemicellulose and lignin. Wherein the cellulose accounts for 50-65% (w/w), is a linear high polymer formed by connecting D-glucopyranosyl through beta-1/4 glycosidic bonds, each glucose unit contains 3 free hydroxyl groups, and the cellulose forms intermolecular hydrogen bonds through the hydroxyl groups, so that the crystallinity is high; the hemicellulose is high-polymer saccharides accounting for 20-30% (w/w), and mainly comprises five-carbon sugars such as xylose, arabinose, mannose, galactose and the like; the lignin accounts for 15-30% (w/w), is formed by connecting three phenylpropane units through a C-C bond and a C-O-C bond, has a high polymer with a three-dimensional net structure, and is connected with hemicellulose through an LCC bond. The biomass material is rich in a large amount of carbon elements, is very suitable for preparing the porous carbon material as a fiber material, is environment-friendly and changes waste into valuable.
Disclosure of Invention
The purpose of the invention is as follows: the technical problem to be solved by the invention is to aim at SnO2The defect of the cathode material on lithium storage provides an environment-friendly method for preparing the carbon-silicon coated tin dioxide compound (C/SiO)x@SnO2) And (3) a negative electrode material.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a carbon-silicon coated tin dioxide composite comprises the following steps:
(1) mixing the ground biomass with ionic liquid, and carbonizing to obtain biochar;
(2) mixing silica powder and SnO2Mixing the nano particles and then carrying out ball milling to obtain silicon oxide compound coated tin dioxide nano particles;
(3) adding the biochar obtained in the step (1) into the silicon oxide compound coated tin dioxide nano-particles obtained in the step (2), and continuing ball milling to obtain a biochar silicon coated tin dioxide compound;
(4) and (4) sieving the biological carbon silicon coated stannic oxide compound obtained in the step (3).
Specifically, in the step (1), the biomass is selected from any one or a combination of more than two of waste wood chips, straws, corn stalks, rice hulls, bagasse, cellulose, lignin and cotton;
in the ionic liquid, the cation is selected from any one of alkyl imidazole, alkyl pyridine or dialkyl imidazole quaternary ammonium salt, and the anion is selected from any one of dihydrogen phosphate, ferric tetrachloride ion or acetate.
The ionic liquid can dissolve most inorganic substances, organic substances and high molecular materials; it can be used not only as a solvent, but also even as a catalyst for certain reactions. The ionic liquid is difficult to volatilize, so that toxic and harmful gases cannot be generated in the reaction process. In a word, the ionic liquid has the advantages of no odor, no pollution, nonflammability, easy separation from products, easy recovery, repeated and repeated recycling and the like, so that the ionic liquid becomes an ideal substitute of the traditional volatile organic solvent. The method effectively avoids the problem of serious environmental pollution caused by using an organic solvent, and becomes an environment-friendly green solvent. The ionic liquid is adopted to dissolve the biomass material, and the biomass material is further carbonized to obtain the high-graphite-degree heteroatom-doped biological carbon. The composite negative electrode material is used for coating metal oxide, improves the conductivity of the material, is prepared into a composite negative electrode material with excellent battery performance, and plays an important role in the utilization of biomass and the development of lithium ion battery technology.
Specifically, in the step (1), the biomass and the ionic liquid are stirred and mixed according to a mass ratio of 1: 2-5, preferably 1: 3, the stirring speed is 400-500 r/min, and the stirring time is 6-10 h.
Specifically, in the step (1), the carbonization is carried out under the protection of nitrogen, the temperature is raised to 1000-1600 ℃ at the temperature raising rate of 1-5 ℃/min, the temperature is kept for 2-6 h, and then the carbonization is cooled to room temperature at the temperature lowering rate of 5-10 ℃/min, preferably at the temperature raising rate of 3 ℃/min, and at the cooling rate of 5 ℃/min.
Specifically, in the step (2), silicon powder and SnO2Mixing the nano particles according to a molar ratio of (1-3): 1, preferably 1:1, and then ball-milling for 6-12 h at a rotation speed of 500-600 rpm, preferably 500 rpm, for 12 h.
