A barium strontium niobate sodium based glass ceramic energy storage material and its preparation method and application
A technology of glass ceramics and energy storage materials, which is applied in the parts of fixed capacitors and dielectrics of fixed capacitors, etc., can solve the problems of insufficient energy storage density and low dielectric loss of glass ceramic energy storage materials, etc., and achieve improvement. The effect of resistance to breakdown field strength, reduction of dielectric loss, and improvement of energy storage density
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Embodiment 1
[0047] (1) BaCO with a purity greater than 99wt% 3 , SrCO 3 、Na 2 CO 3 , Nb 2 o 5 , SiO 2 For raw material batching, the molar percentages of the above components are 0, 33.6%, 8.4%, 28% and 30%. After ball milling for 16 hours, dry and melt at 1520°C for 3 hours;
[0048] (2) Pouring the high-temperature melt obtained in step (1) into a metal mold, annealing for stress relief at 600° C. for 6 hours, and then cutting to obtain glass flakes with a thickness of 0.9 to 1.5 mm;
[0049] (3) The glass flakes prepared in step (2) were kept at 800° C. for 3 hours for controlled crystallization to obtain glass ceramics.
[0050] The XRD of the sample that present embodiment makes is as figure 1 As shown, the dielectric properties are as image 3 As shown, the withstand voltage performance test is as follows Figure 5 As shown, the microscopic morphology is as Figure 7-1 As shown, the energy storage density is shown in Table 1.
Embodiment 2
[0052] (1) BaCO with a purity greater than 99wt% 3 , SrCO 3 、Na 2 CO 3 , Nb 2 o 5 , SiO 2 For raw material ingredients, the molar percentages of the above components are 6.72%, 26.88%, 8.4%, 28% and 30%. After ball milling and mixing for 16 hours, dry and melt at 1520°C for 2 hours;
[0053] (2) Pouring the high-temperature melt obtained in step (1) into a metal mold, annealing for stress relief at 600° C. for 6 hours, and then cutting to obtain glass flakes with a thickness of 0.9 to 1.5 mm;
[0054] (3) The glass flakes prepared in step (2) were kept at 800° C. for 3 hours for controlled crystallization to obtain glass ceramics.
[0055] The XRD of the sample that present embodiment makes is as figure 1 As shown, the dielectric properties are as image 3 As shown, the withstand voltage performance test is as follows Figure 5 As shown, the microscopic morphology is as Figure 7-2 As shown, the energy storage density is shown in Table 1, and its value is 14.87J / cm ...
Embodiment 3
[0057] (1) BaCO with a purity greater than 99wt% 3 , SrCO 3 、Na 2 CO 3 , Nb 2 o 5 , SiO 2 For raw material batching, the molar percentages of the above components are 11.2%, 22.4%, 8.4%, 28% and 30%. After ball milling and mixing for 16 hours, dry and melt at 1520°C for 2 hours;
[0058] (2) Pouring the high-temperature melt obtained in step (1) into a metal mold, annealing for stress relief at 600° C. for 6 hours, and then cutting to obtain glass flakes with a thickness of 0.9 to 1.5 mm;
[0059] (3) The glass flakes prepared in step (2) were kept at 800° C. for 3 hours for controlled crystallization to obtain glass ceramics.
[0060] The XRD of the sample that present embodiment makes is as figure 1 As shown, the dielectric properties are as image 3 As shown, the withstand voltage performance test is as follows Figure 5 As shown, the microscopic morphology is as Figure 7-3 As shown, the energy storage density is shown in Table 1, and its value is 12.83J / cm 3 , ...
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