CN103833225A - Preparation method of barium strontium titanate-based glass ceramic energy storage material - Google Patents
Preparation method of barium strontium titanate-based glass ceramic energy storage material Download PDFInfo
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- CN103833225A CN103833225A CN201410010280.4A CN201410010280A CN103833225A CN 103833225 A CN103833225 A CN 103833225A CN 201410010280 A CN201410010280 A CN 201410010280A CN 103833225 A CN103833225 A CN 103833225A
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Abstract
The invention relates to a preparation method of a barium strontium titanate-based glass ceramic energy storage material, which comprises the following steps: preparing the raw materials on the basis of x mol% of (Ba0.4Sr0.6)TiO3-y mol% of (Ba-B-Al-Si-O), wherein the Ba-B-Al-Si-O glass components are, by amount of substance, 12% of BaO, 63% of SiO2, 16% of B2O3, and 9% of Al2O3, and x+y=100; performing ball milling and material mixing, then drying, and performing high temperature fusing; casting the high temperature melt into a metal mold, performing stress relieving annealing, then cutting to obtain glass slices with a thickness of 0.8-1.2 mm; performing controlled crystallization of the glass slices in a conventional oven or a microwave oven to prepare the glass ceramic dielectric medium with high energy storage density. The method of the invention is simple, and the prepared glass ceramic material has significantly improved pressure resistance, and thus greatly improved energy storage performance.
Description
Technical field
The invention belongs to dielectric medium energy storage material field, especially relate to a kind of preparation method of barium-strontium titanate-based glass-ceramic energy storage material.
Background technology
The ceramic condenser with high energy storage density, high withstand voltage properties is one of electronic component common in electronics, is widely used in fields such as laser, radar, mobile communication and aerospace.In order to meet the miniaturization of pulse power system and the requirement of high energy storage density, various countries material supplier author is just trying to explore research and is having high-k, the low dielectric material that connects electrical loss and high compressive strength, barium-strontium titanate-based glass ceramic material is paid close attention to because its excellent dielectric properties have caused in this field widely in recent years, and barium boron aluminium silicon non-alkali glass it is reported very high resistance to breaking down field strength.Glass-ceramic is to adopt the preparation method of glass that oxide compound is melt into vitreous state, and then thermal treatment makes devitrification of glass at a certain temperature, and then obtains glass and ceramic complex body.Compare with traditional barium strontium titanate material, barium-strontium titanate-based glass-ceramic has some obvious advantages, if very small strontium-barium titanate uniform crystal particles is distributed in the high voltage bearing glass basis of energy, and sample is very fine and close.
Xiangrong Wang etc. has studied and in barium titanate ceramics, has added the impact on dielectric breakdown performance after glass, research shows, along with the increase of glass content, crystal grain obviously reduces, and has verified the relation of the difference of intensity of activation between breaking down field strength and crystal grain inside and crystal boundary.Jichun Chen etc. has studied the dielectric properties of Ba/Sr on barium phthalate base glass-ceramic and the impact of microtexture, and result shows that Ba/Sr increases promotion BaTiO
3and BaAl
2si
2o
8separate out, thereby cause because BaTiO
3, BaAl
2si
2o
8and the difference of thermal expansivity and the tiny crack that causes between glass basis, Ba/Sr increases to be beneficial to and separates out dendritic crystalline substance in addition, therefore reduced dielectric breakdown field intensity when the increase of Ba/Sr improves specific inductivity.Jinwen Wang etc. carries out sintering crystallization after having studied the strontium-barium titanate that a series of barium-strontium titanate-based glass adds different contents, has analyzed its impact on microtexture and dielectric properties.In addition also have many scholars to carry out the assorted research to energy-storage property of glass-ceramic system internal reference, superfine the adopting of Xu studied doping Ag
+on the impact of barium-strontium titanate-based glass energy storage characteristic.Xiangrong Wang etc. has studied AlF
3difference is mixed the microtexture of concentration on barium-strontium titanate-based glass-ceramic and the impact of energy storage characteristic.