Specifically, in the step (3), biochar (calculated by 100% of carbon atoms) and silicon oxide compound coated tin dioxide nanoparticles are mixed according to a molar ratio of (1-3): 1 mixing, preferably 2:1, and then ball-milling for 6-12 h at the rotating speed of 500-600 r/min.
Specifically, in the step (4), the particle size of the sieved powder of the biological carbon-silicon coated tin dioxide composite is smaller than 100 meshes.
Further, the carbon-silicon coated tin dioxide composite prepared by the preparation method is also in the protection scope of the invention.
Further, the invention also claims the application of the prepared carbon-silicon coated tin dioxide composite as a lithium ion battery cathode material.
Furthermore, the invention also provides a lithium ion battery, and the cathode of the lithium ion battery is made of the carbon-silicon coated tin dioxide compound.
Has the advantages that:
1. the lithium ion battery cathode material provided by the invention takes waste biomass, silicon and metal oxide as raw materials, has wide sources and is easy to obtain, dissolves the biomass by using ionic liquid, and collapses the structure of the biomass, so that carbon atoms are rearranged in the sintering process, and the biological carbon with high graphite degree and doped with heteroatoms is obtained, and is environment-friendly without generating toxic gas.
2. The inventionThe required carbon-silicon coated tin dioxide compound (C/SiO) is simply and conveniently prepared by a ball milling methodx@SnO2) The cathode material does not need other chemical synthesis methods, and the preparation temperature of the biochar is lower than the carbonization temperature of common hard carbon, so that the energy is saved to a great extent.
3. The product of the invention is used as a lithium battery cathode material, and has the advantages of higher reversible specific capacity, good conductivity and good cycle performance.
Drawings
The foregoing and/or other advantages of the invention will become further apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
FIG. 1 is a scanning electron microscope (2 μm) of the negative electrode material of the lithium ion battery prepared in example 1.
FIG. 2 is a transmission electron microscope diffraction pattern (10nm) of the lithium ion battery negative electrode material prepared in example 1.
FIG. 3 shows the negative electrode material of lithium ion battery prepared in example 1 and (SiO)x)@SnO2And SnO2X-ray diffraction (XRD) pattern of (a).
FIG. 4 is a graph of 100 charge and discharge cycles of the lithium ion battery prepared in example 1 at a current density of 0.1A/g.
FIG. 5 shows SiO, a negative electrode material for a lithium ion battery, prepared in example 1x@SnO2And SnO2Impedance spectrum under 100000-0.01 Hz after 20 times of charge and discharge.
Detailed Description
The invention will be better understood from the following examples.
The structures, proportions, and dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the skilled in the art. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
Example 1
Placing 2g of ball-milled waste wood chips and 10g of ionic liquid (1-butyl-3-methylimidazole dihydrogen phosphate) into a three-neck flask, stirring for 6h at 400r/min, placing the mixture into a boat, sintering in a tubular high-temperature furnace, heating at the temperature rising rate of 3 ℃/min to 1200 ℃ from 50 ℃, keeping the temperature for 4h at constant temperature, then cooling to room temperature at the temperature of 5 ℃/min, taking out a sample, grinding the sample into powder, and sieving to obtain the required biochar material. Mixing Si and SnO2Ball-milling the nano particles for 10 hours at the rotating speed of 800r/min according to the molar ratio of 1:1, and adding biological carbon (calculated by 100 percent of carbon element, the biological carbon: Si: SnO)2And (2: 1: 1) (molar ratio)), the rotating speed is unchanged, the ball milling is continued for 10 hours, and then the negative electrode material of the lithium ion battery is obtained after sieving.
