CN115101357B - Preparation method and application of ternary nickel cobalt tungsten telluride composite material - Google Patents
Preparation method and application of ternary nickel cobalt tungsten telluride composite material Download PDFInfo
- Publication number
- CN115101357B CN115101357B CN202210666626.0A CN202210666626A CN115101357B CN 115101357 B CN115101357 B CN 115101357B CN 202210666626 A CN202210666626 A CN 202210666626A CN 115101357 B CN115101357 B CN 115101357B
- Authority
- CN
- China
- Prior art keywords
- electrode
- wte
- nickel cobalt
- carbon cloth
- cobalt tungsten
- 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.)
- Active
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- YCOASTWZYJGKEK-UHFFFAOYSA-N [Co].[Ni].[W] Chemical compound [Co].[Ni].[W] YCOASTWZYJGKEK-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000004744 fabric Substances 0.000 claims abstract description 50
- 229910017709 Ni Co Inorganic materials 0.000 claims abstract description 44
- 229910003267 Ni-Co Inorganic materials 0.000 claims abstract description 44
- 229910003262 Ni‐Co Inorganic materials 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 22
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 238000004070 electrodeposition Methods 0.000 claims abstract description 20
- 239000002135 nanosheet Substances 0.000 claims abstract description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003792 electrolyte Substances 0.000 claims abstract description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000001301 oxygen Substances 0.000 claims abstract description 10
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910021607 Silver chloride Inorganic materials 0.000 claims abstract description 9
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims abstract description 9
- 229910052786 argon Inorganic materials 0.000 claims abstract description 8
- 230000007547 defect Effects 0.000 claims abstract description 8
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001930 tungsten oxide Inorganic materials 0.000 claims abstract description 7
- 239000011206 ternary composite Substances 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000007772 electrode material Substances 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000012153 distilled water Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 12
- 239000002064 nanoplatelet Substances 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 8
- 235000019441 ethanol Nutrition 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004005 microsphere Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- 238000000026 X-ray photoelectron spectrum Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000349 field-emission scanning electron micrograph Methods 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 239000002086 nanomaterial Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- NZIHMSYSZRFUQJ-UHFFFAOYSA-N 6-chloro-1h-benzimidazole-2-carboxylic acid Chemical compound C1=C(Cl)C=C2NC(C(=O)O)=NC2=C1 NZIHMSYSZRFUQJ-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004729 solvothermal method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CXXKWLMXEDWEJW-UHFFFAOYSA-N tellanylidenecobalt Chemical compound [Te]=[Co] CXXKWLMXEDWEJW-UHFFFAOYSA-N 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 239000006181 electrochemical material Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000037427 ion transport Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 150000004772 tellurides Chemical class 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- -1 transition metal tellurides Chemical class 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/02—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof using combined reduction-oxidation reactions, e.g. redox arrangement or solion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Materials Engineering (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Abstract
The invention discloses a preparation method and application of a ternary nickel cobalt tungsten telluride composite, comprising the following steps: CC-WO of tungsten oxide nano-sheet with oxygen defect grown on carbon cloth 3‑x Carrying out chemical reaction with tellurium powder under a hydrogen-argon mixed atmosphere and a certain temperature to obtain CC-WTE growing on carbon cloth 2 The method comprises the steps of carrying out a first treatment on the surface of the The obtained CC-WTE 2 Electrochemical deposition in a three-electrode system to obtain CC-WTE 2 -a Ni-Co ternary composite wherein in a three electrode system the electrolyte is Ni (NO 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O mixed solution, working electrode is CC-WTE 2 The reference electrode is an Ag/AgCl electrode, and the counter electrode is a Pt sheet electrode. The prepared CWNC-8 electrode has excellent electrochemical performance and has a current density of 1A g ‑1 Specific capacitance 739 and F g at this time ‑1 After 5000 cycles, the capacitance retention rate is 84%, which is improved by 12% compared with the CC-Ni-Co electrode. At a power density of 3000W kg ‑1 At the same time, 23.4W/h kg is still reserved ‑1 Is a high energy density.
Description
Technical Field
The invention relates to the technical field of electrode composite materials, in particular to a preparation method of a ternary nickel cobalt tungsten telluride composite material and application of the ternary nickel cobalt tungsten telluride composite material in an electrode material.
Background
The transition metal oxides TMOs composed of a plurality of metal elements generally have more excellent electrochemical properties, and are capable of storing more electric charges because a plurality of ions have more redox valence states. However, the single/multiple TMOs have the defects of low electronic conductivity, serious structural collapse after repeated charge and discharge, influence on service life and further limitation in practical application. At present, the research of material systems such as multi-element TMOs, sulfides and the like is mature, but the research of tellurides is relatively little, and particularly, the research of transition metal tellurides of multi-element systems is carried out. Because of the metal characteristic of tellurium, the tellurium has smaller electronegativity, and the formed transition metal telluride has a narrower band gap structure and better chemical stability, and is also expected to be used as an excellent supercapacitor SC electrode material, and the research on nickel telluride or cobalt telluride nano materials in the prior art shows that the nickel telluride and cobalt telluride compounds have great application value in the fields of new energy and electrocatalysis. In the prior study, the performance of the TMO material is found to be further improved, and the performance of the material can be further improved when the composite material is prepared.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a method for preparing a ternary nickel cobalt tungsten telluride composite, comprising the steps of:
step one, tungsten oxide nano-sheets CC-WO with oxygen defects grown on carbon cloth 3-x Carrying out chemical reaction with tellurium powder under a hydrogen-argon mixed atmosphere and a certain temperature to obtain CC-WTE growing on carbon cloth 2 ；
Step two, the obtained CC-WTE 2 Electrochemical deposition in a three-electrode system to obtain CC-WTE 2 -a Ni-Co ternary composite wherein in a three electrode system the electrolyte is Ni (NO 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O mixed solution, working electrode is CC-WTE 2 The reference electrode is an Ag/AgCl electrode, and the counter electrode is a Pt sheet electrode.
