CN107910199A - A kind of super capacitor anode material with fake capacitance characteristic and preparation method thereof - Google Patents
A kind of super capacitor anode material with fake capacitance characteristic and preparation method thereof Download PDFInfo
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- CN107910199A CN107910199A CN201710948074.1A CN201710948074A CN107910199A CN 107910199 A CN107910199 A CN 107910199A CN 201710948074 A CN201710948074 A CN 201710948074A CN 107910199 A CN107910199 A CN 107910199A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- 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
- Y02E60/13—Energy storage using capacitors
Abstract
The invention discloses a kind of negative material of ultracapacitor, and the preparation method of this kind of material, it is using cetyl trimethylammonium bromide as template, using ammonium metavanadate as vanadium source, spherical porous vanadium oxide is prepared by the step of thermal spray drying and high-temperature roasting, spherical porous vanadium nitride is then prepared by the reduction of high temperature ammonolysis.It has abundant meso-hole structure and higher specific surface area, and there is Faraday pseudo-capacitance characteristic in alkaline electrolyte, it is compared with traditional activated carbon negative electrode material, specific capacitance higher, and there is good high rate performance, extensive, industrialization production can be smoothly realized at the same time, therefore is expected to substitution activated carbon to become a kind of new super capacitor anode material.
Description
Technical field
It is particularly a kind of super with fake capacitance characteristic the present invention relates to a kind of electrode material for super capacitor technical field
Level capacitor anode material, while also disclose the preparation method of this kind of material.
Background technology
Ultracapacitor is a kind of novel energy-storing higher than traditional capacitor energy density, bigger than secondary cell power density
Device.It has the advantages that charge/discharge rates it is fast, it is efficient, have extended cycle life, operating temperature range is wide, safe, nowadays,
Ultracapacitor is widely used in fields such as electric automobile, weaponry, aerospace and power energy storages.
The ratio energy of ultracapacitor is equal to 1/2CV 2 , whereinCFor the total specific capacitance of positive and negative anodes electrode material,VTo be positive and negative
Polar body system operating voltage range, only positive and negative electrode electrode material are respectively provided with higher specific capacitance, and when operating voltage range is larger
High-energy-density could be obtained.In recent years, more and more high specific capacitance materials had been used to the electrode material of ultracapacitor,
Such as the specific capacitance of the material such as NiO xerogel, NiO/CNTA and PANI/CNTA is above 700 F/g, but these oxide materials
Expect that operating potential in 0 more than V, is suitable only for making cathode.It is successfully prepared successively with the positive electrode of a variety of high specific capacitances
Situation on the contrary, lack the negative material of high specific capacitance at present.The highest negative material of specific capacitance is activated carbon, but its specific capacitance is most
Height is only 400 F/g, and far below the specific capacitance of high performance positive electrode, and activated carbon density is low, causes electrode volume specific volume
Measure relatively low, seriously constrain raising of the ultracapacitor than energy.
Compared with metal oxide, transition metal nitride has unique performance, such as mechanical strength is big, fusing point is high,
High selection catalytic, good electronic conductivity etc..In recent years, vanadium nitride had been ground as super capacitor anode material
Study carefully and report.The oxide valence state (II-V) that its good electronic conductivity and vanadium metal enrich is it as super capacitor electrode
Quick discharge and recharge occurs for pole material and oxidation-reduction reaction provides advantage.Choi uses two step ammonification legal system of low temperature
Standby nanocrystal vanadium nitride, the results show material as super capacitor anode material have good chemical property with
Outstanding high rate performance (Advance Materials 18 (2006) 1178-1182).But its preparation process is complicated, experiment
Condition requires harsh, industrialization difficult to realize.
The content of the invention
The present invention is to solve the above-mentioned deficiency present in the prior art, proposes that one kind has method in alkaline electrolyte
Fake capacitance characteristic is drawn, the negative material of traditional absorbent charcoal material can be replaced, while also proposed this kind of negative material
Preparation method.