Example 2
Placing 2g of microcrystalline cellulose and 6g of ionic liquid (1-butyl-3-methylimidazolyl acetate) into a three-neck flask, stirring for 6h at 400r/min, placing the mixture into a boat, sintering in a tubular high-temperature furnace, heating to 1200 ℃ from 50 ℃ at the heating rate of 3 ℃/min, keeping the temperature for 4h at constant temperature, then cooling to room temperature at 10 ℃/min, taking out a sample, and grinding into powder to obtain the required biological carbon material. Mixing Si and SnO2Ball-milling the nano particles for 10 hours at the rotating speed of 600r/min according to the molar ratio of 1:1, and adding biological carbon (calculated by 100 percent of carbon element, the biological carbon: Si: SnO)2And (2: 1: 1) (molar ratio)), the rotating speed is unchanged, the ball milling is continued for 10 hours, and then the negative electrode material of the lithium ion battery is obtained after sieving.
Example 3
Taking 2g of waste wood chips and 6g of ionic liquid (1-butyl-3-methylimidazole dihydrogen phosphate) and placing the waste wood chips and 6g of ionic liquid into a three-neck flask, stirring the mixture for 10 hours at 400r/min, placing the mixture into a boat, sintering the mixture in a tubular high-temperature furnace at the temperature rising rate of 3 ℃/min, heating the mixture from 50 ℃ to 1600 ℃, and keeping the temperature constantKeeping the temperature for 4h, then cooling to room temperature at the speed of 10 ℃/min, taking out a sample, and grinding the sample into powder to obtain the required biological carbon material. Mixing Si and SnO2Ball-milling the nano particles for 10 hours at the rotating speed of 800r/min according to the molar ratio of 1:1, and adding biological carbon (calculated by 100 percent of carbon element, the biological carbon: Si: SnO)2And (2: 1: 1) (molar ratio)), the rotating speed is unchanged, the ball milling is continued for 10 hours, and then the negative electrode material of the lithium ion battery is obtained after sieving.
Example 4
Placing 2g of waste wood chips and 6g of ionic liquid (1-butyl-3-methylimidazole dihydrogen phosphate) into a three-neck flask, stirring for 8h at 400r/min, placing the mixture into a boat, sintering in a tubular high-temperature furnace, heating at the temperature rising rate of 3 ℃/min to 1200 ℃ from 50 ℃, keeping the temperature for 4h at constant temperature, then cooling to room temperature at the temperature of 10 ℃/min, taking out a sample, and grinding into powder to obtain the required biological carbon material. Mixing Si and SnO2Ball-milling the nano particles for 10 hours at the rotating speed of 1200r/min according to the molar ratio of 1:1, and adding biological carbon (calculated by 100 percent of carbon element, the biological carbon: Si: SnO)2And (2: 2: 1) (molar ratio)), the rotating speed is unchanged, the ball milling is continued for 10 hours, and then the negative electrode material of the lithium ion battery is obtained after sieving.
Example 5
Mixing the lithium ion battery negative electrode material prepared in the embodiment 1-4 with acetylene black and polyvinylidene fluoride as conductive agents respectively in a mass ratio of 8:1:1, preparing the mixture into slurry by using N-methyl pyrrolidone, coating the slurry on a copper foil, placing the prepared slurry coating in a vacuum drying box, and drying for 24 hours at 90 ℃. And extruding a circular pole piece with the diameter of 12mm by using a tablet press to obtain the cathode of the battery for the experiment, taking a lithium piece as a counter electrode, a porous polypropylene diaphragm as a diaphragm, an organic solution of lithium hexafluorophosphate as an electrolyte, adding a spring plate and a gasket, and assembling into a button battery with the LIR2032 model in a glove box.
