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Quaternary ceramic material with high energy conversion coefficient for piezoelectric energy collection and preparation

A technology of piezoelectric ceramics and piezoelectric energy, which is applied in the field of piezoelectric ceramic materials, can solve problems such as difficulty in obtaining piezoelectric ceramic materials and limiting the improvement of the conversion coefficient, and achieves good industrial application prospects, low cost, and improved electromechanical conversion efficiency Effect

Active Publication Date: 2019-03-01
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piezoelectric charge constant (d 33 ) and relative permittivity (ε r ) tends to show a simultaneous increase or decrease trend, according to the above formula (1-1), this synergistic change severely limits the conversion coefficient (d 33 g 33 ), it is difficult to obtain excellent piezoelectric ceramic materials to meet the application requirements of high-performance piezoelectric energy harvesters

Method used

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  • Quaternary ceramic material with high energy conversion coefficient for piezoelectric energy collection and preparation
  • Quaternary ceramic material with high energy conversion coefficient for piezoelectric energy collection and preparation
  • Quaternary ceramic material with high energy conversion coefficient for piezoelectric energy collection and preparation

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Embodiment 1

[0039] Embodiment 1 (i.e. comparative example):

[0040] First according to the matrix chemical formula 0.2Pb(Zn 1 / 3 Nb 2 / 3 )O 3 -0.8Pb(Zr 1 / 2 Ti 1 / 2 )O 3 (Abbreviation 0.2PZN-0.8PZT) weigh Nb 2 o 5 , Pb 3 o 4 , ZrO 2 、TiO 2 and ZnO, and ball milled in ethanol for 24 hours. The mixture was dried and calcined at 850° C. for 2 hours, ball milled in ethanol and dried again to obtain 0.2PZN-0.8PZT ceramic powder. Then weigh 0.2PZN-0.8PZT powder, mix according to the ratio of 10g powder and 1.2mL binder, press the molded product at 100MPa, remove the binder at 560°C, and then sinter at 950-1150°C, preferably Sintering at 1000°C for 2 hours to obtain pure 0.2PZN-0.8PZT ceramics.

Embodiment 2

[0042] First according to the matrix chemical formula 0.192Pb(Zn 1 / 3 Nb 2 / 3 )O 3 -0.008Pb(In 1 / 2 Nb 2 / 3 )O 3 -0.8Pb(Zr 1 / 2 Ti 1 / 2 )O 3 (Abbreviation 0.192PZN-0.008PIN-0.8PZT) weighing Nb 2 o 5 、In 2 o 3 , Pb 3 o 4 , ZrO 2 、TiO 2 and ZnO, and ball milled in ethanol for 24 hours. The mixture was dried and calcined at 850° C. for 2 hours, ball milled in ethanol and dried again to obtain 0.192PZN-0.008PIN-0.8PZT ceramic powder. Then weigh 0.192PZN-0.008PIN-0.8PZT powder, mix according to the ratio of 10g powder and 1.2mL binder, and press the molded product at 100MPa. Sintering, preferably at 1000°C, for 2 hours to obtain 0.192PZN-0.008PIN-0.8PZT ceramics.

Embodiment 3

[0044] According to 0.184Pb(Zn 1 / 3 Nb 2 / 3 )O 3 -0.016Pb(In 1 / 2 Nb 2 / 3 )O 3 -0.8Pb(Zr 1 / 2 Ti 1 / 2 )O 3 (abbreviation 0.184PZN-0.016PIN-0.8PZT) composition. Others are with embodiment 2.

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Abstract

The invention discloses a quaternary ceramic material with a high energy conversion coefficient for piezoelectric energy collection and preparation, and belongs to the field of piezoelectric ceramic materials. The basic chemical composition of the ceramic material is (0.2-x)PZN-xPIN-0.8PZT, and x is 0.000-0.100. ZnO, In2O3, Nb2O5, Pb3O4, ZrO2 and TiO2 are used as raw materials, and the steps of wet milling, drying, granulating, press forming and sintering are adopted. The quaternary ceramic material with the high energy conversion coefficient for the piezoelectric energy collection and the preparation realize effective regulation and control over the non-coordinated variation trend of a piezoelectric charge constant and an dielectric constant, provide a brand new design idea for further developing the high-performance piezoelectric energy collecting material, and play a significant role to promote the great enhancement of the electromechanical conversion performance and industrial application of piezoelectric energy collecting devices.

Description

technical field [0001] The invention belongs to the field of piezoelectric ceramic materials, and in particular relates to a quaternary piezoelectric ceramic material with high conversion coefficient applied to piezoelectric energy collection and a preparation method thereof. Background technique [0002] In recent years, wireless sensor networks have developed rapidly, especially in environmental control monitoring systems, embedded systems, military security application systems, and wild animal tracking devices. Due to the high cost of the traditional wiring power supply or battery replacement method of wireless sensors, how to realize the self-power supply of wireless sensors is a research hotspot in various countries in the world today. However, new energy sources such as solar energy and wind energy are too dependent on the environment, and they cannot be well applied in the self-power supply of wireless sensors. Piezoelectric energy harvesting technology uses the posi...

Claims

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Application Information

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IPC IPC(8): C04B35/493C04B35/622
CPCC04B35/493C04B35/622C04B2235/3251C04B2235/3284C04B2235/3286C04B2235/656C04B2235/6567C04B2235/96
Inventor 侯育冬闫晶于肖乐郑木鹏朱满康
Owner BEIJING UNIV OF TECH