Preferably, in the first step, the tungsten oxide nano-sheet CC-WO with oxygen defects on the carbon cloth is grown 3-x WO on 3-x The mass ratio of the powder to tellurium powder is 3:40-60; the tellurium powder and CC-WO 3-x The distance of (2) is 1-3 cm.
Preferably, in the first step, the chemical reaction is performed in a high-temperature tube furnace, and the reaction temperature is: heating to 600-700 ℃ at a speed of 1-3 ℃/min, and preserving heat for 1-3 hours, wherein the volume fraction of Ar in the hydrogen-argon mixed atmosphere is 90%, H 2 Is 10% by volume.
Preferably, in the second step, ni (NO 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O is dissolved in distilled water to form electrolyte, and is loaded with CC-WTE 2 Cutting carbon cloth into 1cm multiplied by 1cm, using Ag/AgCl electrode and Pt sheet electrode as reference electrode and counter electrode respectively, circulating for 5-15 circles in-1.2-0.2V at scanning rate of 3-8 mV/s, washing the obtained sample with deionized water and ethanol for 3-5 times, and drying in a vacuum drying oven at 50-70deg.C for 10-15 h to obtain CC-WTE 2 -a Ni-Co ternary composite.
Preferably, the Ni (NO 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 The mass ratio of O is 1:1; the Ni (NO) 3 ) 2 ·6H 2 The mass volume ratio of O to distilled water is 8mg to 5mL.
The invention also provides a ternary nickel cobalt tungsten telluride composite prepared by the preparation method.
The invention also provides application of the ternary nickel cobalt tungsten telluride composite prepared by the preparation method in an electrode material.
The invention also provides an electrochemical test method of the ternary nickel cobalt tungsten telluride composite prepared by the preparation method, wherein in a three-electrode system, the ternary nickel cobalt tungsten telluride composite is used as a working electrode, hg/HgO is used as a reference electrode, pt sheets are used as a counter electrode, 2M KOH is used as electrolyte, and a CHI660E electrochemical workstation is used for carrying out electrochemical performance test on the ternary nickel cobalt tungsten telluride composite.
The tungsten oxide nano-sheet CC-WO with oxygen defect grown on the carbon cloth in the invention 3-x The preparation method of (2) comprises the following steps: firstly, preparing a piece of carbon cloth with the length of 2cm multiplied by 5cm, sequentially cleaning the carbon cloth with deionized water and ethanol for 15 minutes under ultrasonic treatment, and then drying; treating the dried carbon cloth with oxygen plasma for 15 minutes to increase the hydrophilicity of the surface of the carbon cloth; weigh 0.3g WCl 6 Dissolving in 60mL glacial acetic acid, and stirring at room temperature for 3h to obtain a pale yellow solution; placing the treated carbon cloth into the light yellow solution, transferring the obtained mixture into a 100mL stainless steel reaction kettle, sealing, performing solvothermal reaction at 180 ℃ in an oven for 12 hours, naturally cooling to room temperature, taking out the carbon cloth, fully flushing the carbon cloth with absolute ethyl alcohol and deionized water for 3-5 times, placing the carbon cloth in the oven, and drying at 60 ℃ for 12 hours to obtain WO (WO) with a blue layer uniformly covered on a CC (ceramic substrate) 3-x Is designated as CC-WO 3-x 。
The invention at least comprises the following beneficial effects:
(1) Successfully preparing the CC-WTE with the ternary composite structure on the carbon cloth through high-temperature telluride reaction and electrodeposition method 2 The Ni-Co nano-sheets further improve the conductivity of the material; by means of CC-WTE 2 As a substrate, it cooperates with Ni-Co nanoplatelets, CC-WTE 2 The Ni-Co electrode realizes higher specific capacitance and cycle stability than the direct growth of Ni-Co nano-sheets on carbon cloth alone, which results from the ternary mixed structure further improving CC-WTE 2 The electron conductivity of the Ni-Co electrode accelerates the redox kinetics while the inter-crosslinked nanoplatelet structure is exposed moreProvides a channel for the transmission of electrons and ions, and greatly accelerates the transmission speed of ions in the electrode material.
