High breakdown field strength and energy storage density silicon dioxide doped cadmium copper titanate giant dielectric ceramic material and preparation method
A technology of silicon dioxide and ceramic materials, used in circuits, capacitors, electrical components, etc., can solve the problem of low energy storage density, and achieve the effects of low reaction temperature, strong practicability and good repeatability
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Embodiment 1
[0021] 1. According to CdCu 3 Ti 4 O 12 The stoichiometric ratio of 3.1159g Cd(NO 3 ) 2 ·4H 2 O, 7.3212g Cu(NO 3 ) 2 ·3H 2 O was added to 10 mL of a mixed solvent of absolute ethanol and deionized water to prepare solution A, and 13.8 mL of Ti (C 4 H 9 O) 4 Add into 52.2mL absolute ethanol to prepare solution B; mix solution A and solution B, and add 4mL glacial acetic acid, the concentration of butyl titanate in the obtained mixed solution is 0.5mol / L, and the volume fraction of glacial acetic acid is 5.0 %, the volume fraction of deionized water is 10%, heated at 45 ° C and stirred evenly to obtain a sol, continue to stir until the sol becomes a gel, age the gel for 12 hours, and dry it at 100 ° C for 48 hours, A brown-blue loose xerogel was obtained; after grinding the xerogel, calcined at 650°C for 10 hours to obtain CdCu 3 Ti 4 O 12 Ceramic powder.
[0022] 2. To CdCu 3 Ti 4 O 12 1.0% by mass of silica powder was added to the ceramic powder, and 5-6mm aga...
Embodiment 2
[0024] In this example, to CdCu 3 Ti 4 O 12 Silica powder of 2.0% by mass was added to the ceramic powder, and other steps were the same as those in Example 1 to obtain a silica-doped copper-cadmium titanate giant dielectric ceramic material with high breakdown field strength and energy storage density.
Embodiment 3
[0026] In this example, to CdCu 3 Ti 4 O 12 Silica powder of 4.0% by mass was added to the ceramic powder, and other steps were the same as in Example 1 to obtain a silica-doped copper-cadmium titanate giant dielectric ceramic material with high breakdown field strength and energy storage density.
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