The present invention technical solution be：A kind of super capacitor anode material with fake capacitance characteristic, its feature
It is：The material is made in accordance with the following methods：Using cetyl trimethylammonium bromide as template, using ammonium metavanadate as vanadium
Source, spherical porous vanadium oxide is prepared by thermal spray drying and high-temperature roasting, is then prepared into by the reduction of high temperature ammonolysis
To spherical porous vanadium nitride, the nitride porous vanadium is negative material.
A kind of preparation method of the super capacitor anode material as described above with fake capacitance characteristic, its feature exist
In：The method carries out successively according to following steps：
A. cetyl trimethylammonium bromide is dissolved in absolute ethyl alcohol first, stirring makes cetyl trimethylammonium bromide complete
Dissolve and a certain amount of deionized water is added in backward absolute ethyl alcohol, be uniformly mixed；The cetyl trimethylammonium bromide
Molal weight and the volume ratio of absolute ethyl alcohol are 1:10 to 1:120, and the absolute ethyl alcohol and the volume ratio of deionized water are
1:2 to 5:1,
B. a certain amount of oxalic acid is added into the solution of a steps, stirring is completely dissolved oxalic acid, then adds ammonium metavanadate, hold
Continuous stirring 1-8h, until solution colour is changed into yellow, the ammonium metavanadate rubs with cetyl trimethylammonium bromide in a steps
Your mass ratio is 10:1 to 1:1, and the molal weight of the oxalic acid and ammonium metavanadate ratio is 1：1 to 5：1,
C. processing is dried to the solution obtained in b step using spray dryer, obtains solid,
D. the solid obtained in step c is put into tube furnace, carries out high-temperature roasting processing in atmosphere, obtain spherical porous
Vanadium oxide presoma,
E. the spherical porous vanadium oxide presoma obtained in Step d is put into tube furnace, and NH is passed through into tube furnace3, allow
The two carries out high temperature ammonolysis reduction reaction, is cooled to room temperature after reaction, obtains spherical porous vanadium nitride.
In the step c, spray dryer is LD-117 test-type spray dryers.
In the step c, the temperature of drying process is 100-180 DEG C.
In the Step d, the temperature of high-temperature roasting is 250-500 DEG C, and the time of high-temperature roasting is 0.5-3h.
In the step e, the temperature of the high temperature ammonolysis reduction reaction is 400-900 DEG C, reaction time 2-14h.
The present invention compared with the existing technology, has the following advantages that：
The negative material of the ultracapacitor prepared using presently disclosed method, using cetyl trimethylammonium bromide as mould
Plate agent, using ammonium metavanadate as vanadium source, is prepared spherical porous vanadium oxide, so by the step of thermal spray drying and high-temperature roasting
Spherical porous vanadium nitride is prepared by the reduction of high temperature ammonolysis afterwards.It has abundant meso-hole structure and higher ratio surface
Product, and there is Faraday pseudo-capacitance characteristic in alkaline electrolyte, it is compared with traditional activated carbon negative electrode material, specific capacitance
Higher, and there is good high rate performance, while can smoothly realize extensive, industrialization production, therefore it is expected to substitution activity
Charcoal becomes a kind of new super capacitor anode material.
Brief description of the drawings
Fig. 1 is the SEM pictures of negative material of the present invention.
Fig. 2 is the XRD diffraction spectrograms of negative material of the present invention.
Fig. 3 is cyclic voltammetry curve of the negative material of the present invention in 1 mol/L potassium hydroxide electrolytes.
Fig. 4 is constant current charge-discharge curve of the negative material of the present invention in 1 mol/L potassium hydroxide electrolytes.
Embodiment
The embodiment of the present invention is described below.
A kind of super capacitor anode material with fake capacitance characteristic, is made in accordance with the following methods：With cetyl three
Methyl bromide ammonium is template, using ammonium metavanadate as vanadium source, is prepared by thermal spray drying and high-temperature roasting spherical porous
Vanadium oxide, is then prepared spherical porous vanadium nitride, the nitride porous vanadium is anode material by the reduction of high temperature ammonolysis
Material.