(2) The prepared CWNC-8 electrode has excellent electrochemical performance and has a current density of 1A g -1 Specific capacitance 739 and F g at this time -1 After 5000 cycles, the capacitance retention rate is 84%, which is improved by 12% compared with the CC-Ni-Co electrode. At a power density of 3000W kg -1 At the same time, 23.4W/h kg is still reserved -1 Is a high energy density.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Description of the drawings:
FIG. 1 shows CC-WTE at different magnification according to the present invention 2 FESEM image of (C);
FIG. 2 shows CC-WO at different magnification according to the invention 3-x FESEM image of (C);
FIG. 3 is a FESEM image at various magnifications, wherein a-1 to a-3: CWNC-6; b-1 to b-3: CWNC-8; c-1 to c-3: CWNC-10;
FIG. 4 is a TEM image of the CWNC-8 of the present invention;
FIG. 5 is an XRD spectrum of a material prepared in accordance with the present invention;
FIG. 6 is a spectrum of CWNC-8 prepared according to the present invention, wherein a: cWNC-8XPS full spectrum; b: te 3d; c: w4 f; d: co 2p; e: ni 2p;
FIG. 7 is a schematic diagram of a CC-WTE prepared according to the present invention 2 CWNC-6, CWNC-8, CWNC-10 and CC-Ni-Co electrodes: a, b) at 30mV s -1 CV curve under c, d) at 2A g -1 A lower GCD curve;
FIG. 8 is a) CV curve of CWNC-8 at different scanning rates, b) GCD curve of CWNC-8 at different current densities, c) specific capacitances of CWNC-6, CWNC-8, CWNC-10 and CC-Ni-Co electrodes at different current densities, d) CC-WTE 2 EIS curves of CWNC-6, CWNC-8, CWNC-10 and CC-Ni-Co electrodes;
FIG. 9 is a CWNC-8 electrode prepared according to the present invention: a) Ragone plot, b) cycle life, c) cycle life of CC-Ni-Co electrode.
The specific embodiment is as follows:
the present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Tungsten oxide nanoplatelets CC-WO with oxygen defects grown on carbon cloth in the following examples 3-x The preparation method of (2) comprises the following steps: firstly, preparing a piece of carbon cloth with the length of 2cm multiplied by 5cm, sequentially cleaning the carbon cloth with deionized water and ethanol for 15 minutes under ultrasonic treatment, and then drying; treating the dried carbon cloth with oxygen plasma for 15 minutes to increase the hydrophilicity of the surface of the carbon cloth; weigh 0.3g WCl 6 Dissolving in 60mL glacial acetic acid, and stirring at room temperature for 3h to obtain a pale yellow solution; placing the treated carbon cloth into the light yellow solution, transferring the obtained mixture into a 100mL stainless steel reaction kettle, sealing, performing solvothermal reaction at 180 ℃ in an oven for 12 hours, naturally cooling to room temperature, taking out the carbon cloth, fully flushing the carbon cloth with absolute ethyl alcohol and deionized water for 3-5 times, placing the carbon cloth in the oven, and drying at 60 ℃ for 12 hours to obtain WO (WO) with a blue layer uniformly covered on a CC (ceramic substrate) 3-x Is designated as CC-WO 3-x 。
Example 1:
a preparation method of a ternary nickel cobalt tungsten telluride composite material comprises the following steps:
step one, preparing CC-WTE through telluride reaction in a high temperature tube furnace 2 The method comprises the steps of carrying out a first treatment on the surface of the CC-WO is first applied 3-x (on carbon cloth WO) 3-x About 30 mg) and 500mg Te powder were placed in the same quartz boat, te powder and CC-WO 3-x About 2cm apart; before the reaction, the tube furnace was subjected to three vacuum washes, and then argon and hydrogen were used as a shielding gas and carrier gas (Ar 90%, H) 2 10%), set the programming temperature: raising the temperature to 650 ℃ at 2 ℃/min (20 min), and preserving the temperature for 2 hours; after the telluride reaction is completed, naturally cooling the tube furnace to room temperature to obtain the carbon-containing materialCloth-grown CC-WTE 2 The method comprises the steps of carrying out a first treatment on the surface of the The CC-WTE is obtained by weighing the mass of the carbon cloth before and after the telluride reaction 2 Is 1.495mg/cm in mass 2 ；
Step two, preparing electrolyte: separately weigh Ni (NO) 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O800 mg each was dissolved in 500mL distilled water;
electrodeposition process: load CC-WTE 2 Cutting carbon cloth into 1cm×1cm, using as working electrode, ag/AgCl electrode and Pt electrode as reference electrode and counter electrode, circulating for 6 times at scanning rate of 5mV/s in-1.2-0.2V, washing with deionized water and ethanol for 3-5 times, drying to obtain sample, and recording as CC-WTE 2 -Ni-Co-6 (CMNC-6); the active material loading is 2.055mg/cm 2 ；
Example 2:
a preparation method of a ternary nickel cobalt tungsten telluride composite material comprises the following steps:
step one, preparing CC-WTE through telluride reaction in a high temperature tube furnace 2 The method comprises the steps of carrying out a first treatment on the surface of the CC-WO is first applied 3-x (on carbon cloth WO) 3-x About 30 mg) and 500mg Te powder were placed in the same quartz boat, te powder and CC-WO 3-x About 2cm apart; before the reaction, the tube furnace was subjected to three vacuum washes, and then argon and hydrogen were used as a shielding gas and carrier gas (Ar 90%, H) 2 10%), set the programming temperature: raising the temperature to 650 ℃ at 2 ℃/min (20 min), and preserving the temperature for 2 hours; after the telluride reaction is completed, naturally cooling the tube furnace to room temperature to obtain CC-WTE growing on the carbon cloth 2 The method comprises the steps of carrying out a first treatment on the surface of the The CC-WTE is obtained by weighing the mass of the carbon cloth before and after the telluride reaction 2 Is 1.495mg/cm in mass 2 ；
