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Preparation method for lead-based anti-ferroelectric nanometer material and lead-based anti-ferroelectric ceramic energy storage material

A nano-material and anti-ferroelectric technology, applied in the field of electronic materials and devices, can solve the problems of high reaction phase formation temperature, high synthesis temperature, large crystal grains, etc., and achieve the effect of small particle size and uniform distribution

Inactive Publication Date: 2012-08-22
TONGJI UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional solid-phase preparation of ceramics has certain advantages, such as low cost, easy process control, and low environmental requirements; but its shortcomings are also obvious. First, the synthesis temperature is high (this is because simple mechanical mixing is impossible. Each oxide component is mixed evenly at the molecular and atomic level, so that the temperature of the phase reaction between the elements is too high), secondly, the local components are not uniform (the reason is also because of the inability to mix uniformly), and thirdly, the crystal of the porcelain The particles are relatively large, which will directly deteriorate the pressure resistance of ceramics
In addition, for lead-based antiferroelectric ceramic materials, the volatilization of PbO will lead to the formation of pyrochlore phase

Method used

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  • Preparation method for lead-based anti-ferroelectric nanometer material and lead-based anti-ferroelectric ceramic energy storage material
  • Preparation method for lead-based anti-ferroelectric nanometer material and lead-based anti-ferroelectric ceramic energy storage material
  • Preparation method for lead-based anti-ferroelectric nanometer material and lead-based anti-ferroelectric ceramic energy storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] a. Weigh 20g NH 4 Cl was dissolved in 300ml of deionized water, according to the mass ratio of Pb(NO 3 ) 2 :NH 4 Cl=3.1:1, to NH 4 Add 62g Pb(NO 3 ) 2 . Stir for 30 minutes, then filter out the precipitate, take the filtrate to obtain a transparent solution, then add concentrated ammonia water to the solution until the pH of the solution is 9.0, filter out the precipitate, finally add 4.5g PEG6000, stir until completely dissolved, and obtain NH 4 NO 3 -NH 4 OH buffer solution A.

[0054] b. According to the chemical formula Pb 0.97 La 0.02 (Zr 0.75 Ti 0.08 sn 0.17 )O 3 The stoichiometric ratio of Pb, La, Zr, Ti and Sn elements in the medium weighs Pb(Ac) 2 ·3H 2 O or Pb(NO 3 ) 2 , La(NO 3 ) 3 , Zr(NO 3 ) 4 ·5H 2 O, TiCl 4 , SnCl 4 ·5H 2 O, 30g total, then Pb(Ac) 2 ·3H 2 O or Pb(NO 3 ) 2 In excess of 1.5% by weight, La(NO 3 ) 3 The weight of excess 0.6%, Zr(NO 3 ) 4 ·5H 2 The weight of O is in excess of 4%, SnCl 4 ·5H 2 An excess of 3...

Embodiment 2

[0062] a. Weigh 20g NH 4 Cl was dissolved in 300ml of deionized water, according to the mass ratio of Pb(NO 3 ) 2 :NH 4 Cl=3.1:1, to NH 4 Add 62g Pb(NO 3 ) 2 . Stir for 30 minutes, then filter out the precipitate, take the filtrate to obtain a transparent solution, then add concentrated ammonia water to the solution until the solution pH=9.0, filter out the precipitate, finally add 7.5g PEG6000, stir until completely dissolved, and obtain NH 4 NO 3 -NH 4 OH buffer solution A.

[0063] b. According to the chemical formula Pb 0.97 La 0.02 (Zr 0.54 Ti 0.08 sn 0.38 )O 3 The stoichiometric ratio of Pb, La, Zr, Ti and Sn elements in the medium weighs Pb(Ac) 2 ·3H 2 O or Pb(NO 3 ) 2 , La(NO 3 ) 3 , Zr(NO 3 ) 4 ·5H 2 O, TiCl 4 , SnCl 4 ·5H 2 O, 40g total, then Pb(Ac) 2 ·3H 2 O or Pb(NO 3 ) 2 In excess of 1.5% by weight, La(NO 3 ) 3 The weight of excess 0.6%, Zr(NO 3 ) 4 ·5H 2 The weight of O is in excess of 4%, SnCl 4 ·5H 2 An excess of 3% by weigh...

Embodiment 3

[0072] Preparation of Pb 0.97 La 0.02 (Zr 0.60 Ti 0.05 sn 0.35 )O 3 Antiferroelectric nanopowder materials and antiferroelectric ceramic energy storage materials:

[0073] a. Weigh 20gNH 4 Cl was dissolved in 300ml of deionized water, according to the mass ratio of Pb(NO 3 ) 2 :NH 4 Cl=3.1:1, to NH 4 Add 62g Pb(NO 3 ) 2 . Stir for 30 minutes, then filter out the precipitate, take the filtrate to obtain a transparent solution, then add concentrated ammonia water to the solution until the pH of the solution is 9.0, filter out the precipitate, finally add 7.0g PEG6000, stir until completely dissolved, and obtain NH 4 NO 3 -NH 4 OH buffer solution A.

[0074] b. According to the chemical formula Pb 0.97 La 0.02 (Zr 0.60 Ti 0.05 sn 0.35 )O 3 The stoichiometric ratio of Pb, La, Zr, Ti and Sn elements in the medium weighs Pb(Ac) 2 ·3H 2 O or Pb(NO 3 ) 2 , La(NO 3 ) 3 , Zr(NO 3 ) 4 ·5H 2 O, TiCl 4 , SnCl 4 ·5H 2 O, 40g total, then Pb(Ac) 2 ·3H 2 O or...

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Abstract

The invention relates to a preparation method for a lead-based anti-ferroelectric nanometer material and a lead-based anti-ferroelectric ceramic energy storage material and belongs to the technical field of electronic materials and devices. According to the preparation method, an ammonium nitrate-ammonia water buffered solution is used as a precipitator, and thus, a prepared lead-based anti-ferroelectric nanometer powder is small in particle size and even in distribution, and the particle size distribution of the lead-based anti-ferroelectric nanometer powder is shown by the following formula: D(0.5)=0.061mum, D(0.9)=0.111mum. The breakdown field strength of the block ceramic energy storage material prepared from the lead-based anti-ferroelectric nanometer powder reaches up to 145kV / cm, and the energy storage density reaches 2.52j / cm<3>. The ceramic energy storage material can be widely used for the technical field of energy storage capacitors, high-power pulsed electrical sources, high-speed trains, electric automobiles, kinetic-energy weapons and the like.

Description

technical field [0001] The invention relates to the preparation of a lead-based antiferroelectric nanometer material and a lead-based antiferroelectric ceramic energy storage material, belonging to the technical field of electronic materials and devices. Background technique [0002] The development and application of high energy storage density dielectric materials is only more than 50 years old. According to the definition of classical electromagnetic theory, its energy storage density refers to the electric energy contained in a unit volume, and the unit is J / cm 3 . The study found that the energy storage density is closely related to the applied electric field strength: the greater the applied electric field strength, the greater the measured energy storage density. When the applied electric field is close to the breakdown field strength of the medium, the energy storage density of the material tends to be the largest. The traditional solid-phase preparation of ceramic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/493C04B35/626
Inventor 杨同青李刚王瑾菲张清风姚熹
Owner TONGJI UNIV
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