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Novel BCZT-based energy storage ceramic material and preparation method and application thereof

A ceramic material, energy storage technology, applied in fixed capacitor parts, fixed capacitors, laminated capacitors, etc., can solve the problems of large dielectric loss, energy storage efficiency lower than 75%, less research, etc., and achieve low dielectric loss. , Improve the energy storage density and energy storage efficiency, the effect of low sintering temperature

Active Publication Date: 2017-10-13
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

[0005] (Ba 0.85 Ca 0.15 )(Zr 0.10 Ti 0.90 )O 3 (BCZT) due to its higher d 33 It has always attracted people's attention, but its research on energy storage is less. Since BCZT is a ferroelectric phase at room temperature, the dielectric loss is large, and the dielectric constant decreases with the increase of the electric field, so its energy storage density is only 0.20-0.30 J / cm 3 , and the energy storage efficiency is less than 75%

Method used

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  • Novel BCZT-based energy storage ceramic material and preparation method and application thereof
  • Novel BCZT-based energy storage ceramic material and preparation method and application thereof

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preparation example Construction

[0034] The invention relates to a BCZT-based energy storage ceramic with the characteristics of high energy storage density, moderate dielectric constant, high breakdown strength, small dielectric loss, good temperature and frequency stability and a preparation method thereof. In the present invention, utilize solid phase synthesis (Ba 0.85 Ca 0.15 )(Zr 0.10 Ti 0.90 ) 1-x (Ni y Nb z ) x o 3 Powder, wherein, 0.1≤x≤0.8, 00.85 Ca 0.15 )(Zr 0.10 Ti 0.90 ) 1-x (Ni y Nb z ) x o 3 Energy storage ceramic materials. The energy storage ceramics of the present invention can be used in the manufacture of energy storage capacitors, such as energy storage multilayer ceramic capacitors, and expand the application field of barium calcium zirconate titanate (BCZT) ceramic materials in energy storage, which is conducive to promoting high energy storage The application and development of energy density ceramic technology has a good application prospect. In addition, the method o...

Embodiment 1

[0050] The energy storage ceramic material consists of:

[0051] (Ba 0.85 Ca 0.15 )(Zr 0.10 Ti 0.90 ) 0.9 (Ni 1 / 3 Nb 2 / 3 ) 0.1 o 3 (x=0.1, y=1 / 3, z=2 / 3)

[0052] (1) Calculate the required BaCaO according to the composition of the above chemical formula 3 , CaCO 3 , ZrO 2 、TiO 2 、Ni 2 o 3 and Nb 2 o 5 Quality, mixed by wet ball milling method, mixed for 24 hours according to the mass ratio of raw materials: balls: deionized water = 1:1.2:1.5, so that all components were mixed evenly. After drying, pass through a 40-mesh sieve, briquette in an air atmosphere, raise the temperature to 1250°C at a rate of 2°C / min, and keep it warm for 2 hours. The synthetic composition is (Ba 0.85 Ca 0.15 )(Zr 0.10 Ti 0.90 ) 0.9 (Ni 1 / 3 Nb 2 / 3 ) 0.1 o 3 (x=0.1, y=1 / 3, z=2 / 3) powder;

[0053] (2) Into the powder synthesized in step (1). According to the material: ball: deionized water = 1:2:0.8 ratio of wet fine grinding for 48 hours, discharge and dry, pass through a 40-m...

Embodiment 2

[0063] The energy storage ceramic material consists of:

[0064] (Ba 0.85 Ca 0.15 )(Zr 0.10 Ti 0.90 ) 0.8 (Ni 1 / 3 Nb 2 / 3 ) 0.2 o 3 (x=0.2, y=1 / 3, z=2 / 3)

[0065] (1) repeat the preparation method of embodiment 1 by above-mentioned formula and obtain present embodiment;

[0066] (2) Carry out XRD test to present embodiment, test result sees figure 1 ;

[0067] (3) carry out surface SEM observation to present embodiment, Fig. 2 (b) has provided the surface topography structure Fig. 2 of present embodiment ceramic sample;

[0068] (4) Observations of the dielectric thermogram and the dielectric spectrum were carried out to the ceramic sample, and the test results are shown in Fig. 3 and Fig. 4;

[0069] (5) The hysteresis loop was measured at room temperature for the ceramic sample of this embodiment, and the test results are shown in Figure 5 ;

[0070] (6) Test the energy storage density and energy storage efficiency under different electric fields for the cerami...

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Abstract

The invention relates to a novel BCZT-based energy storage ceramic material and a preparation method and application thereof. The BCZT-based energy storage ceramic material adopts the general formula as follows: (Ba0.85Ca0.15)(Zr0.10Ti0.90)1-x (NiyNbz)xO3, wherein x is greater than or equal to 0.1 and smaller than or equal to 0.8, y is greater than or equal to 0 and smaller than or equal to 1.0, and z is greater than or equal to 0 and smaller than or equal to 1.0. The (Ba0.85Ca0.15)(Zr0.10Ti0.90)1-x (NiyNbz)xO3 has high energy storage density, and further has the characteristics of low dielectric loss, a moderate dielectric constant, high breakdown strength, good temperature and frequency stability and the like.

Description

technical field [0001] The invention belongs to the field of functional ceramics, and specifically relates to an energy storage ceramic with high energy storage density, low dielectric loss, moderate dielectric constant, high breakdown strength, and good temperature and frequency stability based on BCZT ceramics and its According to the preparation method, the energy storage ceramic can be used for energy storage capacitors. Background technique [0002] High energy storage density ceramics are the key materials for making small and large capacitors. Due to their advantages such as fast charge and discharge speed, strong anti-cycle aging ability, stable performance under extreme conditions such as high temperature and high pressure, they are used in electric vehicles, high-power electronic devices , pulse power power supply, new energy and smart grid systems and other basic scientific research and engineering technology fields have broad application prospects. [0003] Ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/622C04B35/638C04B41/88H01G4/30H01G4/12
CPCC04B35/4682C04B35/622C04B35/638C04B41/5116C04B41/88C04B2235/3208C04B2235/3246C04B2235/3251C04B2235/3279C04B2235/6562C04B2235/6567C04B2235/76H01G4/1263H01G4/30C04B41/4539C04B41/0072
Inventor 董显林周明星梁瑞虹
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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