Step two, preparing electrolyte: separately weigh Ni (NO) 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O800 mg each was dissolved in 500mL distilled water;
electrodeposition process: load CC-WTE 2 The carbon cloth is cut into 1cm multiplied by 1cm and then is used as a working electrode, an Ag/AgCl electrode and a Pt sheet electrode are used as a reference electrode and a counter electrode, within-1.2-0.2V,the sample obtained after drying at a scanning rate of 5mV/s and washing with deionized water and ethanol for 3-5 times after 8 circles of circulation is recorded as CC-WTE 2 -Ni-Co-8 (CMNC-8); the active material loading is 2.245mg/cm 2 ；
Example 3:
a preparation method of a ternary nickel cobalt tungsten telluride composite material comprises the following steps:
step one, preparing CC-WTE through telluride reaction in a high temperature tube furnace 2 The method comprises the steps of carrying out a first treatment on the surface of the CC-WO is first applied 3-x (on carbon cloth WO) 3-x About 30 mg) and 500mg Te powder were placed in the same quartz boat, te powder and CC-WO 3-x About 2cm apart; before the reaction, the tube furnace was subjected to three vacuum washes, and then argon and hydrogen were used as a shielding gas and carrier gas (Ar 90%, H) 2 10%), set the programming temperature: raising the temperature to 650 ℃ at 2 ℃/min (20 min), and preserving the temperature for 2 hours; after the telluride reaction is completed, naturally cooling the tube furnace to room temperature to obtain CC-WTE growing on the carbon cloth 2 The method comprises the steps of carrying out a first treatment on the surface of the The CC-WTE is obtained by weighing the mass of the carbon cloth before and after the telluride reaction 2 Is 1.495mg/cm in mass 2 ；
Step two, preparing electrolyte: separately weigh Ni (NO) 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O800 mg each was dissolved in 500mL distilled water;
electrodeposition process: load CC-WTE 2 Cutting carbon cloth into 1cm×1cm, using as working electrode, ag/AgCl electrode and Pt electrode as reference electrode and counter electrode, circulating for 10 times at scanning rate of 5mV/s in-1.2-0.2V, washing with deionized water and ethanol for 3-5 times, drying to obtain sample, and recording as CC-WTE 2 -Ni-Co-8 (CMNC-8); active material loading of 2.525mg/cm 2 ；
Comparative example 1:
step two, preparing electrolyte: separately weigh Ni (NO) 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O800 mg each was dissolved in 500mL distilled water;
electrodeposition process: cutting carbon cloth into 1cm multiplied by 1cm, using the carbon cloth as a working electrode, using an Ag/AgCl electrode and a Pt sheet electrode as a reference electrode and a counter electrode, circulating for 8 circles at a scanning rate of 5mV/s in-1.2-0.2V, using deionized water and ethanol to wash for 3-5 times, and marking a sample obtained after drying as CC-Ni-Co-8;
CC-WTE obtained through high-temperature tellurium reaction 2 SEM of (2) is shown in figure 1. CC-WTE 2 CC-WO with precursor is reserved 3-x (FIG. 2) the same topographical features, it is evident that there are a large number of WTE on the carbon cloth 2 Sheet and WTE 2 WTE of sheet 2 The hollow microsphere, the mixed nano structure formed by the nano sheet and the hollow microsphere is beneficial to the transmission of electrons and ions, and can improve the reaction kinetics. Then, with CC-WTE 2 The nano-sheets and the hollow microspheres are used as supporting substrates, and the nano-sheets and the hollow microspheres are further prepared in CC-WTE by an electrochemical deposition method 2 Growing Ni-Co nano-sheets on the surface, and obtaining CC-WTE under different deposition time 2 SEM of Ni-Co is shown in FIG. 3. FIG. 3 shows FESEM images of CWNC-6, CWNC-8 and CWNC-10 at different magnifications. As can be seen from the figure, CC-WTE is obtained after electrochemical deposition for different times 2 Ni-Co retains CC-WTE 2 And partially hollow microsphere structures. At a shorter electrodeposition time, at CC-WTE 2 The surface of (a) is formed with non-uniform and loose interconnected Ni-Co nanoplatelets, as can be seen from FIGS. 3a-1 to a-3, raw CC-WTE 2 The hollow sphere structure of (3 a-2) was not fully opened, and as the electrodeposition time increased to 8 turns, it was seen that the interconnected porous Ni-Co nanoplatelets were uniformly covered on CC-WTE 2 And the primary CC-WTE at that time 2 Is fully open (fig. 3 b-2), and CC-WTe can be seen in fig. 3b-1 and b-2 2 The lamellar and Ni-Co nanoplatelet structures cross-link with each other, without the presence of a distinct hollow spherical structure, where the abundant void space is fully open. As the electrodeposition time was 10 turns, denser Ni-Co nanoplatelets could be observed from FIGS. 3c-1 to c-3, which could be associated with the increase in electrodeposition time to make Ni-Co nanoplatelets CC-WTE 2 In connection with self-aggregation of the surface, such a relatively dense structure may lead to a slow rate of electrolyte ions into the interior of the electrochemical material, possibly causing electrochemistryThe performance is reduced. FIGS. 3d-1 to d-3 are SEM images of CC-Ni-Co samples obtained by electrodeposition directly on carbon cloth. From the figure, it is apparent that the lamellar structure, i.e., the non-uniform growth of the Ni-Co nano-sheets on the surface of the carbon cloth, has a locally apparent agglomeration phenomenon, which may lead to poor electrochemical performance. FIG. 4 is a transmission electron microscope image of CWNC-8, from which the lamellar porous structure of the CWNC-8 electrode can be clearly seen.
