CN117756174A - Two-dimensional TiO 2 /Ti 3 C 2 Preparation method and application of composite oxide - Google Patents
Two-dimensional TiO 2 /Ti 3 C 2 Preparation method and application of composite oxide Download PDFInfo
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- CN117756174A CN117756174A CN202311612674.2A CN202311612674A CN117756174A CN 117756174 A CN117756174 A CN 117756174A CN 202311612674 A CN202311612674 A CN 202311612674A CN 117756174 A CN117756174 A CN 117756174A
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- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 229910010413 TiO 2 Inorganic materials 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims description 18
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 16
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 15
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 11
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000007800 oxidant agent Substances 0.000 claims abstract description 5
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 11
- 229910001416 lithium ion Inorganic materials 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000007773 negative electrode material Substances 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 4
- 239000002086 nanomaterial Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 13
- 229910052744 lithium Inorganic materials 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000002033 PVDF binder Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 4
- 239000010405 anode material Substances 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 4
- 239000006245 Carbon black Super-P Substances 0.000 description 3
- 229910001290 LiPF6 Inorganic materials 0.000 description 3
- 238000003917 TEM image Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000007605 air drying Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012761 high-performance material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a two-dimensional TiO 2 /Ti 3 C 2 A method for producing a composite oxide and its use, said method comprising the steps of: adding two-dimensional lamellar nano into deionized waterMeter material MXene-Ti 3 C 2 Stirring the Ti source and the C source, adding hydrogen peroxide solution serving as an oxidant, stirring the mixture, transferring the mixture into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and placing the high-pressure reaction kettle in a blast drying box for hydrothermal reaction to obtain two-dimensional TiO 2 /Ti 3 C 2 A composite oxide. The invention uses hydrogen peroxide as oxidant by hydrothermal method, MXene-Ti 3 C 2 Is a Ti source and a C source; MXene-Ti 3 C 2 In situ oxidation by hydrogen peroxide to produce TiO 2 Original MXene-Ti 3 C 2 Is preserved to form a two-dimensional TiO 2 /Ti 3 C 2 Heterostructures exhibit good electrochemical performance.
Description
Technical Field
The invention relates to the technical field of lithium ion battery cathode materials, in particular to a two-dimensional TiO 2 /Ti 3 C 2 A preparation method and application of the composite oxide.
Background
Lithium Ion Battery (LIBs) materials are a research hotspot due to their excellent energy storage properties, and are widely used in electric automobiles and variable portable electronic devices. The development of safe and high-storage-capacity electrode materials has important significance. Graphite anodes have so far successfully led to the main commercial market due to their excellent stability and low cost, but have limited capacity, poor safety and low potential, forcing researchers to explore new high performance materials.
Many two-dimensional materials, such as phosphazenes, transition Metal Dihalides (TMDs), transition metal carbides/nitrides (mxnes), have been used as electrode materials for lithium ion batteries. Among them, mxnes is becoming a promising candidate material in the field of electrochemical energy storage due to its excellent metal conductivity and low cost. MXene and its derivatives as potential substitutes for traditional graphite have excellent properties of large and adjustable interlayer spacing, good conductivity, rich surface termination points, chemical components and the like. Specifically, the large and adjustable interlayer spacing facilitates rapid insertion and extraction of lithium ions; good conductivity means fast charge transfer; the rich surface ends and the different chemical compositions provide redox active sites. The above properties give MXene unique electrochemical properties, which make it exhibit excellent lithium ion storage properties.
However, the electrochemical cycle performance of single MXene is limited, and the synthesis of MXenes and other materials into hybrids by chemical modification, structural design, and other methods is the most widespread strategy to improve the lithium ion storage performance. Metal oxides are preferred materials for compounding with MXene due to their relatively high specific capacity and electrochemical stability. In recent years, some efforts have been made in the composite of MXene and metal oxide. The high conductivity of MXene can make up for the defect of low conductivity of metal oxide, and meanwhile, the unique two-dimensional nano structure of the MXene can also be used for buffering the volume expansion of the metal oxide in the charge-discharge process, so that a composite electrode material with better performance is hopefully obtained through the combination of the metal oxide and MXene. However, in the method for preparing the composite material reported at present, the preparation effect is poor by adopting simple methods such as mixing film drawing or mechanical mixing grinding, and the like, the MXene agglomeration is serious, and a uniformly dispersed composite structure is difficult to form; in addition, the existing reported preparation processes using a CVD method and a hydrothermal method are complex and have high cost. Therefore, it is a challenging problem to uniformly combine MXene and metal oxide in a simple preparation method to prepare a high performance composite electrode material.
