CN106630642B - A kind of barium strontium niobate sodium base glass ceramics energy storage material and the preparation method and application thereof - Google Patents

A kind of barium strontium niobate sodium base glass ceramics energy storage material and the preparation method and application thereof Download PDF

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CN106630642B
CN106630642B CN201610843365.XA CN201610843365A CN106630642B CN 106630642 B CN106630642 B CN 106630642B CN 201610843365 A CN201610843365 A CN 201610843365A CN 106630642 B CN106630642 B CN 106630642B
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energy storage
barium strontium
sodium base
glass ceramics
base glass
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CN106630642A (en
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王海涛
翟继卫
刘金花
沈波
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Tongji University
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    • 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
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
    • 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
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/08—Inorganic dielectrics
    • H01G4/12—Ceramic dielectrics
    • H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
    • H01G4/1254—Ceramic dielectrics characterised by the ceramic dielectric material based on niobium or tungsteen, tantalum oxides or niobates, tantalates

Abstract

The present invention relates to a kind of barium strontium niobate sodium base glass ceramics energy storage materials and the preparation method and application thereof, and the barium strontium niobate sodium base glass ceramics energy storage material is mainly by BaCO3、SrCO3、Na2CO3、Nb2O5And SiO2Raw material is prepared, and the molar ratio of five kinds of substances is BaCO3: SrCO3: Na2CO3: Nb2O5: SiO2=33.6x:33.6 (1-x): 8.4:28:30 carries out ingredient, and wherein x value range is 0-0.8；By ingredient after ball mill mixing, drying, and high temperature melting is carried out, high-temperature fusant is made；High-temperature fusant is poured into the metal die of preheating, stress relief annealing, transparent glass is made, and the transparent glass is cut into glass flake；Glass flake is subjected to Controlled Crystallization, obtains the barium strontium niobate sodium base glass ceramics energy storage material.Compared with prior art, system of the present invention is simple, and preparation method is simple, economical and practical without complicated post-processing step, and glass ceramics energy storage material obtained has superior dielectric performance, and the energy storage characteristic of material is significantly improved.

Description

A kind of barium strontium niobate sodium base glass ceramics energy storage material and the preparation method and application thereof
Technical field
The invention belongs to dielectric energy storage material technical fields, are related to a kind of barium strontium niobate sodium base glass ceramics energy storage material And preparation method thereof with answer.
Background technique
In recent years, Pulse Power Techniques are widely used to electronic computer, communication, radar, all-electric warship, electromagnetism rail The national defence such as road big gun weapon, hybrid vehicle, controlled laser nuclear fusion and modern industrial technology field.The energy storage of current material is close Obviously breaking through, does not occur also in degree, and the volume of energy storage device is occupied greatly in entire pulser, this also makes significantly About pulser is to miniaturization, the development of lightness.Therefore, currently in order to meeting the miniaturization and high storage of pulse power system Can density requirement, various countries material worker, which just tries to explore research, to be had high dielectric constant, low connects electrical loss and high voltage is strong The dielectric material of degree.
Glass ceramics is to prepare glass matrix using high-temperature fusion-method for quick cooling, is prepared using controllable crystallization method At glass ceramics.Compared with traditional ceramics material, barium strontium niobate sodium base glass ceramics has some apparent advantages, for example, system Standby uncomplicated, resistance to disruptive field intensity height, dielectric adjustable is strong, dielectric loss is low, possesses wide application in dielectric material field Prospect.Strontium barium niobate potash glass ceramics can form the co-melting body of strontium barium niobate and strontium potassium niobate, realize the high dielectric of potassium niobate The features such as constant, the resistance to disruptive field intensity of height of niobic acid barium and low-dielectric loss.Result of study shows barium strontium niobate sodium base glass ceramics Energy storage material energy storage density with higher.
Currently, the energy storage density of the energy storage material for capacitor, pulse technique etc. is also smaller, however it remains greatly Development space.In order to improve the energy storage density of material, many scholars are to titanate and niobates glass ceramics dielectric properties and storage Energy characteristic conducts extensive research.Wherein, D.F.Han et al. is by changing strontium lead ratio to niobates glass ceramics energy-storage property It is optimized, the study found that dielectric constant first increases and then decreases, resistance to disruptive field intensity reduces always, phase as strontium lead ratio increases The energy storage density first increases and then decreases for the glass ceramic material answered, when strontium lead ratio reach suitably than when, energy storage density reaches most Greatly 2.27J/cm3(Ceramics International, 2012,38:6903-6906).The niobic acid of Jun Du et al. research The energy storage density of barium sodium base glass ceramics is 1.87J/cm3(J.Phys.:Conf.Ser., 2009,152:0212061).And Shuangxi Xue et al. has studied the influence that barium sodium compares barium sodium niobate (BNN) base glass ceramic material energy-storage property, studies have shown that When barium sodium ratio reaches proper ratio, energy storage density reaches maximum 5.12J/cm3(Shuangxi Xue,et al.Ceramics International, 2014,40:7495-7499), and influence of the addition phosphoric acid to boronate glass ceramics performance, wherein Energy storage density maximum value reaches 9.1J/cm3(Guohua Chen et al.Mater.Lett., 2016,176:46-53).At present Until, although people conduct extensive research dielectric energy storage material, the glass ceramics energy storage material reported Energy storage density is not also sufficiently large, and dielectric loss is not sufficiently low.