Specifically, the above-mentioned super capacitor anode material with fake capacitance characteristic carries out successively according to following steps：
Cetyl trimethylammonium bromide is dissolved in absolute ethyl alcohol first, stirring makes cetyl trimethylammonium bromide completely molten
Solve and a certain amount of deionized water is added in backward absolute ethyl alcohol, be uniformly mixed；The cetyl trimethylammonium bromide rubs
That quality and the volume ratio of absolute ethyl alcohol are 1:10 to 1:120, and the absolute ethyl alcohol and the volume ratio of deionized water are 1:2
To 5:1,
A certain amount of oxalic acid is added in rapid solution one step up, stirring is completely dissolved oxalic acid, then adds ammonium metavanadate, hold
Continuous stirring 1-8h, until solution colour is changed into yellow, the molal weight of the ammonium metavanadate and cetyl trimethylammonium bromide
Than for 10:1 to 1:1, and the molal weight of the oxalic acid and ammonium metavanadate ratio is 1：1 to 5：1,
Then processing is dried to above-mentioned solution using spray dryer, obtains solid, spray dryer here is optional
With LD-117 test-type spray dryers, and the temperature of drying process is 100-180 DEG C,
Obtained solid is put into tube furnace, carries out high-temperature roasting processing in atmosphere, the temperature of high-temperature roasting is 250-
500 DEG C, the time of high-temperature roasting is 0.5-3h, obtains spherical porous vanadium oxide presoma,
Spherical porous vanadium oxide presoma is put into tube furnace, and NH is passed through into tube furnace3, allow the two to carry out high temperature ammonolysis
Reduction reaction, the temperature of high temperature ammonolysis reduction reaction is 400-900 DEG C, and reaction time 2-14h, is cooled to room after reaction
Temperature, obtains spherical porous vanadium nitride.
Embodiment 1
Weigh 1.4578 g cetyl trimethylammonium bromides to be dissolved in 100 mL absolute ethyl alcohols, stirring makes it completely molten
Solution, then adds 100 mL deionized waters, adds the oxalic acid of 5.0428 g after mixing, be completely dissolved it.Weigh 2.34
G ammonium metavanadates are slowly added into above-mentioned solution, and lasting stirring, passes through LD-117 test-type spray dryers by above-mentioned solution
It is spray-dried, obtains pale yellow gray solid, then obtained solid is put into tube furnace in 300 DEG C of air and is heat-treated 1
H, obtains porous oxidation vanadium presoma.Obtained porous oxidation vanadium presoma is put into tube furnace 500 DEG C and NH3Reaction 12
H, is naturally cooling to room temperature after the completion of reaction, product is taken out, and obtains spherical porous vanadium nitride.
SEM tests show that product manufactured in the present embodiment is spherical porous vanadium nitride, as shown in Figure 1.Will be above-mentioned spherical more
Hole vanadium nitride presses active material:Conductive agent:Binding agent=75:15:10 ratio is prepared into electrode slice after being mixed, in 1 M
Cyclic voltammetry is carried out in KOH electrolyte, test result is as shown in figure 3, spherical porous vanadium nitride electricity manufactured in the present embodiment
Pole cyclic voltammetry curve under the sweep speed of 2 mV/s occurs near -0.57V, -0.65V and -0.23V, -0.32V
Two pairs of redox peaks, illustrate that the electrode, there occurs reversible oxidation-reduction reaction, there is pseudo capacitive in charge and discharge process
Energy.Specific capacitance under 2 mV/s sweep speeds can reach 593 F/g, and when sweep speed increases to 10 mV/s, specific capacity is still
So there are 382 F/g.
