CN106698951A - Niobium-silicon-based glass energy storage material with high energy storage density and preparation and application thereof - Google Patents
Niobium-silicon-based glass energy storage material with high energy storage density and preparation and application thereof Download PDFInfo
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- CN106698951A CN106698951A CN201611226047.5A CN201611226047A CN106698951A CN 106698951 A CN106698951 A CN 106698951A CN 201611226047 A CN201611226047 A CN 201611226047A CN 106698951 A CN106698951 A CN 106698951A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 99
- 239000011521 glass Substances 0.000 title claims abstract description 55
- 239000011232 storage material Substances 0.000 title claims abstract description 43
- LIZIAPBBPRPPLV-UHFFFAOYSA-N niobium silicon Chemical compound [Si].[Nb] LIZIAPBBPRPPLV-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 14
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 9
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 9
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical group [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910052784 alkaline earth metal Chemical group 0.000 claims abstract description 5
- 150000001342 alkaline earth metals Chemical group 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims abstract description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 4
- 150000001340 alkali metals Chemical group 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000010309 melting process Methods 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- -1 R2CO3 Chemical group 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000002241 glass-ceramic Substances 0.000 description 7
- 239000010955 niobium Substances 0.000 description 6
- 238000001237 Raman spectrum Methods 0.000 description 5
- 229910052758 niobium Inorganic materials 0.000 description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000006112 glass ceramic composition Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910020010 Nb—Si Inorganic materials 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000002583 cell-derived microparticle Anatomy 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001757 thermogravimetry curve Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/16—Compositions for glass with special properties for dielectric glass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to a niobium-silicon-based glass energy storage material with the high energy storage density and preparation and application thereof. Batching is conducted according to the mole ratio 25.6:6.4:32:36 of BaO to R(2)O to Nb2O5 to SiO2, wherein R is alkali metal or alkaline-earth metal; BaCO3, R2CO3, Nb2O5 and SiO2 are weighed, ball-milled and mixed to be uniform, high-temperature melting is conducted, and a high-temperature melt is obtained; after being clarified for a period time at constant temperature, the high-temperature melt is poured into a preheated metal mold, quenching molding and stress relief annealing are conducted, and then the niobium-silicon-based glass energy storage material with the high energy storage density is obtained; the obtained glass is cut into sheets with the thickness of 0.9-1.2 mm, grinding and polishing are conducted, and the obtained sheets can be applied to an energy storage capacitor material. Compared with the prior art, the preparation technology is simple, the complex aftertreatment step is not needed, the prepared glass energy storage material has the high dielectric constant of 17-23, the average breakdown-resistant field strength is 2,600-3,420 kV/cm, the energy storage density of the material is 6.7-11.1 J/cm<3>, and the material can be applied to the energy storage capacitor material.
Description
Technical field
The present invention relates to field of dielectric energy storage material, more particularly, to a kind of niobium silicon-based glass energy storage of high energy storage density
Material and its preparation and application.
Background technology
With the lasting consumption of fossil fuel and being continuously increased for energy demand, energy crisis is pressed hard step by step, develops new energy
Source receives much concern with energy storage.Energy storage all has demand, therefore performance to the energy storage density and utilization ratio of energy storage device
Excellent energy storage material and energy storage device turn into the emphasis of material science research.
Energy-storage capacitor is because its energy storage density is high, utilization rate is high, charge/discharge rates are fast, steady performance turns into normal
Accumulator component high, and as Pulse Power Techniques in main energy-storage travelling wave tube, be applied to hybrid vehicle, electricity
In the national defence such as magnetic railgun weapon, all-electric warship and modern industry field.And enter with the epoch with the development of science and technology
Step, realizes that miniaturization, lightness have turned into the demand of industrial development while energy storage high is maintained, thus high energy storage density electricity
Dielectric material arises at the historic moment.Energy storage density is relevant with the dielectric constant and breakdown strength of energy-accumulating medium, and discharging efficiency is to it
Loss has required, and recently, in many energy storage materials, linear energy storage material is close with power due to its energy storage density relatively high
Spend and receive much concern.
Chinese patent CN 105271761A disclose the niobate glass ceramics energy storage material and its system of high energy storage density
Standby and application, after formula dispensing, niobate glass pottery is obtained transparent niobates glass using high-temperature fusion-rapid cooling urgency technology
Glass；Then the niobate glass ceramics energy storage material of high energy storage density is prepared by controllable crystallization.It is prepared by Controlled Crystallization
Although glass ceramic material with dielectric constant higher, it punctures and is also greatly reduced, and optimal breakdown strength is
1020.47kV/cm, its maximum energy storage density is up to 5.67J/cm3, it is still relatively low.Due to the energy storage density meter of linear material
It is：W=1/2 ε0εrE2, energy storage density be proportional to breakdown strength square, therefore improve and puncture that can to obtain energy storage higher close
Degree.The pure glass energy storage material of the made niobium silicon substrate of this patent, with the dielectric constant higher compared with commercial glass, and more existing glass
The bigger breakdown strength of ceramic material, optimal breakdown strength substantially increases energy storage density up to 3417.8kV/cm, most preferably may be used
Up to 11.06J/cm3.In addition, glass energy storage material has more preferable machining property, be conducive to further processing and answer
With.