Disclosure of Invention
1. The technical problems to be solved are as follows:
in view of the above technical problems, the present invention provides a two-dimensional TiO 2 /Ti 3 C 2 A preparation method and application of the composite oxide.
2. The technical scheme is as follows:
two-dimensional TiO 2 /Ti 3 C 2 The preparation method of the composite oxide comprises the following steps: adding two-dimensional layered nano material MXene-Ti into deionized water 3 C 2 Stirring the Ti source and the C source, adding hydrogen peroxide solution serving as an oxidant, stirring the mixture, transferring the mixture into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and placing the high-pressure reaction kettle in a blast drying box for hydrothermal reaction to obtain two-dimensional TiO 2 /Ti 3 C 2 A composite oxide.
Further, MXene-Ti 3 C 2 And hydrogen peroxide solution (30 wt%) in a mass-volume ratio of 150-210 mg:0.5 to 1.5mL.
Further, MXene-Ti 3 C 2 And deionized water in a mass volume ratio of 150-210 mg:15mL.
Further, the temperature of the hydrothermal reaction is 160-200 ℃, and the reaction time is 8-16 h.
Further, MXene-Ti is added into deionized water 3 C 2 Stirring for 3-10 min, and then adding hydrogen peroxide solution.
Further, after adding the hydrogen peroxide solution, stirring for 10-50 min, and transferring to a high-pressure reaction kettle with a polytetrafluoroethylene lining.
Further, the MXene-Ti 3 C 2 Is prepared by etching ternary layered Ti by hydrofluoric acid 3 AlC 2 The preparation method is the preparation method disclosed in the prior art, for example, the Chinese patent with the application number of CN201410812011. X.
Two-dimensional TiO prepared by the above method 2 /Ti 3 C 2 The composite oxide is applied as a negative electrode material of a lithium ion battery.
3. The beneficial effects are that:
the invention uses hydrogen peroxide as oxidant by hydrothermal method, MXene-Ti 3 C 2 Is a Ti source and a C source; MXene-Ti 3 C 2 In situ oxidation by hydrogen peroxide to produce TiO 2 Original MXene-Ti 3 C 2 Is preserved to form a two-dimensional TiO 2 /Ti 3 C 2 Heterostructures exhibit good electrochemical performance. The experimental operation is simple and controllable, the reaction condition is mild, the controllability and the repeatability are good, the operation process is green and environment-friendly, and the production cost is low.
Drawings
FIG. 1 is a two-dimensional TiO prepared in example 1 2 /Ti 3 C 2 SEM image of the composite oxide;
FIG. 2 is a two-dimensional TiO prepared in example 1 2 /Ti 3 C 2 TEM image of composite oxide.
FIG. 3 is a two-dimensional TiO prepared in example 1 2 /Ti 3 C 2 XRD pattern of the composite oxide;
FIG. 4 is a two-dimensional TiO prepared in example 1 2 /Ti 3 C 2 The cycle performance diagram of the composite oxide as the negative electrode material of the lithium battery;
FIG. 5 shows a real objectExample 1 two-dimensional TiO 2 /Ti 3 C 2 The composite oxide is used as a multiplying power performance graph of a lithium battery anode material;
FIG. 6 is a two-dimensional TiO prepared in example 2 2 /Ti 3 C 2 The cycle performance diagram of the composite oxide as the negative electrode material of the lithium battery;
FIG. 7 is a two-dimensional TiO prepared in example 2 2 /Ti 3 C 2 The composite oxide is used as a multiplying power performance graph of a lithium battery anode material;
FIG. 8 is a two-dimensional TiO prepared in example 3 2 /Ti 3 C 2 The cycle performance diagram of the composite oxide as the negative electrode material of the lithium battery;
FIG. 9 is a two-dimensional TiO prepared in example 3 2 /Ti 3 C 2 And the composite oxide is used as a multiplying power performance graph of a lithium battery anode material.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in figures 1 to 9 of the drawings,
example 1
Two-dimensional TiO 2 /Ti 3 C 2 The preparation method of the composite oxide comprises the following steps:
150 mg of MXene-Ti was added to 15mL deionized water 3 C 2 Stirring for 30 min, adding 0.5 mL hydrogen peroxide solution (30wt%) and stirring for 10 min, transferring into high-pressure reaction kettle with polytetrafluoroethylene lining, placing into forced air drying oven to make hydrothermal reaction, making reaction at 160deg.C for 8 h, washing, separating and drying to obtain two-dimensional TiO 2 /Ti 3 C 2 A composite oxide.