The number of applying for a patent is the preparation method that 201210254299.4 Chinese patent has been announced a kind of barium-strontium titanate-based glass-ceramic energy storage material, and its batching is (Ba
xsr
1-x) TiO
3-aAl
2o
3-bSiO
2, wherein x=0.4~0.6, (a+b)/(2+a+b)=0.3~0.35, a/b=0.5~1.0, adopt high-temperature fusion method of cooling to make after glass block, cut into slices, and controlled inspiration obtains sample.The method is simple, and prepared glass ceramic material energy-storage property improves a lot, but the resistance to breaking down field strength of the prepared glass ceramic material of this patent is lower.
Summary of the invention
Object of the present invention is exactly the preparation method that a kind of barium-strontium titanate-based glass-ceramic energy storage material of the resistance to breaking down field strength that improves glass-ceramic is provided in order to overcome the defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A preparation method for barium-strontium titanate-based glass-ceramic energy storage material, adopts following steps:
(1) with BaCO
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for raw material, by xmol% (Ba
0.4sr
0.6) TiO
3-y mol% (Ba-B-Al-Si-O) batching, wherein x+y=100, Ba-B-Al-Si-O non-alkali glass composition is by mole% being 12%BaO, 63%SiO
2, 16%B
2o
3, 9%Al
2o
3, through ball mill mixing post-drying, high temperature melting;
(2) high-temperature fusant of step (1) gained is poured in metal die, stress relief annealing, then obtains through cutting the glass flake that thickness is 0.8~1.2mm;
(3) glass flake step (2) being made carries out Controlled Crystallization, obtains glass-ceramic;
(4) glass-ceramic step (3) being obtained is carried out microwave thermal processing in microwave oven, prepares the barium-strontium titanate-based glass-ceramic energy storage material of high energy storage density.
As preferred embodiment, BaCO
3and SrCO
3mole number sum by molar weight excessive 1.1~1.3 times.
As preferred embodiment, BaCO
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3purity be greater than 99wt%, in non-alkali glass composition, introduce 16mol%B
2o
3, accelerate fusing and the clarification of glass, reduce the temperature of fusion of glass, thereby improve the homogeneity of glass and be beneficial to the moulding of glass, be beneficial to the raising of resistance to breaking down field strength.
As preferred embodiment, in step (1), the time of ball mill mixing is 10~20h, and the temperature of high temperature melting is 1550~1650 DEG C, and the time of high temperature melting is 3~4h.
As preferred embodiment, in step (2), the temperature of stress relief annealing is 600~700 DEG C, and the time is 4~6h.
As preferred embodiment, the Controlled Crystallization in step (3) completes in conventional oven or microwave oven.
As the embodiment being more preferably, the temperature of carrying out Controlled Crystallization in conventional oven is 900~1200 DEG C, and soaking time is 1~2h:
As the embodiment being more preferably, the temperature of carrying out Controlled Crystallization in microwave oven is 900~1000 DEG C, and soaking time is 10~30min.
As the embodiment being more preferably, the heat-up rate that carries out Controlled Crystallization in microwave oven is 20~40 DEG C/min, the crystallization method of microwave treatment is because it can realize the feature that is rapidly heated and the change of heating mechanism, affect devitrification of glass Crystallization Process, thereby adjust the microscopic appearance of glass-ceramic, therefore the raising of the resistance to breaking down field strength of glass-ceramic has been contributed.
As preferred embodiment, in step (4), the heat treated temperature of microwave is 900~1000 DEG C, and soaking time is 10~30min, and heat-up rate is 20~40 DEG C/min.
Second aspect present invention provides the prepared glass-ceramic energy storage material of preparation method of barium-strontium titanate-based glass-ceramic energy storage material of the barium boron aluminosilicate glass system of described high energy storage density in capacitor deposited energy field, the particularly application aspect Pulse Power Techniques.