Embodiment 2
Weigh 1.2148 g cetyl trimethylammonium bromides to be dissolved in 80 mL absolute ethyl alcohols, stirring makes it completely molten
Solution, then adds 120 mL deionized waters, adds the oxalic acid of 5.0428 g after mixing, be completely dissolved it.Weigh 2.34
G ammonium metavanadates are slowly added into above-mentioned solution, and lasting stirring, passes through LD-117 test-type spray dryers by above-mentioned solution
It is spray-dried, obtains pale yellow gray solid, then obtained solid is put into tube furnace in 400 DEG C of air and is heat-treated 1
H, obtains vanadium oxide presoma.Obtained vanadium oxide presoma is put into tube furnace 500 DEG C and NH312 h are reacted, have been reacted
Room temperature is naturally cooling to after, product is taken out, obtains spherical porous vanadium nitride.
XRD tests show product manufactured in the present embodiment as the higher spherical porous vanadium nitride of crystallinity, as shown in Figure 2.
Above-mentioned spherical porous vanadium nitride is pressed into active material:Conductive agent:Binding agent=75:15:10 ratio is prepared into electricity after being mixed
Pole piece, cyclic voltammetry is carried out in 1 M KOH electrolyte, and test result is shown, spherical porous nitrogen manufactured in the present embodiment
Change vanadium electrode under the sweep speed of 2 mV/s cyclic voltammetry curve near -0.57V, -0.65V and -0.23V, -0.32V
There are two pairs of redox peaks, illustrate that the electrode, there occurs reversible oxidation-reduction reaction, there is quasi- electricity in charge and discharge process
Capacitive energy.
Embodiment 3
Weigh 2.4297 g cetyl trimethylammonium bromides to be dissolved in 120 mL absolute ethyl alcohols, stirring makes it completely molten
Solution, then adds 80 mL deionized waters, adds the oxalic acid of 5.6732 g after mixing, be completely dissolved it.Weigh 2.34 g
Ammonium metavanadate is slowly added into above-mentioned solution, lasting stirring, by above-mentioned solution by LD-117 test-types spray dryer into
Row spray drying, obtains pale yellow gray solid, then obtained solid is put into tube furnace in 350 DEG C of air and is heat-treated 1 h,
Obtain vanadium oxide presoma.Obtained vanadium oxide presoma is put into tube furnace 600 DEG C and NH38 h are reacted, after the completion of reaction
Room temperature is naturally cooling to, product is taken out, obtains spherical porous vanadium nitride.
Above-mentioned spherical porous vanadium nitride is pressed into active material:Conductive agent:Binding agent=75:15:After 10 ratio is mixed
Electrode slice is prepared into, carries out cyclic voltammetry in 1 M KOH electrolyte, test result is shown, ball manufactured in the present embodiment
Shape nitride porous vanadium electrode under the sweep speed of 2 mV/s cyclic voltammetry curve -0.57V, -0.65V and -0.23V, -
Nearby there are two pairs of redox peaks in 0.32V, and illustrating the electrode, there occurs reversible oxidationreduction in charge and discharge process
Reaction, there is pseudo capacitive energy.Charge-discharge performance test, discharge and recharge time and potential change are carried out under 100 mA/g current densities
Relatively good linear relationship is presented, as the increase of appearance property is presented in the extension voltage of discharge and recharge time or reduces, does not occur bright
Aobvious charge and discharge platform, illustrates that spherical porous vanadium nitride manufactured in the present embodiment has good electric double layer capacitance characteristic, and
With the increase of current density, its shape remains to be kept as very well.When current density is 100 mA/g, its specific capacitance is 513
F/g, as shown in Figure 4.
Embodiment 4
Weigh 1.8222 g cetyl trimethylammonium bromides to be dissolved in 100 mL absolute ethyl alcohols, stirring makes it completely molten
Solution, then adds 100 mL deionized waters, adds the oxalic acid of 5.0428 g after mixing, be completely dissolved it.Weigh 2.34
G ammonium metavanadates are slowly added into above-mentioned solution, and lasting stirring, passes through LD-117 test-type spray dryers by above-mentioned solution
It is spray-dried, obtains pale yellow gray solid, then obtained solid is put into tube furnace in 300 DEG C of air and is heat-treated 3
H, obtains vanadium oxide presoma.Obtained vanadium oxide presoma is put into tube furnace 700 DEG C and NH310 h are reacted, have been reacted
Room temperature is naturally cooling to after, product is taken out, obtains spherical porous vanadium nitride.