The content of the invention
The purpose of the present invention provides a kind of high energy storage density for the defect for overcoming above-mentioned prior art to exist
Niobium silicon-based glass energy storage material.
The purpose of the present invention can be achieved through the following technical solutions：
The niobium silicon-based glass energy storage material of high energy storage density, in molar ratio 25.6BaO-6.4R(2)O-32Nb2O5-36SiO2
Dispensing is carried out, described R is alkali metal or alkaline-earth metal.
Described alkali metal Li, Na, K or Na1/2K1/2。
Described alkaline-earth metal is Ba.
The glass network structure of the glass energy storage material is by [NbO6]-And [SiO4] group composition, network adjusting body is network
Alkaline-earth metal ions Ba in gap2+, and alkali metal ion Li+、Na+Or K+, free metal ion neutralization [NbO6]-Electricity price
Or combined with non-bridging oxygen.
The preparation method of the niobium silicon-based glass energy storage material of high energy storage density, using following steps：
(1) with BaCO3、R2CO3、Nb2O5And SiO2It is raw material, 25.6BaO-6.4R in molar ratio(2)O-32Nb2O5-
36SiO2Dispensing is carried out, wherein R is Ba, Li, Na, K or Na1/2K1/2；
(2) by the dispensing of step (1) after ball mill mixing, drying, and high-temperature fusion is carried out, high-temperature fusant is obtained；
(3) after by high-temperature fusant clarification a few hours obtained in step (2), it is poured into the metal die of preheating, destressing
Annealing, is obtained clear glass；
(4) glass-cutting obtained in step (3), into the glass flake that thickness is 0.9~1.2mm, is ground polishing,
Obtain final product niobium silicon-based glass energy storage material.
Each material purity is more than 99.95wt% in step (1).
Step (2) in mixing, after addition alcohol dampening raw material, dry by 20~30h of ball mill mixing, preferably 20~24h,
Compound is obtained final product, the process conditions of high-temperature fusion are：1~3h of high-temperature fusion at 1500~1600 DEG C.
Clarification condition is in step (3)：Constant temperature clarifies 1~3h at 1500~1600 DEG C, and the temperature of stress relief annealing is
550~650 DEG C, preferably 600~650 DEG C, the time is 4~7h, preferably 5h.
The niobium silicon-based glass energy storage material of high energy storage density can be in energy-storage capacitor application.
The present invention is based on 25.6BaO-6.4R(2)O-32Nb2O5-36SiO2(mol.%) dispensing, wherein R are Ba, Li, Na, K
Or Na1/2K1/2；With [NbO6]-Optimization [SiO4] glass network structure, and glass network ectosome is adjusted, gained glass is compared to business
Industry glass has dielectric constant higher, has considerable resistance to disruptive field intensity compared to existing glass ceramic material, the component
Proportioning has assumed that Nb all with [NbO6]-Structure and [SiO4] form glass network, R+With R2+Just its electric charge is neutralized, works as R
It is Na1/2K1/2When, resistance to disruptive field intensity is optimal value 3417.8kV/cm, and theoretical energy storage density reaches higher value for 11.06J/
cm3。
Compared with prior art, the invention has the characteristics that：
1) easily, preparation method is simple for raw material sources, economic and practical without complicated post-processing step；
2) system is simple, and with excellent resistance to sparking energy, good temperature stability, energy storage density is higher；
3) the niobium silicon-based glass energy storage material obtained by has good machining property, is easy to post-production application.
Brief description of the drawings
Fig. 1 is the X-ray diffraction analysis figure (XRD) of Ba-Na-Nb-Si glass energy storage material obtained in embodiment 3；
Fig. 2 is the Raman spectrograms of niobium silicon-based glass energy storage material obtained in embodiment 1~5；
Fig. 3 is the dielectric thermogram of niobium silicon-based glass energy storage material obtained in embodiment 1~5；
Fig. 4 is the dielectric loss figure of niobium silicon-based glass energy storage material obtained in embodiment 1~5；
Fig. 5 is the Weibull distribution maps of the resistance to disruptive field intensity of niobium silicon-based glass energy storage material obtained in embodiment 1~5；
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.Following examples will be helpful to this area
Technical staff further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the general of this area
For logical technical staff, without departing from the inventive concept of the premise, various modifications and improvements can be made.These are belonged to
Protection scope of the present invention.
