La-doped lead zirconate stannate titanate anti-ferroelectric ceramics with high energy storage efficiency and preparation method thereof

A technology of energy storage efficiency and antiferroelectricity, which is applied in the field of functional ceramics to achieve the effects of small electric hysteresis, long energy storage density, and high energy storage density

Inactive Publication Date: 2015-06-24
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0009] The present invention aims to overcome the performance defects of existing antiferroelectric ceramic materials in terms of energy storage efficiency, etc., and the present invention provides a high energy storage efficiency lanthanum-doped zirconium titanium lead stannate antiferroelectric ceramic and its preparation method

Method used

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  • La-doped lead zirconate stannate titanate anti-ferroelectric ceramics with high energy storage efficiency and preparation method thereof
  • La-doped lead zirconate stannate titanate anti-ferroelectric ceramics with high energy storage efficiency and preparation method thereof
  • La-doped lead zirconate stannate titanate anti-ferroelectric ceramics with high energy storage efficiency and preparation method thereof

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preparation example Construction

[0037] The preparation method of PLZST antiferroelectric ceramic material of the present invention, comprises the steps:

[0038] (a) with Pb 3 o 4 , ZrO 2 、TiO 2 , SnO 2 , La 2 o 3 The powder is used as raw material, according to (Pb 0.97 La 0.02 )(Zr 0.58 sn 0.42-x Ti x )O 3 The stoichiometric ratio of the corresponding elements is prepared, and mixed by wet ball milling; after drying, it is compacted, and after pre-fired, a ceramic block is obtained;

[0039] In the mixing of wet ball milling method described in step (a), according to the mass ratio of raw material: ball: water = 1: (1.4 ~ 1.8): (0.7 ~ 1.0), mix for 5 ~ 7 hours, wherein the ball milling medium is steel ball Or agate ball, the water is deionized water;

[0040] The sintering conditions are as follows: the heating rate is lower than 2°C / min to 820-880°C, and the temperature is kept for 1-3 hours;

[0041] (b) finely grinding the ceramic blocks obtained in step (a) by wet ball milling, adding a b...

Embodiment 1

[0054] The antiferroelectric ceramic material is composed of: Pb 0.97 La 0.02 (Zr 0.3 sn 0.6 Ti 0.1 )O 3

[0055] (1) Calculate the composition Pb in the powder raw material according to the composition of the above chemical formula 3 o 4 , La 2 o 3 , ZrO 2 、TiO 2 and SnO 2 The mass is prepared according to the composition ratio, mixed by wet ball milling, and mixed for 7 hours according to the mass ratio of raw materials: ball: water = 1:1.6:0.9, so that the components are mixed evenly. After drying, pass through a 40-mesh sieve, briquette in an air atmosphere, raise the temperature to 850°C at a rate of 2°C / min, and keep it warm for 2 hours to synthesize Pb 0.97 La 0.02 (Zr 0.58 sn 0.33 Ti 0.09 )O 3 ceramic blocks;

[0056] (2) smash the ceramic block obtained in step (1), pass through a 30-mesh sieve, and finely grind for 24 hours by wet ball milling, dry the ceramic powder after fine grinding, and then add 7wt.% of the powder weight PVA binder, granulate...

Embodiment 2

[0061] The material composition is: Pb 0.97 La 0.02 (Zr 0.22 sn 0.68 Ti 0.1 )O 3

[0062] Repeat the preparation method of Example 1 according to the above formula to prepare ceramic elements;

[0063] The measurement of the hysteresis loop under room temperature was carried out to the ceramic element of the present embodiment, and energy storage density, energy storage efficiency calculation, the results are shown in Table 1, figure 2 and Figure 4 .

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Abstract

The invention relates to La-doped lead zirconate stannate titanate anti-ferroelectric ceramics with high energy storage efficiency and a preparation method thereof. The constitutional chemical formula of the anti-ferroelectric ceramics is (Pb1-1.5xLax)(ZrySn0.9-yTi0.1)O3, wherein x is greater than or equal to 0.02 and smaller than or equal to 0.04, and y is greater than or equal to 0.1 and smaller than or equal to 0.5. According to the preparation method, the anti-ferroelectric ceramics are prepared with a tradional preparation method of electronic ceramics, have the energy storage characteristics of small electric hysteresis and high energy storage efficiency, and have very important significance in developing a high-pressure impulse power capacitor with high energy storage density and high energy storage efficiency.

Description

technical field [0001] The invention belongs to the field of functional ceramics and relates to an antiferroelectric energy storage ceramic material, in particular to an antiferroelectric ceramic material and a ceramic element with high energy storage efficiency. Background technique [0002] Since the 1970s, with the continuous development of electron beam, laser and other technologies, pulse power technology has been widely used in high-tech, civil and other fields. The energy storage system is the main component of the pulse power device. Capacitor energy storage has fast energy release speed, flexible combination, mature technology and low price, and has become the most widely used energy storage device at present. In September 2009, many scientific research institutions have listed the pulse power application capacitor project as their key research plan. [0003] The dielectric materials used for pulse capacitors mainly include linear ceramics, ferroelectric ceramics a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/493C04B35/622
Inventor 王根水刘振陈学锋董显林曹菲
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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