Above-mentioned spherical porous vanadium nitride is pressed into active material:Conductive agent:Binding agent=75:15:After 10 ratio is mixed
Electrode slice is prepared into, carries out cyclic voltammetry in 1 M KOH electrolyte, test result is shown, ball manufactured in the present embodiment
Shape nitride porous vanadium electrode under the sweep speed of 2 mV/s cyclic voltammetry curve -0.57V, -0.65V and -0.23V, -
Nearby there are two pairs of redox peaks in 0.32V, and illustrating the electrode, there occurs reversible oxidationreduction in charge and discharge process
Reaction, there is pseudo capacitive energy.
Embodiment 5
Weigh 3.6445 g cetyl trimethylammonium bromides to be dissolved in 150 mL absolute ethyl alcohols, stirring makes it completely molten
Solution, then adds 50 mL deionized waters, adds the oxalic acid of 5.0428 g after mixing, be completely dissolved it.Weigh 2.34 g
Ammonium metavanadate is slowly added into above-mentioned solution, lasting stirring, by above-mentioned solution by LD-117 test-types spray dryer into
Row spray drying, obtains pale yellow gray solid, then obtained solid is put into tube furnace in 400 DEG C of air and is heat-treated 3 h,
Obtain vanadium oxide presoma.Obtained vanadium oxide presoma is put into tube furnace 500 DEG C and NH312 h are reacted, reaction is completed
After be naturally cooling to room temperature, product is taken out, obtains spherical porous vanadium nitride.
Above-mentioned spherical porous vanadium nitride is pressed into active material:Conductive agent:Binding agent=75:15:After 10 ratio is mixed
Electrode slice is prepared into, carries out cyclic voltammetry in 1 M KOH electrolyte, test result is shown, ball manufactured in the present embodiment
Shape nitride porous vanadium electrode under the sweep speed of 2 mV/s cyclic voltammetry curve -0.57V, -0.65V and -0.23V, -
Nearby there are two pairs of redox peaks in 0.32V, and illustrating the electrode, there occurs reversible oxidationreduction in charge and discharge process
Reaction, there is pseudo capacitive energy.
Above example illustrates, can be prepared with the spherical of abundant meso-hole structure using method provided by the present invention
Nitride porous vanadium material.The material has Faraday pseudo-capacitance characteristic in alkaline electrolyte, is expected to replace traditional activated carbon
Negative material of the material as ultracapacitor, and there is higher specific capacitance and good high rate performance.
Claims (6)
- A kind of 1. super capacitor anode material with fake capacitance characteristic, it is characterised in that：The material is according to lower section Method is made：Using cetyl trimethylammonium bromide as template, using ammonium metavanadate as vanadium source, roasted by thermal spray drying and high temperature Spherical porous vanadium oxide is prepared in burning, spherical porous vanadium nitride then is prepared by the reduction of high temperature ammonolysis, described is more Hole vanadium nitride is negative material.
- 2. a kind of preparation method of the super capacitor anode material as claimed in claim 1 with fake capacitance characteristic, it is special Sign is：The method carries out successively according to following steps：A. cetyl trimethylammonium bromide is dissolved in absolute ethyl alcohol first, stirring makes cetyl trimethylammonium bromide complete Dissolve and a certain amount of deionized water is added in backward absolute ethyl alcohol, be uniformly mixed；The cetyl trimethylammonium bromide Molal weight and the volume ratio of absolute ethyl alcohol are 1:10 to 1:120, and the absolute ethyl alcohol and the volume ratio of deionized water are 1:2 to 5:1,B. a certain amount of oxalic acid is added into the solution of a steps, stirring is completely dissolved oxalic acid, then adds ammonium metavanadate, hold Continuous stirring 1-8h, until solution colour is changed into yellow, the ammonium metavanadate rubs with cetyl trimethylammonium bromide in a steps Your mass ratio is 10:1 to 1:1, and the molal weight of the oxalic acid and ammonium metavanadate ratio is 1：1 to 5：1,C. processing is dried to the solution obtained in b step using spray dryer, obtains solid,D. the solid obtained in step c is put into tube furnace, carries out high-temperature roasting processing in atmosphere, obtain spherical porous Vanadium oxide presoma,E. the spherical porous vanadium oxide presoma obtained in Step d is put into tube furnace, and NH is passed through into tube furnace3, allow two Person carries out high temperature ammonolysis reduction reaction, is cooled to room temperature after reaction, obtains spherical porous vanadium nitride.
