Samarium-doped sodium bismuth titanate-bismuth strontium titanate ceramic material with high energy storage density and preparation method thereof

A high energy storage density, sodium bismuth titanate technology, applied in the field of ceramic capacitor material processing, can solve the problem of insufficient energy storage density, and achieve the effect of less surface air gap, low preparation cost and high density

Inactive Publication Date: 2021-08-06
HUANGSHAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a samarium-doped sodium bismuth titanate-strontium bismuth titanate ceramic material with high energy storage density and its preparation method, which can effectively reduce the pollution of lead zirconate titanate ceramics and improve the existing Insufficient energy storage density of lead-free bismuth sodium titanate-based ceramics, to obtain lead-free high-density energy storage ceramics with good performance

Method used

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  • Samarium-doped sodium bismuth titanate-bismuth strontium titanate ceramic material with high energy storage density and preparation method thereof
  • Samarium-doped sodium bismuth titanate-bismuth strontium titanate ceramic material with high energy storage density and preparation method thereof
  • Samarium-doped sodium bismuth titanate-bismuth strontium titanate ceramic material with high energy storage density and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A highly accumulated density of bismuth sodium titanate-titanate ceramic material, the bismuth titanate-titanate-titanate ceramic material according to ((Bi 0.5 NA 0.5 ) 0.7 (SR 0.7 BI 0.2 ) 0.3 ) 1-x SM x TIO 3 The chemical metering ratio weighing powder (where x = 0), ie (Bi 0.5 NA 0.5 ) 0.7 (SR 0.7 BI 0.2 ) 0.3 TIO 3 , Prepare it as follows:

[0032] (1) Raw material preparation: Purity (> 98%) TIO 2 , BI 2 O 3 NA 2 CO 3 , SRCO 3 SM 2 O 3 Place 3 hours to remove moisture in an oven at 100 ° C, weigh 8.0671 g of titanium oxide, 9.6976 g of cerium oxide, 1.8736 g of sodium carbonate, 3.1315 g of sodium carbonate (0.0001 g of oxidation), mixed with mixed material ;

[0033] (2) Ball mill: The mixture of the above steps (1), anhydrous ethanol, and zirconia grinding balls are filled with a ratio of 3: 1: 1 for 12 hours, and it is baked;

[0034] (3) Calcination ball milling: The slurry is placed in a 100 ° C oven, pressed into a blank after sizing, and lids the alumina crucib...

Embodiment 2

[0043] A highly accumulated density of bismuth sodium titanate-titanate ceramic material, the bismuth titanate-titanate-titanate ceramic material according to ((Bi 0.5 NA 0.5 ) 0.7 (SR 0.7 BI 0.2 ) 0.3 ) 1-x SM x TIO 3 Chemical metrics ratio weighing powder (where x = 0.005), is ((Bi) 0.5 NA 0.5 ) 0.7 (SR 0.7 BI 0.2 ) 0.3 ) 0.995 SM 0.005 TIO 3 , Prepare it as follows:

[0044] (1) Raw material preparation: Purity (> 98%) TIO 2 , BI 2 O 3 NA 2 CO 3 , SRCO 3 SM 2 O 3 Place 3 hours to remove moisture in an oven at 100 ° C, weigh 8.0672 g of titanium dioxide, 9.6983 g of cerium oxide, sodium carbonate 1.8649g, and oxide 0.0881 g (accuracy of 0.0001 g), mixed with mixed materials spare;

[0045] (2) Ball mill: The mixture of the above steps (1), anhydrous ethanol, and zirconia grinding balls are filled with a ratio of 3: 1: 1 for 12 hours, and it is baked;

[0046] (3) Calcination ball milling: The slurry is placed in a 100 ° C oven, pressed into a blank after sizing, and lids the alu...

Embodiment 3

[0056] A highly accumulated density of bismuth sodium titanate-titanate ceramic material, the bismuth titanate-titanate-titanate ceramic material according to ((Bi 0.5 NA 0.5 ) 0.7 (SR 0.7 BI 0.2 ) 0.3 ) 1-x SM x TIO 3 Chemical measuring ratio weighing powder (where x = 0.01), is ((Bi) 0.5 NA 0.5 ) 0.7 (SR 0.7 BI 0.2 ) 0.3 ) 0.99 SM 0.01 TIO 3 , Prepare it as follows:

[0057] (1) Raw material preparation: Purity (> 98%) TIO 2 , BI 2 O 3 NA 2 CO 3 , SRCO 3 SM 2 O 3 Place 3 hours to remove moisture in an oven at 100 ° C, weigh 8.0672 g of titanium dioxide, 9.6006 g of cerium oxide, 1.8548 g of sodium carbonate, 3.1002 g of sodium carbonate, 0.1761 g of oxidation, and mixed mixed materials spare;

[0058] (2) Ball mill: The mixture of the above steps (1), anhydrous ethanol, and zirconia grinding balls are filled with a ratio of 3: 1: 1 for 12 hours, and it is baked;

[0059] (3) Calcination ball milling: The slurry is placed in a 100 ° C oven, pressed into a blank after sizing, and ...

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Abstract

The invention provides a samarium-doped sodium bismuth titanate-bismuth strontium titanate ceramic material with high energy storage density and a preparation method thereof, and relates to the technical field of ceramic capacitor material processing. The stoichiometric ratio of the samarium-doped sodium bismuth titanate-bismuth strontium titanate ceramic material with the high energy storage density is ((Bi[0.5]Na[0.5])[0.7](Sr[0.7]Bi[0.2])[0.3])[1-x ]Sm[x])TiO[3], and x is greater than or equal to 0 and less than or equal to 0.03; the preparation process of the ceramic material mainly comprises the steps of raw material preparation, ball milling pulping, calcination ball milling, forming treatment and the like. The defects in the prior art are overcome, the prepared ceramic material is high in density and few in surface air gap, the energy storage performance of the ceramic obtained through a high-temperature quenching process is improved to 1.25 J / cm<3> from low energy storage in the background technology, the energy storage potential is also improved to 1.4 J*cm<-2>*kV<-1>, and the ceramic shows obvious performance advantages; and in addition, the energy storage density is stabilized between + / -5% within the temperature range of 20-120 DEG C, and the material can be applied to high-temperature environment energy storage devices.

Description

Technical field [0001] The present invention relates to the field of ceramic capacitance material processing technology, and more particularly to a highly accumulated density of tantalinate - titanate ceramic material and preparation method thereof. Background technique [0002] Ceramic capacitors are widely used in modern electronic technology to pulse power systems and mobile electronic devices, have the advantages of high storage density and fast discharge velocity. At present, the devices on the market are mainly concentrated in lead-containing ceramic systems based on lead zirconate titanate, but the serious pollution of lead to the environment has urged people to find alternatives for lead-free energy storage ceramics. [0003] In recent years, kettate sodium titanate (Bi 0.5 NA 0.5 TIO 3 , BNT) ceramic can be maintained at a higher saturation polarization value (P m While lowering the remaining polarization value (P r ), Thereby increasing the energy storage density and it...

Claims

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Application Information

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IPC IPC(8): C04B35/475C04B35/622
CPCC04B35/475C04B35/622C04B2235/3201C04B2235/3213C04B2235/3224
Inventor 赵年顺黄锋曹建华李铮李成周云艳
Owner HUANGSHAN UNIV
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