Strontium titanate based lead-free high-pressure-resistant ceramic energy storage material and preparation method thereof
A ceramic material and high-voltage-resistant technology, applied in the field of energy storage ceramics, can solve the problems of limited application, low energy storage density, and low saturation polarization strength, and achieve uniform grain size distribution, high energy storage density, and good stability Effect
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[0046] The preparation method of the strontium titanate-based lead-free high-voltage resistant energy storage ceramic material of the present invention comprises the following steps:
[0047] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 and TiO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 12-16 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1150-1200°C for 3-5 hours to obtain blocks shape solid, and then crush the massive solid through a 120-mesh sieve to obtain SrTiO 3 Powder;
[0048] (2) According to the chemical formula 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Analytical pure Bi 2 o 3 , Na 2 CO 3 ,TiO 2 , BaCO 3 , La 2 o 3 and ZrO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 12-16 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 800-850°C ...
Embodiment 1
[0061] The chemical formula of the ceramic material in this example is: (1-x)SrTiO 3 -x(0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 ), where x represents 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Mole fraction, and x=0.1.
[0062] The preparation method of the above-mentioned lead-free high energy storage density ceramic material comprises the following steps:
[0063] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 and TiO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 12 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1150°C for 5 hours to obtain a block solid, and then the block After the solid is crushed and passed through a 120-mesh sieve, the SrTiO 3 Powder;
[0064] (2) According to the chemical formula 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Analytical pure Bi 2 o 3 , N...
Embodiment 2
[0072] The chemical formula of the ceramic material in this example is: (1-x)SrTiO 3 -x(0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 ), where x represents 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Mole fraction, and x=0.2.
[0073] The preparation method of the above-mentioned lead-free high energy storage density ceramic material comprises the following steps:
[0074] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 and TiO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 13 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1165°C for 5 hours to obtain a block solid, and then the block After the solid is crushed and passed through a 120-mesh sieve, the SrTiO 3 Powder;
[0075] (2) According to the chemical formula 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Analytical pure Bi 2 o 3 ,...
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