FIG. 1 is a scanning electron microscope electron micrograph of the lithium ion battery cathode material prepared in example 1, and it can be found that SnO2The smooth and regular crystal form of the nano particles disappears, the nano particles are completely coated by the biological carbon, and the surface is rough and porous. It can be clearly seen from the transmission electron microscope of FIG. 2 that SnO coated with carbon and silicon2Structure, the innermost part of which is SnO2The crystalline form, followed by the reduced Sn, is coated with amorphous silicon compound/biochar at the outermost layer, about 7nm thick. The biochar/SiOxCoated SnO2The structure improves the electron transfer rate and inhibits the internal SnO2Thus, the material not only has satisfactory reversible specific capacity but also has excellent conductivity and cycle performance when being used as a negative electrode material of a lithium ion battery, which indicates that the biochar/SiOxCoating pair SnO2The improvement effect of conductivity and cycle performance is remarkable. The X-ray diffraction pattern (XRD) in FIG. 3 clearly shows that silicon reduces SnO during the first ball milling step2Nanoparticles, elemental Sn is generated. Simultaneous biochar and silica compounds successfully react with SnO2And (4) compounding.
Through determination, when the sample is used as an electrode material, the discharge capacity of the lithium ion battery under the current density of 0.1A/g is 1292.1mAh/g, the first coulombic efficiency reaches 61.9 percent, and the lithium ion battery still has 681.6mAh/g specific capacity (see figure 4) even after 100 times of charging and discharging (SnO)2The specific charge and discharge capacity of the negative electrode is reduced rapidly in the first 20 times, and the discharge capacity after the 20 th cycle is only 201.2 mAh/g. Visible, biochar/SiOxCoating pair SnO2The improvement effect of the cycle performance and the lithium storage performance is remarkable. FIG. 5 shows the prepared lithium ion battery cathode material and SiOx@SnO2And SnO2The frequency range of the impedance spectrum is 100000-0.01 Hz, and Si and SnO can be seen through ball milling2Coating a layer of silicon oxide (SiO) on its exteriorx) And after Sn is reduced, the resistance of the electrode is obviously reduced, and after a layer of biochar is further coated by ball milling, the resistance of the cathode is further reduced. Coated with biochar/SiOxThe coating is beneficial to electron conduction, and the electron transfer resistance is obviously reduced. The performance parameters of the lithium ion battery negative electrodes prepared in examples 1-4 are given in table 1.
TABLE 1
The invention provides a carbon-silicon coated tin dioxide composite, a preparation method thereof, and an application concept and method thereof as a lithium ion battery cathode material, and a method and a way for realizing the technical scheme are many. All the components not specified in the present embodiment can be realized by the prior art.
Claims (10)
1. A preparation method of a carbon-silicon coated tin dioxide compound is characterized by comprising the following steps:
(1) mixing the ground biomass with ionic liquid, and carbonizing to obtain biochar;
(2) mixing silica powder and SnO2Mixing the nano particles and then carrying out ball milling to obtain silicon oxide compound coated tin dioxide nano particles;
(3) adding the biochar obtained in the step (1) into the silicon oxide compound coated tin dioxide nano-particles obtained in the step (2), and continuing ball milling to obtain a biochar silicon coated tin dioxide compound;
(4) and (4) sieving the biological carbon silicon coated stannic oxide compound obtained in the step (3).
2. The method for preparing the carbon-silicon coated tin dioxide composite as claimed in claim 1, wherein in the step (1), the biomass is selected from any one or a combination of more than two of waste wood chips, straws, corn stalks, rice hulls, bagasse, cellulose, lignin and cotton;
in the ionic liquid, the cation is selected from any one of alkyl imidazole, alkyl pyridine or dialkyl imidazole quaternary ammonium salt, and the anion is selected from any one of dihydrogen phosphate, ferric tetrachloride ion or acetate.
3. The preparation method of the carbon-silicon coated tin dioxide composite as claimed in claim 1, wherein in the step (1), the biomass and the ionic liquid are stirred and mixed according to a mass ratio of 1: 2-5, the stirring speed is 400-500 rpm, and the stirring time is 6-10 hours.
4. The method for preparing the carbon-silicon coated tin dioxide composite according to claim 1, wherein in the step (1), the carbonization is performed under the protection of nitrogen, the temperature is raised to 1000-1600 ℃ at a temperature raising rate of 1-5 ℃/min, the temperature is kept for 2-6 h, and then the carbon-silicon coated tin dioxide composite is cooled to room temperature at a temperature lowering rate of 5-10 ℃/min.