Compared with prior art, the present invention is optimized the glass-ceramic of barium-strontium titanate-based system, by its microstructure of thermal treatment process control, reduce dephasign, improve specific inductivity, make crystallization even by polytechnic control, microscopic appearance is controlled, reduces or eliminates separating out of dendritic crystalline substance, to improve resistance to breaking down field strength, improve specific inductivity, thereby its theoretical density is improved significantly.Ba-B-Al-Si-O non-alkali glass, as a kind of good glass system, contains the strontium-barium titanate thing phase with high-k perovskite structure, has fine and close microtexture and higher resistance to breaking down field strength.Thereby make this glass-ceramic there is higher theoretical storage density.Microwave treatment is as a kind of new treatment process, have that method is simple, reaction is fast, efficiency is high, homogeneous heating and low power consumption and other advantages, can improve the energy-storage property of material, particularly compressive strength, the crystal grain of sample is more regular to be prolonged surrounding development growth and reunites together, microscopic appearance is followed evenly, thereby resistance to breaking down field strength is improved.The present invention is based on x mol% (Ba
0.4sr
0.6) TiO
3the glass ceramic material (x+y=100) of-y mol% (Ba-B-Al-Si-O) system, the glass-ceramic of this system has higher compressive strength (up to 1236kV/cm) by microwave thermal processing, improve between crystalline phase, state of interface between crystalline phase and glassy phase, eliminate boundary defect, thereby greatly improve the compressive strength of glass-ceramic.With compared with the heat treated glass-ceramic of microwave, compressive strength obviously improves, and reaches 1486kV/cm, and theoretical energy storage density reaches 2.74J/cm
3.
Brief description of the drawings
Fig. 1 is the XRD figure spectrum (A-embodiment 3, B-embodiment 4) of the glass-ceramic in embodiment 3-4;
Fig. 2 is the SEM collection of illustrative plates (a-embodiment 3, b-embodiment 2) of the glass-ceramic in embodiment 2-4;
Fig. 3 is the thermogram (A-embodiment 3, B-embodiment 4) of the glass-ceramic in embodiment 3-4;
Fig. 4 is Weibull Plots (withstand voltage properties, A-embodiment 3, B-embodiment 4, C-embodiment 1, D-example 2, the ε in figure of the glass-ceramic in embodiment 1-4
rfor specific inductivity, tan δ is dielectric loss, E
bDSfor resistance to breaking down field strength).
Embodiment
Below, by specific specific examples explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification sheets.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification sheets also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Notice, processing unit or device concrete not dated in the following example all adopt conventional equipment or the device in this area; All force value and scope all refer to absolute pressure.
In addition should be understood that one or more method stepss of mentioning in the present invention do not repel between the step that can also have additive method step or clearly mention at these before and after described combination step can also insert additive method step, except as otherwise noted; Will also be understood that, the relation that is connected between one or more equipment/devices of mentioning in the present invention is not repelled between two equipment/devices that can also have other equipment/devices or clearly mention at these before and after described clustered aggregates/device can also insert other equipment/devices, except as otherwise noted.And, except as otherwise noted, the numbering of various method steps is only for differentiating the convenient tool of various method steps, but not for limiting the ordering of various method steps or limiting the enforceable scope of the present invention, the change of its relativeness or adjustment, in the situation that changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As used in whole specification sheets, following abbreviation has following implication, unless obviously referred else in literary composition: DEG C=degree Celsius; Mm=millimeter; Cm=centimetre of rice; Mol=mole; H=hour; Min=minute; Wt%=mass percent; Mol%=molar percentage.Various raw materials and reagent are all purchased from commercial supplier, without being further purified, except as otherwise noted.The raw material of moisture-sensitive and reagent are all deposited in hermetically sealed bottle, and directly use, and all do not pass through special processing.
Glass ceramic material 50mol% (the Ba of high energy storage density
0.4sr
0.6) TiO
3-50mol% (Ba-B-Al-Si-O):
1) be greater than the BaCO of 99wt% with purity
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for feed proportioning, the molar percentage of its each component is 17%, 17%, 22%, 31.5%, 4.5%, 8%, through ball mill mixing 20h post-drying, at 1600 DEG C of high temperature melting 3h;
2) by step 1) high-temperature fusant that obtains is poured in metal die, at 700 DEG C of temperature stress relief annealing 4h, then through cutting to obtain thickness be 1mm glass flake;
3) by step 2) glass flake that makes is incubated 2h and carries out Controlled Crystallization in the conventional stove of 900 DEG C of temperature, obtains glass-ceramic.