Application No. is the Chinese invention patents of 201610006156.X to disclose a kind of SrNb2 O6 sodium base of high energy storage density Glass ceramics energy storage material and the preparation method and application thereof, which includes SrO, Na2O、 Nb2O5、SiO2Four kinds of ingredients, and the molar ratio of four kinds of substances is SrO:Na2O:Nb2O5: SiO2=42x:42 (1-x): 28:30, It is made by following steps: weighing raw material, after ball mill mixing, drying, and high temperature melting is carried out, high-temperature fusant is made；Then It is poured into the metal die of preheating, stress relief annealing, transparent glass is made, is cut into the glass with a thickness of 0.9~1.2mm Glass thin slice carries out Controlled Crystallization, obtains product, which can be applied to energy-storage capacitor material.Compared with above-mentioned patent, this Invention has following difference: 1) part strontium ion is substituted by barium ions；2) the more uniform densification of microstructure；3) it is stored up in height Under energy density case, dielectric constant improves nearly 1~4 times, and dielectric loss substantially reduces.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of energy storage density is higher, Dielectric loss is low, barium strontium niobate sodium base glass ceramics energy storage material of dense micro-structure and the preparation method and application thereof.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of preparation method of barium strontium niobate sodium base glass ceramics energy storage material, this method specifically includes the following steps:
(1) with BaCO3、SrCO3、Na2CO3、Nb2O5、SiO2For raw material, 33.6mol% [x BaCO in molar ratio3+(1-x) SrCO3] -8.4mol%Na2CO3- 28mol%Nb2O5- 30mol%SiO2Ingredient is carried out, wherein x value range is 0-0.8；
(2) by the ingredient of step (1) after ball mill mixing, drying, and high temperature melting is carried out, high-temperature fusant is made；
(3) high-temperature fusant made from step (2) is poured into the metal die of preheating, stress relief annealing is made transparent Glass, and the transparent glass is cut into glass flake；
(4) glass flake made from step (3) is subjected to Controlled Crystallization, obtains the barium strontium niobate sodium base glass pottery Porcelain energy storage material.
The value of x is 0,0.2,0.33,0.5 or 0.8 in step (1).
BaCO described in step (1)3、SrCO3、Na2CO3、Nb2O5And SiO2Purity be greater than 99wt%.
The time of ball mill mixing described in step (2) is 10-20h, and the temperature of the high temperature melting is 1500-1650 DEG C, the time of high temperature melting is 1.5-4h.
The time of ball mill mixing described in step (2) is 12-16h, the high temperature melting as a preferred technical solution, Temperature be 1500-1600 DEG C, time of high temperature melting is 2-3h.
The temperature of stress relief annealing described in step (3) is 600-700 DEG C, and the time of the stress relief annealing is 4- 7h。
The temperature of stress relief annealing described in step (3) is 600-700 DEG C as a preferred technical solution, and described goes The time of stress annealing is 5h.
Glass flake described in step (3) with a thickness of 0.9-1.5mm.
The temperature of Controlled Crystallization described in step (4) is 750-1100 DEG C, soaking time 2-5h.
The temperature of Controlled Crystallization described in step (4) is 750-950 DEG C as a preferred technical solution, and soaking time is 2-4h。
The barium strontium niobate sodium base glass ceramics energy storage material being prepared using the above method.
The application of barium strontium niobate sodium base glass ceramics energy storage material, the barium strontium niobate sodium base glass ceramics energy storage material Applied to energy-storage capacitor material.