The abbreviation for being used throughout the specification has following implications, unless clearly indicated otherwise in text：DEG C=Celsius
Degree, kV=kilovolts, cm=centimetres；Mol=moles, h=hours；Min=minutes, mol%=molar percentages.Various raw materials
Commercial supplier is purchased from reagent, without being further purified, unless otherwise indicated.The raw material and reagent of moisture-sensitive are deposited in
In hermetically sealed bottle, and directly use, without specially treated.
Embodiment 1
(1) BaCO with purity more than 99.95wt%3、Nb2O5And SiO2It is feed proportioning, moles the hundred of above-mentioned each component
After point than being 32%, 32% and 36%, plus alcohol dampening and ball mill mixing 24h, drying, in 1520 DEG C of high temperature melting 3h；
(2) high-temperature fusant for obtaining step (1) is poured into metal die after clarifying 2h at 1520 DEG C, in 600 DEG C of temperature
Degree stress relief annealing 5h, is obtained the niobium silica based glass ceramics energy storage material of high energy storage density；
(3) it is the glass flake of 0.9mm glass-cutting obtained in step (2) to be obtained into thickness.
The Raman spectrum of the sample obtained by the present embodiment are as shown in Fig. 2 dielectric properties are as shown in figure 3, pressure-resistant performance is surveyed
Examination is as shown in figure 4, energy storage density is as shown in table 1.
Embodiment 2
(1) BaCO with purity more than 99.95wt%3、Li2CO3、Nb2O5And SiO2It is feed proportioning, above-mentioned each component
Molar percentage is 25.6%, 6.4%, 32% and 36%, after ball mill mixing 24h, drying, in 1500 DEG C of high temperature melting 3h；
(2) high-temperature fusant for obtaining step (1) is poured into metal die after clarifying 2h at 1500 DEG C, in 600 DEG C of temperature
Degree stress relief annealing 5h, is obtained the niobium silica based glass ceramics energy storage material of high energy storage density；
(3) it is the glass flake of 0.9mm glass-cutting obtained in step (2) to be obtained into thickness.
The Raman spectrum of the sample obtained by the present embodiment are as shown in Fig. 2 dielectric properties are as shown in figure 3, pressure-resistant performance is surveyed
Examination is as shown in figure 4, energy storage density is as shown in table 1.
Embodiment 3
(1) BaCO with purity more than 99.95wt%3、Na2CO3、Nb2O5And SiO2It is feed proportioning, above-mentioned each component
Molar percentage is 25.6%, 6.4%, 32% and 36%, after ball mill mixing 24h, drying, in 1520 DEG C of high temperature melting 3h；
(2) high-temperature fusant for obtaining step (1) is poured into metal die after clarifying 2h at 1520 DEG C, in 600 DEG C of temperature
Degree stress relief annealing 5h, is obtained the niobium silica based glass ceramics energy storage material of high energy storage density；
(3) it is the glass flake of 0.9mm glass-cutting obtained in step (2) to be obtained into thickness.
The XRD of the sample obtained by the present embodiment is as shown in figure 1, Raman spectrum are as shown in Fig. 2 dielectric properties such as Fig. 3 institutes
Show, pressure-resistant performance test is as shown in figure 4, energy storage density is as shown in table 1.
Embodiment 4
(1) BaCO with purity more than 99.95wt%3、K2CO3、Nb2O5And SiO2It is feed proportioning, above-mentioned each component
Molar percentage is 25.6%, 6.4%, 32% and 36%, after ball mill mixing 24h, drying, in 1520 DEG C of high temperature melting 3h；
(2) high-temperature fusant for obtaining step (1) is poured into metal die after clarifying 2h at 1520 DEG C, in 600 DEG C of temperature
Degree stress relief annealing 5h, is obtained the niobium silica based glass ceramics energy storage material of high energy storage density；
(3) it is the glass flake of 0.9mm glass-cutting obtained in step (2) to be obtained into thickness.
The Raman spectrum of the sample obtained by the present embodiment are as shown in Fig. 2 dielectric properties are as shown in figure 3, pressure-resistant performance is surveyed
Examination is as shown in figure 4, energy storage density is as shown in table 1.
Embodiment 5
(1) BaCO with purity more than 99.95wt%3、Na2CO3、K2CO3、Nb2O5And SiO2It is feed proportioning, it is above-mentioned each
The molar percentage of component is 25.6%, 3.2%, 3.2%, 32% and 36%, after ball mill mixing 24h, drying, at 1520 DEG C
High temperature melting 3h；
(2) high-temperature fusant for obtaining step (1) is poured into metal die after clarifying 2h at 1520 DEG C, in 600 DEG C of temperature
Degree stress relief annealing 5h, is obtained the niobium silica based glass ceramics energy storage material of high energy storage density；
(3) it is the glass flake of 0.9mm glass-cutting obtained in step (2) to be obtained into thickness.