The withstand voltage properties of the prepared sample of the present embodiment is tested as shown in Figure 4.
Embodiment 2
Glass ceramic material 60mol% (the Ba of high energy storage density
0.4sr
0.6) TiO
3-40mol% (Ba-B-Al-Si-O):
1) be greater than the BaCO of 99wt% with purity
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for feed proportioning, the molar percentage of its each component is 18.8%, 20.1%, 26.4%, 25.2%, 3.6%, 6.4%, through ball mill mixing 20h post-drying, at 1600 DEG C of high temperature melting 3h;
2) by step 1) high-temperature fusant that obtains is poured in metal die, at 700 DEG C of temperature stress relief annealing 4h, then through cutting to obtain thickness be 1mm glass flake;
3) by step 2) glass flake that makes is incubated 2h and carries out Controlled Crystallization in the conventional stove of 1000 DEG C of temperature, obtains glass-ceramic.
The withstand voltage properties of the prepared sample of the present embodiment is tested as shown in Figure 4.
Embodiment 3
Glass ceramic material 70mol% (the Ba of high energy storage density
0.4sr
0.6) TiO
3-40mol% (Ba-B-Al-Si-O):
1) be greater than the BaCO of 99wt% with purity
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for feed proportioning, the molar percentage of its each component is 18.88%, 22.92%, 31.8%, 18.9%, 2.7%, 4.8%, through ball mill mixing 20h post-drying, at 1600 DEG C of high temperature melting 3h;
2) high-temperature fusant step 1 being obtained is poured in metal die, at 700 DEG C of temperature stress relief annealing 4h, then obtains through cutting the glass flake that thickness is 1mm;
3) glass flake step 2 being made is incubated 2h and carries out Controlled Crystallization in the conventional stove of 950 DEG C of temperature, obtains glass-ceramic.
As shown in Figure 1, as shown in Figure 2, as shown in Figure 3, withstand voltage properties as shown in Figure 4 for dielectric properties for SEM collection of illustrative plates for the XRD figure of the prepared sample of the present embodiment.
Embodiment 4
Prepare as follows a kind of barium-strontium titanate-based glass ceramic material:
1) be greater than the BaCO of 99wt% with purity
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for feed proportioning, the molar percentage of its each component is 18.88%, 22.92%, 31.8%, 18.9%, 2.7%, 4.8%, through ball mill mixing 20h post-drying, at 1600 DEG C of high temperature melting 3h;
2) by step 1) high-temperature fusant that obtains is poured in metal die, at 700 DEG C of temperature stress relief annealing 4h, then through cutting to obtain thickness be 1mm glass flake;
3) by step 2) glass flake that makes is incubated 30min and carries out Controlled Crystallization in the microwave oven of 950 DEG C of temperature, obtains glass-ceramic.
The XRD figure of the prepared sample of the present embodiment as shown in Figure 1, contain as can be seen from Figure the strontium-barium titanate thing phase with high-k perovskite structure, thereby the relative simple glass of the glass-ceramic of gained of the present invention has higher specific inductivity in gained sample.SEM collection of illustrative plates as shown in Figure 2, the microscopic appearance of microwave treatment gained sample is more even as seen from the figure, and the crystal grain of the sample of conventional Heat Treatment mode gained becomes dendritic growth to reunite, the crystal grain of the sample of microwave treatment gained is more regular to be prolonged surrounding development growth and reunites together, microscopic appearance is followed evenly, thereby resistance to breaking down field strength is improved.Dielectric properties as shown in Figure 3 because the principal crystalline phase strontium-barium titanate in design component is constant, therefore the specific inductivity of two kinds of crystallization scheme gained is close.As shown in Figure 4, the glass-ceramic of gained of the present invention has higher resistance to breaking down field strength to withstand voltage properties, the especially sample of microwave crystallization processing mode gained.