The crystal structure of the resulting electrode material was characterized by XRD. FIG. 5 is a diagram of CC-WO 3-x ，CC-WTe 2 And CWNC-8 XRD patterns. In CC-WTE 2 In XRD pattern of (2) was observed that there was a broad peak of carbon cloth at 26℃for 2. Theta. Belonging to WO 3-x The characteristic peaks of (3) disappear, and the (002), (104), (111), (013), (203), (006), (015), (301), (107) and (017) crystal planes corresponding to WTe2 (JCPDS No. 81-1903) at 2θ of 12.5 °, 29 °, 29.8 °, 31.8 °, 34.2 °, 38.3 °, 41 °, 43.6 °, 47.3 ° and 52.8 °, respectively, indicate successful obtaining of CC-WTe after high temperature telluride reaction 2 . And CC-WTE 2 All diffraction peaks in Ni-Co are almost identical to those of CC-WTE 2 At the same position, no new additional diffraction peak appears, and the strong diffraction peak at about 34 degrees 2 theta becomes a broad peak, indicating that the peak at CC-WTE 2 The Ni-Co nano sheet which is grown by electrodeposition has an amorphous structure. The amorphous structure is beneficial to improving the electronic conductivity, and further can improve the electrochemical performance.
The chemical composition and elemental valence of the CWNC-8 samples were studied by XPS. XPS full spectrum images of CWNC-8 samples are shown in FIG. 6a, which contain C, te, W, co, ni and O six elements, the presence of which may result from oxidation or oxygen adsorption of the surface of the sample exposed to air. FIG. 6b shows an XPS spectrum of Te 3d with peaks at Te 3d near 575.9eV and 586.3eV 5/2 And 3d 3/2 Te was shown to exist mainly in the form of-2 valence. FIG. 6c shows XPS spectra of W4f, two pairs of peaks in the XPS spectra of W4f, two peaks at 35.3eV and 37.4eV corresponding to W 6+ 4f 5/2 And 4f 7/2 While the 33.0eV peak corresponds to W 4+ . The Co 2p peak of CWNC-8 fitted two satellite peaks, located at 795.8eV and 780.4eV, respectively, indicating C thereino is +2 valent (FIG. 6 d). As shown in FIG. 6e, there are four peaks in the Ni 2p XPS spectrum, in which two main peaks at 855.2 and 873.1eV respectively belong to Ni 2p 1/2 And Ni 2p 3/2 Satellite peaks specific for Ni 2p, located beside each main peak, 861.1 and 880.4eV, indicate that Ni is present at +2 valency with the CWNC-8 sample.
The electrochemistry of all samples was evaluated using a standard three electrode system with 2M KOH solution as electrolyte. FIG. 7 shows CC-WTE 2 And CWNC-6, CWNC-8 and CWNC-10 obtained after different electrodepositing turns, and CC-Ni-Co obtained directly through electrodepositing on carbon cloth at 30mV s -1 CV Curve under 2A g -1 GCD curve tested at current density. CC-WTE 2 The CV curve and the GCD curve of (C) intuitively show CC-WTE 2 Relatively inactive in the test system and contributes negligible to the overall specific capacitance of the electrode, CC-WTe 2 The method is mainly used for providing a constructed porous channel and providing good support for the growth of the nickel-cobalt nano-sheets in the later stage so as to facilitate the loading of the nickel-cobalt nano-sheets. CV and GCD curves of CC-Ni-Co electrodes obtained by directly growing nickel-cobalt nanoplatelets on carbon cloth show that when the scanning rate is increased to 30mV s -1 In the case of a severe polarization effect, the curve shape is greatly changed (the inset in FIG. 7a shows that CC-Ni-Co directly electrodeposited on carbon cloth is scanned at a speed of 10mV s -1 Lower CV curve), similar phenomena can be observed in the GCD curve of CC-Ni-Co, the discharge curve and the charge curve of CC-Ni-Co are not completely symmetrical, and a large voltage drop can be observed for CC-Ni-Co, indicating that the CC-Ni-Co electrode has poor electron conductivity and slow electron/ion transport kinetics, which may be related to a larger contact resistance and a porous structure without openness after direct growth.
From FIG. 7 it can be seen that CWNC-8 has the largest curve integration area and the longest discharge time, indicating that CWNC-8 has the highest specific capacitance, which is mainly due to the synergistic effect of the rich hollow structure of the internal open channels of CWNC-8 and the Ni-Co nanosheets with high activity. At the same time, CWNC-6, CWNC-8 and CWNC-10 samples were at 30mV s -1 At the scanning rateAll CV curves remain similar in shape, but the redox peaks shift slightly due to polarization effects and slow transport of electrolyte/ions into the interior of the nanostructure. The result shows that the constructed ternary tungsten nickel cobalt telluride nano sheet mixed nano structure can remarkably improve electrochemical performance.