The Raman spectrum of the sample obtained by the present embodiment are as shown in Fig. 2 dielectric properties are as shown in figure 3, pressure-resistant performance is surveyed
Examination is as shown in figure 4, energy storage density is as shown in table 1.
Niobium silicon-based glass energy storage material obtained in above-described embodiment 1~5 is detected, its specific performance such as table 1 below institute
Show.
Table 1
In Fig. 2,187cm-1、266cm-1、659cm-1And 837cm-1The characteristic peak at place represents [NbO in glass network6]-
Presence, 462cm-1With 1095cm-1The characteristic peak at place represents [SiO in glass network4] presence.
In Fig. 3, the dielectric constant with temperature rising of each embodiment is slightly in rising trend, without mutation or relaxation phenomena, body
Reveal preferable temperature stability.
In Fig. 4, tan δ are dielectric loss, and each embodiment all has the less advantage of dielectric loss, and varies with temperature less,
Show preferable temperature stability.
In Fig. 5, EiIt is i-th resistance to disruptive field intensity of test sample, n is the summation of resistance to breakdown field intensity values, EbIt is to pass through
The average resistance to disruptive field intensity that Weibull distributions are obtained.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow
Sound substance of the invention.
Claims (10)
1. the niobium silicon-based glass energy storage material of high energy storage density, it is characterised in that energy storage material 25.6BaO- in molar ratio
6.4R(2)O-32Nb2O5-36SiO2Dispensing is carried out, described R is alkali metal or alkaline-earth metal.
2. the niobium silicon-based glass energy storage material of high energy storage density according to claim 1, it is characterised in that described alkali gold
Category Li, Na, K or Na1/2K1/2。
3. the niobium silicon-based glass energy storage material of high energy storage density according to claim 1, it is characterised in that described alkaline earth
Metal is Ba.
4. the preparation method of the niobium silicon-based glass energy storage material of high energy storage density as claimed in claim 1, it is characterised in that should
Method uses following steps：
(1) with BaCO3、R2CO3、Nb2O5And SiO2It is raw material, 25.6BaO-6.4R in molar ratio(2)O-32Nb2O5-36SiO2Enter
Row dispensing, wherein R are Ba, Li, Na, K or Na1/2K1/2；
(2) by the dispensing of step (1) after ball mill mixing, drying, and high-temperature fusion is carried out, high-temperature fusant is obtained；
(3) after by high-temperature fusant clarification a few hours obtained in step (2), it is poured into the metal die of preheating, stress relief annealing,
Clear glass is obtained；
(4) glass-cutting obtained in step (3), into the glass flake that thickness is 0.9~1.2mm, is ground polishing, is obtained final product
Niobium silicon-based glass energy storage material.
5. the preparation method of the niobium silicon-based glass energy storage material of high energy storage density according to claim 4, it is characterised in that
Each material purity is more than 99.95wt% in step (1).
6. the preparation method of the niobium silicon-based glass energy storage material of high energy storage density according to claim 4, it is characterised in that
Step (2) mixing when, addition alcohol dampening raw material after, 20~30h of ball mill mixing, preferably 20~24h.
7. the preparation method of the niobium silicon-based glass energy storage material of high energy storage density according to claim 4, it is characterised in that
Step (2) high temperature melting process conditions be：1~3h of high-temperature fusion at 1500~1600 DEG C.
8. the preparation method of the niobium silicon-based glass energy storage material of high energy storage density according to claim 4, it is characterised in that
Clarification condition is in step (3)：Constant temperature clarifies 1~3h at 1500~1600 DEG C.
9. the preparation method of the niobium silicon-based glass energy storage material of high energy storage density according to claim 4, it is characterised in that
The temperature of stress relief annealing is 550~650 DEG C in step (3), and preferably 600~650 DEG C, the time is 4~7h, preferably 5h.
10. application of the niobium silicon-based glass energy storage material of high energy storage density as claimed in claim 1 in energy-storage capacitor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110451807A (en) * | 2019-07-29 | 2019-11-15 | 同济大学 | The bismuth niobate barium sodium base glass ceramic material of high energy storage density and its preparation and application |
| CN110451807B (en) * | 2019-07-29 | 2022-04-05 | 同济大学 | Bismuth barium sodium niobate-based glass ceramic material with high energy storage density and preparation and application thereof |
| CN114014330A (en) * | 2021-11-03 | 2022-02-08 | 蚌埠学院 | Energy storage electrode material K3Nb3Si2O13Preparation method and application of |
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