For the prepared two-dimensional TiO 2 /Ti 3 C 2 The detection of the composite oxide is carried out, and FIG. 1 shows a two-dimensional TiO prepared 2 /Ti 3 C 2 SEM image of composite oxide, FIG. 2 is a schematic diagram showing two-dimensional TiO prepared 2 /Ti 3 C 2 TEM image of composite oxide, FIG. 3 is a prepared two-dimensional TiO 2 /Ti 3 C 2 XRD pattern of the composite oxide.
From FIG. 1, it can be seen that TiO 2 Uniformly grown in MXene-Ti with sandwich structure 3 C 2 On the nanosheets; the TEM image of FIG. 2 shows that the prepared sample is TiO 2 /Ti 3 C 2 A complex; FIG. 3 XRD pattern further demonstrates that TiO is formed in situ after oxidation 2 /Ti 3 C 2 A complex.
The two-dimensional TiO is prepared by the following method 2 /Ti 3 C 2 The composite oxide is made into an electrode.
Respectively weighing two-dimensional TiO according to the mass ratio of 80:10:10 2 /Ti 3 C 2 The composite oxide comprises super-P, PVDF, an electrode, a metal lithium sheet, an electrolyte, a polypropylene microporous film and a simulated lithium ion battery, wherein the PVDF is uniformly ground to prepare the electrode, the metal lithium sheet is a counter electrode, the electrolyte is 1mol/L LiPF6/EC, the DMC (1:1), and the polypropylene microporous film is a diaphragm. FIG. 4 is a two-dimensional TiO prepared 2 /Ti 3 C 2 Cycling performance graph as a lithium battery negative electrode material. As can be seen from the cycle performance chart of FIG. 4, the prepared anode material has high reversible capacity of 0.1 A.g -1 The capacity of the material can reach 287.6mAh.g -1 The method comprises the steps of carrying out a first treatment on the surface of the As can be seen from the multiplying power performance diagram of FIG. 5, the current density was switched back to 0.1 A.g at the 60 th cycle -1 After that, 291.5 mAh.g was maintained -1 The capacity of the electrode shows that the novel electrode has excellent structural stability.
Example 2
Two-dimensional TiO 2 /Ti 3 C 2 The preparation method of the composite oxide comprises the following steps:
180 mg of MXene-Ti was added to 15mL deionized water 3 C 2 Stirring for 7 min, adding 1 mL hydrogen peroxide solution (30wt%) and stirring for 30 min, transferring into high-pressure reaction kettle with polytetrafluoroethylene lining, placing into forced air drying oven to make hydrothermal reaction, making reaction at 180deg.C for 12 h, after the reaction is completed, washing the product, separating and drying so as to obtain the invented two-dimensional TiO 2 /Ti 3 C 2 A composite oxide.
The two-dimensional TiO is prepared by the following method 2 /Ti 3 C 2 Composite oxide for producing electricityAnd (5) a pole.
Respectively weighing two-dimensional TiO according to the mass ratio of 80:10:10 2 /Ti 3 C 2 The composite oxide comprises super-P, PVDF, an electrode, a metal lithium sheet, an electrolyte, a polypropylene microporous film and a simulated lithium ion battery, wherein the PVDF is uniformly ground to prepare the electrode, the metal lithium sheet is a counter electrode, the electrolyte is 1mol/L LiPF6/EC, the DMC (1:1), and the polypropylene microporous film is a diaphragm. As can be seen from the cycle performance chart of FIG. 6, the test was conducted in the same manner as in example 1, at 0.1A. G -1 The capacity can reach 334.5 mAh.g -1 The method comprises the steps of carrying out a first treatment on the surface of the As can be seen from the rate performance chart of FIG. 7, the current density was switched back to 0.1 A.g at the 60 th cycle -1 After that, 341.6 mAh.g was maintained -1 The capacity of the electrode shows that the novel electrode has excellent structural stability.