FIG. 8a is a schematic diagram of a CWNC-8 electrode at 10-100 mV s -1 The CV curve at the scanning rate shows that the CV curve has a pair of redox peaks, which indicate that Faraday redox reaction occurs in the energy storage process and has obvious pseudocapacitance characteristic. Notably, as the scan rate increases to 70mV s -1 The CV curve still maintains a pair of redox peaks without significant distortion, which means that the electrode has ideal electrochemical reversibility and excellent rate capability, and as the scan speed continues to increase, the redox peaks move toward a higher positive potential and a lower negative potential, respectively, again due to polarization effects and slow transport of electrolyte/ions into the electrode material. CWNC-8 electrode at different current densities (1-10A g -1 ) The GCD results of the test are shown in fig. 8 b. From the GCD curve, a clear plateau can be seen, which means that the CWNC-8 electrode material has pseudocapacitive behavior, belonging to the battery type electrode material, consistent with the CV curve results. At different current densities, the discharge curve and the corresponding charge curve of the CWNC-8 electrode are almost symmetrical, which indicates that the CWNC-8 electrode has good reversibility of the redox reaction. The specific capacitances of CWNC-6, CWNC-8, CWNC-10 and CC-Ni-Co electrodes were calculated from the GCD curves at different current densities, and the results are shown in FIG. 8 c. It can be seen from the figure that CWNC-8 has the highest specific capacitance, and that the CWNC-8 electrodes have a current density of 1, 2, 3, 5 and 10A g -1 The specific capacitances are 740, 662, 613, 558, 484 and F g, respectively -1 The specific capacitances of CWNC-6, CWNC-10 and CC-Ni-Co electrodes at the same current density are 431, 358, 336, 302, 259 and F g in this order -1 610, 548, 376, 393, 345F g-1 and 403, 372, 343, 300, 265F g -1 Indicating that under proper electrodeposition time, the multi-component CC-WTE 2 Construction of Ni-Co nanoplatelet electrode materials with higher conductivity and fasterThis can also be verified in EIS tests.
EIS was also used to study the electrochemical behavior of the electrode materials, and the Nyquist curves for the five electrodes are shown in fig. 8d, with the inset showing an enlarged view in the high frequency region. In general, the intersection on the real axis of the high frequency region represents the internal resistance (Rs) of the electrode, and the Rs values of the five electrodes are listed in table 1. As can be seen, in the high frequency region, the Rs of CWNC-8 and CWNC-10 were 0.398. OMEGA. And were the smallest in all samples, indicating the best conductivity, indicating CC-WTE at the electrode material construction 2 Is essential, the Rs value of CWNC-8 and CC-WO are the same 3-x (rs=1.35Ω) increased by a factor of 3.4. The high conductivity is beneficial to electron transfer and acceleration of reaction kinetics, and CC-WTE2, CWNC-8 and CC-Ni-Co all have larger Rs, which indicates that the contact resistance is larger.
TABLE 1
| Sample of | CC-WTe2 | CWNC-6 | CWNC-8 | CWNC-10 | CC-Ni-Co |
| Rs | 1.641 | 2.110 | 0.398 | 0.398 | 1.321 |
The analysis shows that the electrodeposition time has a great influence on the structure and morphology of the electrode material, and further has a great influence on the electrochemical performance. The optimal electrodeposition time was confirmed to give a CWNC-8 electrode with optimal electrochemical performance. The excellent electrochemical performance of the CWNC-8 electrode is derived from proper Ni-Co nano-sheets and CC-WTE 2 The CWNC-8 electrode has higher conductivity and exposes more electrochemical active sites under the optimal electrodeposition time, which is beneficial to ion diffusion and electron transfer.
The Energy Density (ED) and Power Density (PD) of CWNC-8 were further calculated from the calculated specific capacitance of the three electrode GCD test. FIG. 9a shows a Ragone plot of a CWNC-8 electrode at a current density of 1A g -1 And 10A g -1 The maximum energy density and the power density obtained were 35.75 Wh kg, respectively -1 (300W kg -1 ) And 3000W kg -1 (23.4W h kg -1 ). In the same case, however, CC-WO 3-x The maximum power density of the electrode is 2602W kg -1 At the time of energy density 19.4 Wh kg -1 Indicating that with CC-WO 3-x The CWNC-8 electrode still retains a higher energy density at a higher power density than the electrode.
FIGS. 9b and 9c show CWNC-8 and CC-Ni-Co electrodes, respectively, at 50mV s -1 The long cycle stability of the lower CV test shows that the CWNC-8 has good cycle performance, after 5000 times of cycle, the capacitance retention rate of the CWNC-8 electrode is 84%, and the CC-Ni-Co electrode only maintains 72%, which indicates that the CWNC-8 has more excellent cycle stability.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. The preparation method of the ternary nickel cobalt tungsten telluride composite is characterized by comprising the following steps of:
step one, tungsten oxide nano-sheets CC-WO with oxygen defects grown on carbon cloth 3-x Carrying out chemical reaction with tellurium powder under a hydrogen-argon mixed atmosphere and a certain temperature to obtain CC-WTE growing on carbon cloth 2 ；
Step two, the obtained CC-WTE 2 Electrochemical deposition in a three-electrode system to obtain CC-WTE 2 -a Ni-Co ternary composite wherein in a three electrode system the electrolyte is Ni (NO 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 O mixed solution, working electrode is CC-WTE 2 The reference electrode is an Ag/AgCl electrode, and the counter electrode is a Pt sheet electrode.