In the present invention, the glass ceramics energy storage material is mainly by amorphous glass phase and ceramic phase composition, ceramic phase master It to be blue copper phase Sr6Nb10O30、Sr0.5Ba0.5Nb6、SrBaNaNb5O15Deng 33.6mol% [x BaCO in molar ratio3+(1- x)SrCO3] -8.4mol%Na2CO3- 28mol%Nb2O5- 30mol%SiO2Ingredient is carried out, wherein x=0~0.8.It is mixed through ball milling Material, drying, then high temperature melting reaction is carried out, and high-temperature fusant Quick pouring is formed into metal die, subsequent destressing is moved back Fire is cut into glass flake, then Controlled Crystallization, obtains the barium strontium niobate sodium base glass ceramics energy storage material.The present invention Based on 33.6mol% [xBaCO3+(1-x)SrCO3] -8.4mol%Na2CO3- 28mol%Nb2O5- 30mol%SiO2Ingredient, Middle x value range is 0~0.8；By adjusting BaCO3And SrCO3Glass pottery after mole when different heat treatment temperature Porcelain, phase structure are improved, and resistance to disruptive field intensity significantly improves, and as x=0.2, crystallization temperature is 750 DEG C, resistance to disruptive field intensity It is optimal value 2287kV/cm, theoretical energy storage density reaches 18.06J/cm3, dielectric loss at room temperature is reduced to 0.0077.
Compared with prior art, the invention has the characteristics that:
1) it is matched by changing ceramic composition, improves resistance to disruptive field intensity, so its energy storage density is made to be improved significantly, Dielectric loss is substantially reduced；
2) system is simple, and preparation method is simple, economical and practical without complicated post-processing step, (Sr/Ba, K) obtained NbO3Base glass ceramics energy storage material has superior dielectric performance, and the energy storage characteristic of material is significantly improved.
Detailed description of the invention
Fig. 1 is the X-ray diffraction analysis figure (XRD) of embodiment 1-5 barium strontium niobate sodium base glass ceramic material；
Fig. 2 is the X-ray diffraction analysis figure (XRD) of embodiment 6-8 barium strontium niobate sodium base glass ceramic material；
Fig. 3 is the dielectric temperature spectrum and dielectric loss figure of embodiment 1-5 barium strontium niobate sodium base glass ceramic material；
Fig. 4 is the dielectric temperature spectrum and dielectric loss figure of embodiment 6-8 barium strontium niobate sodium base glass ceramic material；
Fig. 5 is the Weibull distribution map of the resistance to disruptive field intensity of embodiment 1-5 barium strontium niobate sodium base glass ceramic material；
Fig. 6 is the Weibull distribution map of the resistance to disruptive field intensity of embodiment 6-8 barium strontium niobate sodium base glass ceramic material；
Fig. 7-1 is the scanning electron microscope diagram spectrum of 1 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-2 is the scanning electron microscope diagram spectrum of 2 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-3 is the scanning electron microscope diagram spectrum of 3 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-4 is the scanning electron microscope diagram spectrum of 4 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-5 is the scanning electron microscope diagram spectrum of 5 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-6 is the scanning electron microscope diagram spectrum of 6 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-7 is the scanning electron microscope diagram spectrum of 7 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-8 is the scanning electron microscope diagram spectrum of 8 barium strontium niobate sodium base glass ceramic material of embodiment；
Fig. 7-9 is the scanning electron microscope diagram spectrum of 9 barium strontium niobate sodium base glass ceramic material of embodiment；
Wherein, in Fig. 5 and Fig. 6, εrFor dielectric constant, tan δ is dielectric loss, EiFor the resistance to breakdown of i-th of test sample Field strength, n are the summation of resistance to breakdown field intensity values, EbFor the resistance to disruptive field intensity being distributed by Weibull.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Abbreviation used in throughout the specification has following meanings, unless clearly indicating otherwise in text: DEG C=Celsius Degree, kV=kilovolt, cm=centimetres；Mol=moles, h=hours；Min=minutes, mol%=molar percentage.Various raw materials It is purchased from commercial supplier with reagent, without being further purified, unless otherwise indicated.The raw materials and reagents of moisture-sensitive are deposited in It in hermetically sealed bottle, and directly uses, without specially treated.
Embodiment 1:
(1) it is greater than the BaCO of 99wt% with purity3、SrCO3、Na2CO3、Nb2O5、SiO2For feed proportioning, above-mentioned each component Molar percentage be 0,33.6%, 8.4%, 28% and 30%, after ball mill mixing 16h, drying, in 1520 DEG C of high temperature meltings 3h；
(2) high-temperature fusant that step (1) obtains is poured into metal die, in 600 DEG C of temperature stress relief annealing 6h, so The glass flake with a thickness of 0.9~1.5mm is obtained by cutting；
(3) glass flake made from step (2) is subjected to Controlled Crystallization in 800 DEG C of heat preservation 3h, obtains glass ceramics.