Example 3
Two-dimensional TiO 2 /Ti 3 C 2 The preparation method of the composite oxide comprises the following steps:
210mg of MXene-Ti was added to 15mL deionized water 3 C 2 Stirring for 10 min, adding 1.5mL hydrogen peroxide solution (30wt%) and stirring for 50min, transferring into high-pressure reaction kettle with polytetrafluoroethylene lining, placing into forced air drying oven to make hydrothermal reaction, making reaction at 200 deg.C for 16 h, washing, separating and drying to obtain two-dimensional TiO 2 /Ti 3 C 2 A composite oxide.
The two-dimensional TiO is prepared by the following method 2 /Ti 3 C 2 The composite oxide is made into an electrode.
Respectively weighing two-dimensional TiO according to the mass ratio of 80:10:10 2 /Ti 3 C 2 The composite oxide comprises super-P, PVDF, an electrode, a metal lithium sheet, an electrolyte, a polypropylene microporous film and a simulated lithium ion battery, wherein the PVDF is uniformly ground to prepare the electrode, the metal lithium sheet is a counter electrode, the electrolyte is 1mol/L LiPF6/EC, the DMC (1:1), and the polypropylene microporous film is a diaphragm. As can be seen from the cycle performance chart of FIG. 8, the test was conducted in the same manner as in example 1, at 0.1A. G - 1 The capacity can reach 263.1 mAh.g -1 The method comprises the steps of carrying out a first treatment on the surface of the As can be seen from the rate performance chart of FIG. 9, the current density was switched back to 0.1A g at the 60 th cycle -1 After that, can be protectedHold 279.4 mAh.g -1 The capacity of the electrode shows that the novel electrode has excellent structural stability.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that the scope of the invention shall be limited only by the claims appended hereto.
Claims (8)
1. Two-dimensional TiO 2 /Ti 3 C 2 The preparation method of the composite oxide is characterized by comprising the following steps: adding two-dimensional layered nano material MXene-Ti into deionized water 3 C 2 Stirring the Ti source and the C source, adding hydrogen peroxide solution serving as an oxidant, stirring the mixture, transferring the mixture into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and placing the high-pressure reaction kettle in a blast drying box for hydrothermal reaction to obtain two-dimensional TiO 2 /Ti 3 C 2 A composite oxide.
2. A two-dimensional TiO according to claim 1 2 /Ti 3 C 2 A process for producing a composite oxide characterized by comprising reacting MXene-Ti 3 C 2 And hydrogen peroxide solution (30 wt%) in a mass-volume ratio of 150-210 mg:0.5 to 1.5mL.
3. A two-dimensional TiO according to claim 1 or 2 2 /Ti 3 C 2 A process for producing a composite oxide characterized by comprising reacting MXene-Ti 3 C 2 And deionized water in a mass volume ratio of 150-210 mg:15mL.
4. A two-dimensional TiO according to claim 3 2 /Ti 3 C 2 The preparation method of the composite oxide is characterized in that the temperature of the hydrothermal reaction is 160-200 ℃ and the reaction time is 8-16 h.
5. A second as defined in claim 4Vitamin TiO 2 /Ti 3 C 2 The preparation method of the composite oxide is characterized in that MXene-Ti is added into deionized water 3 C 2 Stirring for 3-10 min, and then adding hydrogen peroxide solution.
6. A two-dimensional TiO according to claim 3 or 4 2 /Ti 3 C 2 The preparation method of the composite oxide is characterized by adding hydrogen peroxide solution, stirring for 10-50 min, and transferring to a high-pressure reaction kettle with a polytetrafluoroethylene lining.
7. A two-dimensional TiO according to claim 6 2 /Ti 3 C 2 A process for producing a composite oxide characterized by comprising reacting a compound of MXene-Ti 3 C 2 Is prepared by etching ternary layered Ti by hydrofluoric acid 3 AlC 2 The preparation method is that the product is obtained.
8. A two-dimensional TiO prepared by the method of claim 1 2 /Ti 3 C 2 The composite oxide is applied as a negative electrode material of a lithium ion battery.
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| CN202311612674.2A CN117756174A (en) | 2023-11-29 | 2023-11-29 | Two-dimensional TiO 2 /Ti 3 C 2 Preparation method and application of composite oxide |
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