2. The method for preparing ternary nickel cobalt tungsten telluride composite according to claim 1, wherein in the first step, tungsten oxide nano-sheets CC-WO with oxygen defects grown on carbon cloth are grown 3-x WO on 3-x The mass ratio of the powder to tellurium powder is 3:40-60; the tellurium powder and CC-WO 3-x The distance of (2) is 1-3 cm.
3. The method for preparing ternary nickel cobalt tungsten telluride composite according to claim 1, wherein in the first step, chemical reaction is performed in a high temperature tube furnace, and the reaction temperature is: heating to 600-700 ℃ at a speed of 1-3 ℃/min, and preserving heat for 1-3 hours, wherein the volume fraction of Ar in the hydrogen-argon mixed atmosphere is 90%, H 2 Is 10% by volume.
4. The method for preparing ternary nickel cobalt tungsten telluride composite according to claim 1, wherein in the second step, ni (NO 3 ) 2 ·6H 2 O andCo(NO 3 ) 2 ·6H 2 o is dissolved in distilled water to form electrolyte, and is loaded with CC-WTE 2 Cutting carbon cloth into 1cm multiplied by 1cm, using Ag/AgCl electrode and Pt sheet electrode as reference electrode and counter electrode respectively, circulating for 5-15 circles in-1.2-0.2V at scanning rate of 3-8 mV/s, washing the obtained sample with deionized water and ethanol for 3-5 times, and drying in a vacuum drying oven at 50-70deg.C for 10-15 h to obtain CC-WTE 2 -a Ni-Co ternary composite.
5. The method of preparing a ternary nickel cobalt tungsten telluride composite as set forth in claim 4, wherein Ni (NO 3 ) 2 ·6H 2 O and Co (NO) 3 ) 2 ·6H 2 The mass ratio of O is 1:1; the Ni (NO) 3 ) 2 ·6H 2 The mass volume ratio of O to distilled water is 8mg to 5mL.
6. A ternary nickel cobalt tungsten telluride composite prepared by the method of any one of claims 1 to 5.
7. Use of a ternary nickel cobalt tungsten telluride composite prepared by the preparation method according to any one of claims 1-5 in an electrode material.
8. An electrochemical testing method of the ternary nickel cobalt tungsten telluride composite prepared by the preparation method according to any one of claims 1-5, wherein in a three-electrode system, the ternary nickel cobalt tungsten telluride composite is used as a working electrode, hg/HgO is used as a reference electrode, pt sheets are used as a counter electrode, 2M KOH is used as an electrolyte, and a CHI660E electrochemical workstation is used for testing the electrochemical performance of the ternary nickel cobalt tungsten telluride composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210666626.0A CN115101357B (en) | 2022-06-14 | 2022-06-14 | Preparation method and application of ternary nickel cobalt tungsten telluride composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210666626.0A CN115101357B (en) | 2022-06-14 | 2022-06-14 | Preparation method and application of ternary nickel cobalt tungsten telluride composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115101357A CN115101357A (en) | 2022-09-23 |
| CN115101357B true CN115101357B (en) | 2024-01-26 |
Family
ID=83291295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210666626.0A Active CN115101357B (en) | 2022-06-14 | 2022-06-14 | Preparation method and application of ternary nickel cobalt tungsten telluride composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115101357B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103650215A (en) * | 2011-07-11 | 2014-03-19 | 巴斯夫欧洲公司 | Electrode material comprising metal sulfide |
| AU2015246122A1 (en) * | 2010-03-18 | 2015-11-12 | Blacklight Power, Inc. | Electrochemical hydrogen-catalyst power system |
| CN108423642A (en) * | 2018-04-04 | 2018-08-21 | 南京邮电大学 | A kind of preparation method of small size Transition-metal dichalcogenide two-dimensional nano piece |
| CN108584888A (en) * | 2018-03-28 | 2018-09-28 | 湖南大学 | A kind of telluride vanadium two-dimensional material and its synthetic method and application |
| CN109298027A (en) * | 2017-07-25 | 2019-02-01 | 天津大学 | Gas sensor and preparation method thereof based on the nano-particle modified tungsten oxide nanometer stick of tellurium oxide |
| CN111437841A (en) * | 2020-05-15 | 2020-07-24 | 山西大学 | Tungsten telluride-tungsten boride heterojunction electrocatalyst and preparation method and application thereof |
| CN112142014A (en) * | 2020-08-25 | 2020-12-29 | 天津大学 | Preparation method of tungsten ditelluride nanosheets for electrocatalytic hydrogen evolution |
| CN113314350A (en) * | 2021-06-22 | 2021-08-27 | 重庆交通大学 | Ternary nickel-cobalt-iron double hydroxide electrode material, preparation method and supercapacitor |
-
2022
- 2022-06-14 CN CN202210666626.0A patent/CN115101357B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2015246122A1 (en) * | 2010-03-18 | 2015-11-12 | Blacklight Power, Inc. | Electrochemical hydrogen-catalyst power system |