5. The method for preparing a carbon-silicon coated tin dioxide composite according to claim 1, wherein in the step (2), the silicon powder and SnO2Mixing the nano particles according to the molar ratio of (1-3) to 1, and then ball-milling for 6-12 hours at the rotating speed of 500-600 revolutions/min.
6. The method for preparing the carbon-silicon coated tin dioxide composite according to claim 1, wherein in the step (3), the biological carbon and the silicon oxide compound coated tin dioxide nanoparticles are mixed according to a molar ratio of (1-3): 1, mixing, and then ball-milling for 6-12 h at a rotating speed of 500-600 r/min.
7. The method for preparing the carbon-silicon coated tin dioxide composite as claimed in claim 1, wherein in the step (4), the particle size of the sieved powder of the biological carbon-silicon coated tin dioxide composite is less than 100 meshes.
8. The carbon-silicon coated tin dioxide composite prepared by the preparation method of any one of claims 1 to 7.
9. The use of the carbon-silicon-coated tin dioxide composite of claim 8 as a negative electrode material for a lithium ion battery.
10. A lithium ion battery, characterized in that its negative electrode is made of the carbon-silicon-coated tin dioxide composite of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110586809.7A CN113314702B (en) | 2021-05-27 | 2021-05-27 | Carbon-silicon coated tin dioxide composite, preparation method thereof and application of carbon-silicon coated tin dioxide composite as lithium ion battery cathode material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110586809.7A CN113314702B (en) | 2021-05-27 | 2021-05-27 | Carbon-silicon coated tin dioxide composite, preparation method thereof and application of carbon-silicon coated tin dioxide composite as lithium ion battery cathode material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113314702A true CN113314702A (en) | 2021-08-27 |
| CN113314702B CN113314702B (en) | 2022-04-12 |
Family
ID=77375753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110586809.7A Active CN113314702B (en) | 2021-05-27 | 2021-05-27 | Carbon-silicon coated tin dioxide composite, preparation method thereof and application of carbon-silicon coated tin dioxide composite as lithium ion battery cathode material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113314702B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068895A (en) * | 2021-10-28 | 2022-02-18 | 华南理工大学 | Lignin-based graphene porous carbon nanosheet tin dioxide composite material and preparation and application thereof |
| CN114843496A (en) * | 2022-05-26 | 2022-08-02 | 蜂巢能源科技股份有限公司 | Silicon-based negative electrode material and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655543A (en) * | 2014-11-13 | 2016-06-08 | 安泰科技股份有限公司 | Metal/oxide composite negative electrode material and preparation method thereof |
| CN106654181A (en) * | 2017-03-01 | 2017-05-10 | 欣旺达电子股份有限公司 | Tin oxide-based negative electrode material and preparation method therefor |
| CN107482196A (en) * | 2017-08-06 | 2017-12-15 | 长沙善道新材料科技有限公司 | A kind of lithium ion battery composite nano materials and preparation method thereof |
| CN108493421A (en) * | 2018-04-08 | 2018-09-04 | 深圳新恒业电池科技有限公司 | A kind of preparation method of lithium ion battery tin-silicon substrate graphene ball negative material |
| CN109273675A (en) * | 2018-08-03 | 2019-01-25 | 深圳市山木新能源科技股份有限公司 | A kind of graphene composite material and preparation method thereof and negative electrode of lithium ion battery |
-
2021
- 2021-05-27 CN CN202110586809.7A patent/CN113314702B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655543A (en) * | 2014-11-13 | 2016-06-08 | 安泰科技股份有限公司 | Metal/oxide composite negative electrode material and preparation method thereof |
| CN106654181A (en) * | 2017-03-01 | 2017-05-10 | 欣旺达电子股份有限公司 | Tin oxide-based negative electrode material and preparation method therefor |
| CN107482196A (en) * | 2017-08-06 | 2017-12-15 | 长沙善道新材料科技有限公司 | A kind of lithium ion battery composite nano materials and preparation method thereof |
| CN108493421A (en) * | 2018-04-08 | 2018-09-04 | 深圳新恒业电池科技有限公司 | A kind of preparation method of lithium ion battery tin-silicon substrate graphene ball negative material |
