Piezoelectric ceramic material applicable to energy collecting devices and preparation method thereof

A technology of piezoelectric ceramics and energy harvesting, applied in the field of piezoelectric ceramic materials, can solve the problems of low performance that cannot meet the application requirements of energy harvesting devices, large-scale application, cumbersome manufacturing process, etc., to improve electromechanical conversion efficiency and significantly economical and social value, easy-to-operate effect

Inactive Publication Date: 2013-01-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the materials used in piezoelectric energy harvesting devices are mainly piezoelectric single crystals, but the manufacturing process is cumbersome, the cost is high, and it cannot be applied on a large scal

Method used

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  • Piezoelectric ceramic material applicable to energy collecting devices and preparation method thereof
  • Piezoelectric ceramic material applicable to energy collecting devices and preparation method thereof
  • Piezoelectric ceramic material applicable to energy collecting devices and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to chemical formula Pb 0.9 Sr 0.1 (Zn 1 / 3 Nb 2 / 3 Zr 0.30 Ti 0.50 )O 3 Weighing ZnNb 2 O5, Pb 3 O4, ZrO 2 、TiO 2 and SrCO 3 , and ball milled in ethanol for 24 hours. After the mixture is dried, it is calcined at 850°C for 2 hours, ball milled in ethanol again, mixed according to the ratio of 10g powder and 1.5mL binder, and the molded product is pressed at 100MPa, and the binder is removed from the molded product at 560°C , and sintered at 1050°C for 2 hours to obtain ceramics.

Embodiment 2

[0030] According to chemical formula Pb 0.92 Sr 0.08 (Zn 1 / 3 Nb 2 / 3 Zr 0.35 Ti 0.45 )O 3 Weighing ZnNb 2 O5, Pb 3 O4, ZrO 2 、TiO 2 and SrCO 3 , and doped with 0.5wt% CoCO of the matrix material 3 , the calcination temperature is 900°C,

[0031] The sintering temperature is 1100°C. Others are with embodiment 1.

Embodiment 3

[0033] According to chemical formula Pb 0.95 Sr 0.05 (Zn 1 / 3 Nb 2 / 3 Zr 0.40 Ti 0.40 )O 3 Weighing ZnNb 2 O5, Pb 3 O4, ZrO 2 、TiO 2 and SrCO 3 , and doped with 0.8wt% CoCO of the matrix material 3 , the calcination temperature is 800°C,

[0034] The sintering temperature is 1000°C. Others are with embodiment 1.

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PUM

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Abstract

The invention relates to a piezoelectric ceramic material applicable to energy collecting devices and a preparation method thereof, belonging to the field of piezoelectric ceramic materials. The chemical composition of the matrix of the ceramic material is PbxSr1-x(Zn1/3Nb2/3ZryTi0.8-y)O3, and z wt% of CoCO3 is doped in the matrix material, wherein x is 0.90-1.00, y is 0.30-0.50, and z is 0.00-1.00. The preparation method comprises the following steps: by using ZnO, Nb2O5, Pb3O4, SrCO3, ZrO2, TiO2 and CoCO3 as raw materials, carrying out wet milling, drying, calcining, carrying out secondary ball milling, granulating, carrying out pressure molding, and sintering. The invention is applicable to energy collecting devices, can effectively recycle and reutilize waste energy, has the advantages of energy saving, environmental protection and high safety, and has obvious economic and social value.

Description

technical field [0001] The invention belongs to the field of piezoelectric ceramic materials, and in particular relates to a high-energy-density piezoelectric ceramic material applied to energy collection devices and a preparation method thereof. Background technique [0002] Energy and the environment are two major themes that human beings are concerned about in the 21st century. Due to the year-by-year consumption of non-renewable resources, energy issues have attracted the attention of governments, academia and the general public, and the development of new energy has become an important research topic in today's world. How to collect and convert waste energy in the environment into reusable electric energy has attracted much attention as one of the main directions of new energy development. Among them, piezoelectric energy harvesting devices are based on the positive piezoelectric effect of piezoelectric materials, which convert mechanical energy generated in the enviro...

Claims

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Application Information

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IPC IPC(8): C04B35/497C04B35/622
Inventor 侯育冬郑木鹏朱满康刘晶冰王如志张铭宋雪梅汪浩严辉
Owner BEIJING UNIV OF TECH
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