The XRD of sample obtained by the present embodiment as shown in Figure 1, dielectric properties as shown in figure 3, pressure-resistant performance test as schemed Shown in 5, for microscopic appearance as shown in Fig. 7-1, energy storage density is as shown in table 1.
Embodiment 2:
(1) it is greater than the BaCO of 99wt% with purity3、SrCO3、Na2CO3、Nb2O5、SiO2For feed proportioning, above-mentioned each component Molar percentage be 6.72%, 26.88%, 8.4%, 28% and 30%, after ball mill mixing 16h, drying, in 1520 DEG C of height Temperature fusing 2h；
(2) high-temperature fusant that step (1) obtains is poured into metal die, in 600 DEG C of temperature stress relief annealing 6h, so The glass flake with a thickness of 0.9~1.5mm is obtained by cutting；
(3) glass flake made from step (2) is subjected to Controlled Crystallization in 800 DEG C of heat preservation 3h, obtains glass ceramics.
The XRD of sample obtained by the present embodiment as shown in Figure 1, dielectric properties as shown in figure 3, pressure-resistant performance test as schemed Shown in 5, for microscopic appearance as shown in Fig. 7-2, energy storage density is as shown in table 1, value 14.87J/cm3, can be used as energy-storage capacitor Material.
Embodiment 3:
(1) it is greater than the BaCO of 99wt% with purity3、SrCO3、Na2CO3、Nb2O5、SiO2For feed proportioning, above-mentioned each component Molar percentage be 11.2%, 22.4%, 8.4%, 28% and 30%, after ball mill mixing 16h, drying, in 1520 DEG C of height Temperature fusing 2h；
(2) high-temperature fusant that step (1) obtains is poured into metal die, in 600 DEG C of temperature stress relief annealing 6h, so The glass flake with a thickness of 0.9~1.5mm is obtained by cutting；
(3) glass flake made from step (2) is subjected to Controlled Crystallization in 800 DEG C of heat preservation 3h, obtains glass ceramics.
The XRD of sample obtained by the present embodiment as shown in Figure 1, dielectric properties as shown in figure 3, pressure-resistant performance test as schemed Shown in 5, for microscopic appearance as shown in Fig. 7-3, energy storage density is as shown in table 1, value 12.83J/cm3, can be used as energy-storage capacitor Material.
Embodiment 4:
(1) it is greater than the BaCO of 99wt% with purity3、SrCO3、Na2CO3、Nb2O5、SiO2For feed proportioning, above-mentioned each component Molar percentage be 16.8%, 16.8%, 8.4%, 28% and 30%, after ball mill mixing 16h, drying, in 1520 DEG C of height Temperature fusing 2h；
(2) high-temperature fusant that step (1) obtains is poured into metal die, in 600 DEG C of temperature stress relief annealing 6h, so The glass flake with a thickness of 0.9~1.5mm is obtained by cutting；
(3) glass flake made from step (2) is subjected to Controlled Crystallization in 800 DEG C of heat preservation 3h, obtains glass ceramics.
The XRD of sample obtained by the present embodiment as shown in Figure 1, dielectric properties as shown in figure 3, pressure-resistant performance test as schemed Shown in 5, for microscopic appearance as shown in Fig. 7-4, energy storage density is as shown in table 1.
Embodiment 5:
(1) it is greater than the BaCO of 99wt% with purity3、SrCO3、Na2CO3、Nb2O5、SiO2For feed proportioning, above-mentioned each component Molar percentage be 26.88%, 6.72%, 8.4%, 28% and 30%, after ball mill mixing 16h, drying, in 1520 DEG C of height Temperature fusing 2h；
(2) high-temperature fusant that step 1) obtains is poured into metal die, in 600 DEG C of temperature stress relief annealing 6h, so The glass flake with a thickness of 0.9~1.5mm is obtained by cutting；
(3) glass flake made from step (2) is subjected to Controlled Crystallization in 800 DEG C of heat preservation 3h, obtains glass ceramics.
The XRD of sample obtained by the present embodiment as shown in Figure 1, dielectric properties as shown in figure 3, pressure-resistant performance test as schemed Shown in 5, for microscopic appearance as shown in Fig. 7-5, energy storage density is as shown in table 1.
Embodiment 6:
In the preparation method of the present embodiment barium strontium niobate sodium base glass ceramic material, Controlled Crystallization temperature is 750 DEG C, remaining With embodiment 2.
The XRD of sample obtained by the present embodiment as shown in Fig. 2, dielectric properties as shown in figure 4, pressure-resistant performance test as schemed Shown in 6, for microscopic appearance as shown in Fig. 7-6, energy storage density is as shown in table 1, value 18.06J/cm3, can be used as energy-storage capacitor Material.