Embodiment 5
A preparation method for barium-strontium titanate-based glass-ceramic energy storage material, adopts following steps:
(1) with BaCO
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for raw material, by 20mol% (Ba
0.4sr
0.6) TiO
3-80mol% (Ba-B-Al-Si-O) batching, Ba-B-Al-Si-O non-alkali glass composition is by mole% being 12%BaO, 63%SiO
2, 16%B
2o
3, 9%Al
2o
3, through ball mill mixing post-drying, high temperature melting, the time of ball mill mixing is 20h, and the temperature of high temperature melting is 1650 DEG C, and the time of high temperature melting is 3h, in non-alkali glass composition, introduces 16mol%B
2o
3, accelerate fusing and the clarification of glass, reduce the temperature of fusion of glass, thereby improve the homogeneity of glass and be beneficial to the moulding of glass, be beneficial to the raising of resistance to breaking down field strength;
(2) high-temperature fusant of step (1) gained is poured in metal die, stress relief annealing, the temperature of stress annealing is 700 DEG C, the time is 4h, then obtains through cutting the glass flake that thickness is 1.2mm;
(3) glass flake step (2) being made carries out Controlled Crystallization in microwave oven, and temperature is 900~1000 DEG C, and soaking time is 10~30min, and the temperature adopting in the present embodiment is 900 DEG C, and soaking time 20min, obtains glass-ceramic;
(4) glass-ceramic step (3) being obtained is carried out microwave thermal processing in microwave oven, temperature is 1000 DEG C, soaking time is 10min, heat-up rate is 40 DEG C/min, prepare the barium-strontium titanate-based glass-ceramic energy storage material of high energy storage density, can in capacitor deposited energy field, apply.
Embodiment 6
A preparation method for barium-strontium titanate-based glass-ceramic energy storage material, adopts following steps:
(1) with BaCO
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for raw material, by 50mol% (Ba
0.4sr
0.6) TiO
3-50mol% (Ba-B-Al-Si-O) batching, Ba-B-Al-Si-O non-alkali glass composition is by mole% being 12%BaO, 63%SiO
2, 16%B
2o
3, 9%Al
2o
3, through ball mill mixing post-drying, high temperature melting, the time of ball mill mixing is 10h, and the temperature of high temperature melting is 1550 DEG C, and the time of high temperature melting is 3h, in non-alkali glass composition, introduces 16mol%B
2o
3, accelerate fusing and the clarification of glass, reduce the temperature of fusion of glass, thereby improve the homogeneity of glass and be beneficial to the moulding of glass, be beneficial to the raising of resistance to breaking down field strength;
(2) high-temperature fusant of step (1) gained is poured in metal die, stress relief annealing, the temperature of stress annealing is 600 DEG C, the time is 6h, then obtains through cutting the glass flake that thickness is 0.8mm;
(3) glass flake step (2) being made carries out Controlled Crystallization in conventional oven, and the temperature of Controlled Crystallization is 900~1200 DEG C, and soaking time is 1~2h, and in the present embodiment, temperature is 1000 DEG C, and soaking time is 2h, obtains glass-ceramic;
(4) glass-ceramic step (3) being obtained is carried out microwave thermal processing in microwave oven, the heat treated temperature of microwave is 900 DEG C, soaking time is 30min, heat-up rate is 20~40 DEG C/min, prepare the barium-strontium titanate-based glass-ceramic energy storage material of high energy storage density, can in capacitor deposited energy field, apply.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (9)
1. a preparation method for barium-strontium titanate-based glass-ceramic energy storage material, is characterized in that, the method adopts following steps:
(1) with BaCO
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3for raw material, by xmol% (Ba
0.4sr
0.6) TiO
3-y mol% (Ba-B-Al-Si-O) batching, wherein x+y=100, Ba-B-Al-Si-O non-alkali glass composition is by mole% being 12%BaO, 63%SiO
2, 16%B
2o
3, 9%Al
2o
3, through ball mill mixing post-drying, high temperature melting;
(2) high-temperature fusant of step (1) gained is poured in metal die, stress relief annealing, then obtains through cutting the glass flake that thickness is 0.8~1.2mm;
(3) glass flake step (2) being made carries out Controlled Crystallization, obtains glass-ceramic;
(4) glass-ceramic step (3) being obtained is carried out microwave thermal processing in microwave oven, prepares the barium-strontium titanate-based glass-ceramic energy storage material of high energy storage density.
2. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 1, is characterized in that, described BaCO
3, SrCO
3, TiO
2, SiO
2, Al
2o
3, B
2o
3purity be greater than 99wt%.
3. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 1, is characterized in that, in step (1), in non-alkali glass composition, introduces 16mol%B
2o
3, accelerate fusing and the clarification of glass, reduce the temperature of fusion of glass, thereby improve the homogeneity of glass and be beneficial to the moulding of glass, be beneficial to the raising of resistance to breaking down field strength.
4. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 1, it is characterized in that, in step (1), the time of ball mill mixing is 10~20h, and the temperature of high temperature melting is 1550~1650 DEG C, and the time of high temperature melting is 3~4h.
5. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 1, is characterized in that, in step (2), the temperature of stress relief annealing is 600~700 DEG C, and the time is 4~6h.
6. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 1, is characterized in that, the Controlled Crystallization in step (3) completes in conventional oven or microwave oven.
7. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 6, is characterized in that,
The temperature of carrying out Controlled Crystallization in conventional oven is 900~1200 DEG C, and soaking time is 1~2h;
The temperature of carrying out Controlled Crystallization in microwave oven is 900~1000 DEG C, and soaking time is 10~30min.
8. the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material according to claim 1, it is characterized in that, in step (4), the heat treated temperature of microwave is 900~1000 DEG C, and soaking time is 10~30min, and heat-up rate is 20~40 DEG C/min.
9. according to the preparation method of a kind of barium-strontium titanate-based glass-ceramic energy storage material described in any one in claim 1-8, it is characterized in that, the barium-strontium titanate-based glass-ceramic energy storage material preparing is in the application in capacitor deposited energy field.
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CN105399333A (en) * | 2015-11-10 | 2016-03-16 | 同济大学 | Strontium barium niobate-based glass ceramic energy storage material and preparation method thereof |
CN105645772A (en) * | 2016-01-06 | 2016-06-08 | 同济大学 | High-energy-storage-density strontium-sodium-niobate-base glass ceramic energy storage material, and preparation and application thereof |
CN105731806A (en) * | 2016-01-18 | 2016-07-06 | 同济大学 | High energy storage density strontium potassium niobate based glass ceramic energy storage material and preparation and application thereof |
CN114890676A (en) * | 2021-06-21 | 2022-08-12 | 桂林电子科技大学 | High-dielectric high-energy-storage microcrystalline glass dielectric material and preparation method thereof |
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CN104803605A (en) * | 2015-03-26 | 2015-07-29 | 同济大学 | Rare-earth-doped barium-strontium-titanate-based glass ceramic energy storage material and preparation method thereof |
CN104803605B (en) * | 2015-03-26 | 2018-04-27 | 同济大学 | A kind of rare earth-doped strontium titanate barium base glass ceramics energy storage material and preparation method thereof |
CN105399333A (en) * | 2015-11-10 | 2016-03-16 | 同济大学 | Strontium barium niobate-based glass ceramic energy storage material and preparation method thereof |
CN105645772A (en) * | 2016-01-06 | 2016-06-08 | 同济大学 | High-energy-storage-density strontium-sodium-niobate-base glass ceramic energy storage material, and preparation and application thereof |
CN105645772B (en) * | 2016-01-06 | 2018-07-24 | 同济大学 | The SrNb2 O6 sodium base glass ceramics energy storage material of high energy storage density and preparation and application |
CN105731806A (en) * | 2016-01-18 | 2016-07-06 | 同济大学 | High energy storage density strontium potassium niobate based glass ceramic energy storage material and preparation and application thereof |
CN114890676A (en) * | 2021-06-21 | 2022-08-12 | 桂林电子科技大学 | High-dielectric high-energy-storage microcrystalline glass dielectric material and preparation method thereof |
CN114890676B (en) * | 2021-06-21 | 2023-07-07 | 桂林电子科技大学 | High-dielectric high-energy-storage microcrystalline glass dielectric material and preparation method thereof |
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