| CN103650215A (en) * | 2011-07-11 | 2014-03-19 | 巴斯夫欧洲公司 | Electrode material comprising metal sulfide |
| CN109298027A (en) * | 2017-07-25 | 2019-02-01 | 天津大学 | Gas sensor and preparation method thereof based on the nano-particle modified tungsten oxide nanometer stick of tellurium oxide |
| CN108584888A (en) * | 2018-03-28 | 2018-09-28 | 湖南大学 | A kind of telluride vanadium two-dimensional material and its synthetic method and application |
| CN108423642A (en) * | 2018-04-04 | 2018-08-21 | 南京邮电大学 | A kind of preparation method of small size Transition-metal dichalcogenide two-dimensional nano piece |
| CN111437841A (en) * | 2020-05-15 | 2020-07-24 | 山西大学 | Tungsten telluride-tungsten boride heterojunction electrocatalyst and preparation method and application thereof |
| CN112142014A (en) * | 2020-08-25 | 2020-12-29 | 天津大学 | Preparation method of tungsten ditelluride nanosheets for electrocatalytic hydrogen evolution |
| CN113314350A (en) * | 2021-06-22 | 2021-08-27 | 重庆交通大学 | Ternary nickel-cobalt-iron double hydroxide electrode material, preparation method and supercapacitor |
Non-Patent Citations (1)
| Title |
|---|
| Synthesis of Oxygen-Deficient WO3-x Nanoplates and Hollow Microspheres Decorated on a Carbon Cloth for Supercapacitors;Han, WJ; Zhong, ML; Wang, CY；et al.;《| CHEMELECTROCHEM》;第第9卷卷(第第10期期);文献号e202200122 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115101357A (en) | 2022-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107359320B (en) | Nitrogen-doped porous carbon/MoS2Sodium ion battery negative electrode material and preparation method thereof | |
| Wang et al. | Coupling hierarchical iron cobalt selenide arrays with N-doped carbon as advanced anodes for sodium ion storage | |
| Huang et al. | Hierarchical NiFe 2 O 4/Fe 2 O 3 nanotubes derived from metal organic frameworks for superior lithium ion battery anodes | |
| CN111199835B (en) | Preparation method of nickel cobalt selenium/nickel cobalt double hydroxide composite electrode material with hierarchical structure | |
| Jiao et al. | 3D hollow NiCo LDH nanocages anchored on 3D CoO sea urchin-like microspheres: A novel 3D/3D structure for hybrid supercapacitor electrodes | |
| CN107400903B (en) | Three-dimensional nano porous copper modified foam nickel and preparation method and application thereof | |
| Wang et al. | recent advance in self-supported electrocatalysts for rechargeable Zinc-air batteries | |
| Sun et al. | Coaxial cable-like dual conductive channel strategy in polypyrrole coated perovskite lanthanum manganite for high-performance asymmetric supercapacitors | |
| Li et al. | Architecting Braided Porous Carbon Fibers Based on High‐Density Catalytic Crystal Planes to Achieve Highly Reversible Sodium‐Ion Storage | |
| Deng et al. | Carbon paper-supported NiCo/C–N catalysts synthesized by directly pyrolyzing NiCo-doped polyaniline for oxygen reduction reaction | |
| CN110739162B (en) | Preparation method of flexible supercapacitor positive electrode material | |
| Cui et al. | Roughening the surface of porous NiCoP rod-like arrays via the in situ growth of NiCoP 4 O 12 nanoislands enables highly efficient energy storage | |
| Ao et al. | CoSe2 nanoparticles-decorated carbon nanofibers as a hierarchical self-supported sulfur host for high-energy lithium-sulfur batteries | |
| Liu et al. | A novel Ni–La-Nd-Y flim on Ni foam to enhance hydrogen evolution reaction in alkaline media | |
| CN113584521B (en) | Branch-leaf type heterostructure full-hydrolysis catalyst and preparation method thereof | |
| Zhu et al. | Nanosheets-assembled hierarchical NiCo (CO3)(OH) 2 microspheres with superhydrophilicity and enhanced battery-supercapacitor properties | |
| CN117239102A (en) | Sodium ion battery positive electrode material, preparation method thereof and sodium ion battery | |
| CN115101357B (en) | Preparation method and application of ternary nickel cobalt tungsten telluride composite material | |
| Ye et al. | Fe induction strategy for hollow porous N-doped carbon with superior performance in oxygen reduction | |
| CN114583126B (en) | La (La) 2 O 3 Co/AB composite material and preparation method and application thereof | |
| CN113912023B (en) | Preparation method of negative electrode material of sodium ion battery | |
| CN115094456A (en) | Preparation method and application of cerium dioxide nano particle/nickel-iron bimetal phosphide/foamed nickel composite electrode | |
| CN114694975A (en) | Fe-Co-Ni-OH/rGO composite material and preparation method thereof | |
| CN113223871A (en) | Preparation and application of NiO/C composite electrode material with foam nickel sheet as substrate | |
| CN113903890B (en) | Integrated nano porous cobalt oxide/cobalt phosphide hybrid material, preparation and energy storage application |
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 |