Embodiment 7:
In the preparation method of the present embodiment barium strontium niobate sodium base glass ceramic material, Controlled Crystallization temperature is 900 DEG C, remaining With embodiment 2.
The XRD of sample obtained by the present embodiment as shown in Fig. 2, dielectric properties as shown in figure 4, pressure-resistant performance test as schemed Shown in 6, for microscopic appearance as shown in Fig. 7-7, energy storage density is as shown in table 1.
Embodiment 8:
In the preparation method of the present embodiment barium strontium niobate sodium base glass ceramic material, Controlled Crystallization temperature is 1000 DEG C, Remaining same embodiment 2.
The XRD of sample obtained by the present embodiment as shown in Fig. 2, dielectric properties as shown in figure 4, pressure-resistant performance test as schemed Shown in 6, microscopic appearance is as Figure 7-8, and energy storage density is as shown in table 1.
Embodiment 9:
In the preparation method of the present embodiment barium strontium niobate sodium base glass ceramic material, Controlled Crystallization temperature is 1100 DEG C, Remaining same embodiment 2.
The XRD of sample obtained by the present embodiment as shown in Fig. 2, dielectric properties as shown in figure 4, pressure-resistant performance test as schemed Shown in 6, microscopic appearance is as Figure 7-9, and energy storage density is as shown in table 1.
1 barium strontium niobate sodium base glass ceramics energy storage material performance characterization of table
Based on the above embodiment, the present invention has prepared the barium strontium niobate sodium base glass ceramics energy storage material of high energy storage density Material, energy storage density maximum may be up to 18.06J/cm3, and dielectric loss is relatively low, and therefore, barium strontium niobate produced by the present invention Sodium base glass ceramics energy storage material is used as energy-storage capacitor material.
Embodiment 10:
(1) it is greater than the BaCO of 99wt% with purity3、SrCO3、Na2CO3、Nb2O5、SiO2For feed proportioning, above-mentioned each component Molar percentage be 11.09%, 22.51%, 8.4%, 28% and 30%, after ball mill mixing 12h, drying, at 1580 DEG C High temperature melting 2.5h；
(2) high-temperature fusant that step (1) obtains is poured into metal die, in 640 DEG C of temperature stress relief annealing 5h, so The glass flake with a thickness of 0.9mm is obtained by cutting；
(3) glass flake made from step (2) is subjected to Controlled Crystallization in 800 DEG C of heat preservation 3h, obtains glass ceramics.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention. Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention Within protection scope.

Claims (6)

1. a kind of preparation method of barium strontium niobate sodium base glass ceramics energy storage material, which is characterized in that this method specifically include with Lower step:
(1) with BaCO3、SrCO3、Na2CO3、Nb2O5、SiO2For raw material, 33.6mol% [xBaCO in molar ratio3+(1-x) SrCO3] -8.4mol%Na2CO3- 28mol%Nb2O5- 30mol%SiO2Ingredient is carried out, wherein x value is 0.2；
(2) by the ingredient of step (1) after ball mill mixing, drying, and high temperature melting is carried out, high-temperature fusant is made；
(3) high-temperature fusant made from step (2) is poured into the metal die of preheating, stress relief annealing, transparent glass is made, And the transparent glass is cut into glass flake；
(4) glass flake made from step (3) is subjected to Controlled Crystallization, crystallization temperature is 750 DEG C, soaking time 3h makes Obtain the barium strontium niobate sodium base glass ceramics energy storage material.
2. a kind of preparation method of barium strontium niobate sodium base glass ceramics energy storage material according to claim 1, feature exist In BaCO described in step (1)3、SrCO3、Na2CO3、Nb2O5And SiO2Purity be greater than 99wt%.
3. a kind of preparation method of barium strontium niobate sodium base glass ceramics energy storage material according to claim 1, feature exist In the time of ball mill mixing described in step (2) is 10-20h, and the temperature of the high temperature melting is 1500-1650 DEG C, high temperature The time of fusing is 1.5-4h.
4. a kind of preparation method of barium strontium niobate sodium base glass ceramics energy storage material according to claim 1, feature exist In the temperature of stress relief annealing described in step (3) is 600-700 DEG C, and the time of the stress relief annealing is 4-7h.
5. the barium strontium niobate sodium base glass ceramics energy storage material being prepared using the described in any item methods of Claims 1-4.
6. the application of barium strontium niobate sodium base glass ceramics energy storage material as claimed in claim 5, which is characterized in that the niobium Sour barium strontium sodium base glass ceramics energy storage material is applied to energy-storage capacitor material.
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