| CN109273675A (en) * | 2018-08-03 | 2019-01-25 | 深圳市山木新能源科技股份有限公司 | A kind of graphene composite material and preparation method thereof and negative electrode of lithium ion battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068895A (en) * | 2021-10-28 | 2022-02-18 | 华南理工大学 | Lignin-based graphene porous carbon nanosheet tin dioxide composite material and preparation and application thereof |
| CN114843496A (en) * | 2022-05-26 | 2022-08-02 | 蜂巢能源科技股份有限公司 | Silicon-based negative electrode material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113314702B (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100565980C (en) | A kind of composite cathode material for lithium ion cell and preparation method thereof | |
| CN1315207C (en) | Composite negative pole material of Li-ion battery and its preparing process | |
| CN108598414B (en) | Amorphous zinc oxide/carbon composite lithium ion battery cathode material and preparation method thereof | |
| CN109216686A (en) | A kind of lithium ion battery silicon-carbon composite material and preparation method | |
| CN113314702B (en) | Carbon-silicon coated tin dioxide composite, preparation method thereof and application of carbon-silicon coated tin dioxide composite as lithium ion battery cathode material | |
| CN114447305B (en) | Multi-carbon-based quick-charge anode composite material and preparation method thereof | |
| CN111180714A (en) | Carbon/molybdenum dioxide/silicon/carbon composite material, battery cathode comprising same and lithium ion battery | |
| CN113479860B (en) | SbPO (styrene-ethylene-propylene-diene monomer) 4 Preparation method of nitrogen-doped carbon composite material | |
| CN109755532B (en) | Wood carbon fiber/metal oxide/graphene composite negative electrode material and preparation method and application thereof | |
| CN112652770A (en) | Silicon-carbon negative electrode material with low specific surface area and preparation method thereof | |
| CN108899499B (en) | Sb/Sn phosphate-based negative electrode material, preparation method thereof and application thereof in sodium ion battery | |
| CN115188949B (en) | Preparation method of mesocarbon microbead-silicon carbon composite negative electrode material | |
| Liang et al. | Hemp straw carbon and Ni/NiO embedded structure composites as anode materials for lithium ion batteries | |
| CN116344778A (en) | Low-expansion silicon-carbon negative electrode material and preparation method thereof | |
| CN114702022A (en) | Preparation method and application of hard carbon negative electrode material | |
| CN109742367B (en) | Wood carbon fiber/metal oxide composite negative electrode material and preparation method and application thereof | |
| CN110061197B (en) | Coal-based battery negative electrode material and preparation method and application thereof | |
| CN110797517A (en) | Preparation method of nickel-silver alloy particle doped silicon-carbon negative electrode material | |
| CN113097485B (en) | Sandwich-like structure SnSe/r-GO compound and preparation method and application thereof | |
| CN115566141A (en) | Metal-doped hard carbon composite material and preparation method and application thereof | |
| CN114203978B (en) | High-capacity graphite anode material and preparation method and application thereof | |
| CN114628655A (en) | Plant pompon hard carbon composite negative electrode material and preparation method and application thereof | |
| CN108649224B (en) | Method for preparing lithium ion battery cathode material based on biomass material, cathode material and battery | |
| CN116283363B (en) | High-energy-density quick-charging graphite composite material, preparation method and application | |
| CN113270580B (en) | Biological carbon/silicon nano material, preparation method thereof and application of biological carbon/silicon nano material as lithium ion battery cathode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20210827 Assignee: Suzhou Xineng Carbon Silicon Technology Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2024320000009 Denomination of invention: A carbon silicon coated tin dioxide composite and its preparation method, as well as its application as a negative electrode material for lithium-ion batteries Granted publication date: 20220412 License type: Common License Record date: 20240506 |
|
| EE01 | Entry into force of recordation of patent licensing contract |