- 3. the preparation method of the super capacitor anode material according to claim 2 with fake capacitance characteristic, its feature It is：In the step c, spray dryer is LD-117 test-type spray dryers.
- 4. the preparation method of the super capacitor anode material according to claim 2 with fake capacitance characteristic, its feature It is：In the step c, the temperature of drying process is 100-180 DEG C.
- 5. the preparation method of the super capacitor anode material according to claim 2 with fake capacitance characteristic, its feature It is：In the Step d, the temperature of high-temperature roasting is 250-500 DEG C, and the time of high-temperature roasting is 0.5-3h.
- 6. the preparation method of the super capacitor anode material according to claim 2 with fake capacitance characteristic, its feature It is：In the step e, the temperature of the high temperature ammonolysis reduction reaction is 400-900 DEG C, reaction time 2-14h.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828199A (en) * | 2019-11-13 | 2020-02-21 | 大连海洋大学 | Preparation method, product and application of vanadium-based nano composite electrode material |
| CN112233910A (en) * | 2020-10-19 | 2021-01-15 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of nano vanadium dioxide/natural porous carbon electrode material |
| CN114044538A (en) * | 2021-10-25 | 2022-02-15 | 西安理工大学 | M-phase VO with surface mesoporous structure and core-shell structure2Preparation method of (1) |
| CN114068971A (en) * | 2021-11-23 | 2022-02-18 | 成都先进金属材料产业技术研究院股份有限公司 | Electrode for vanadium cell and vanadium cell |
| CN114220947A (en) * | 2021-12-09 | 2022-03-22 | 厦门大学 | Lithium metal battery cathode, current collector, preparation method of current collector and battery |
| CN115536074A (en) * | 2022-09-21 | 2022-12-30 | 成都理工大学 | Method for preparing supercapacitor electrode material from vanadium titano-magnetite tailings |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828199A (en) * | 2019-11-13 | 2020-02-21 | 大连海洋大学 | Preparation method, product and application of vanadium-based nano composite electrode material |
| CN112233910A (en) * | 2020-10-19 | 2021-01-15 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of nano vanadium dioxide/natural porous carbon electrode material |
| CN114044538A (en) * | 2021-10-25 | 2022-02-15 | 西安理工大学 | M-phase VO with surface mesoporous structure and core-shell structure2Preparation method of (1) |
| CN114044538B (en) * | 2021-10-25 | 2024-03-12 | 西安理工大学 | Core-shell structure M-phase VO with surface mesoporous structure 2 Is prepared by the preparation method of (2) |
| CN114068971A (en) * | 2021-11-23 | 2022-02-18 | 成都先进金属材料产业技术研究院股份有限公司 | Electrode for vanadium cell and vanadium cell |
| CN114068971B (en) * | 2021-11-23 | 2023-10-27 | 成都先进金属材料产业技术研究院股份有限公司 | Electrode for vanadium battery and vanadium battery |
| CN114220947A (en) * | 2021-12-09 | 2022-03-22 | 厦门大学 | Lithium metal battery cathode, current collector, preparation method of current collector and battery |
| CN114220947B (en) * | 2021-12-09 | 2024-04-02 | 厦门大学 | Lithium metal battery negative electrode, current collector, preparation method of current collector and battery |
| CN115536074A (en) * | 2022-09-21 | 2022-12-30 | 成都理工大学 | Method for preparing supercapacitor electrode material from vanadium titano-magnetite tailings |
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Application publication date: 20180413 |