Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Energy storage efficiency enhanced high-energy storage lead-free ferroelectric ceramic material and preparation method thereof

A technology of energy storage efficiency and ferroelectric ceramics, applied in the field of functional materials and devices, which can solve the problems of low breakdown field strength and effective energy storage density

Active Publication Date: 2021-06-08
HANGZHOU DIANZI UNIV
View PDF13 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of low breakdown field strength and effective energy storage density of existing energy storage ceramic materials, and provide a lead-free ferroelectric ceramic material with enhanced energy storage efficiency and high energy storage and a preparation method thereof. CaTiO with titanite structure 3 Introduced into sodium niobate-based ceramics for doping modification, high breakdown field strength and high energy storage efficiency are obtained at the same time, which not only expands the research direction of doping modification, but also prepares a promising lead-free energy storage ceramic materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Energy storage efficiency enhanced high-energy storage lead-free ferroelectric ceramic material and preparation method thereof
  • Energy storage efficiency enhanced high-energy storage lead-free ferroelectric ceramic material and preparation method thereof
  • Energy storage efficiency enhanced high-energy storage lead-free ferroelectric ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The preparation method of the energy storage efficiency enhanced high energy storage lead-free ferroelectric ceramic material comprises the following preparation steps:

[0051] (1) Primary ingredients: with Na 2 CO 3 Powder, Nb 2 o 5 Powder, CaCO 3 Powder, TiO 2 Powder as raw material, according to the general formula NaNbO 3 and CaTiO 3 The stoichiometry of Na, Nb, Ca and Ti in is carried out batching respectively, obtains mixture; Na 2 CO 3 Powder, Nb 2 o 5 Powder, CaCO 3 Powder, TiO 2 The purity of the powder is greater than 99%.

[0052] (2) Primary ball milling: add dehydrated alcohol equal to the amount of the mixture to the above mixture, and continue ball milling for 12-24 hours, so that the powder is mixed evenly to form a slurry;

[0053] (3) Drying: put the above slurry in a constant temperature oven at 78-80°C to dry, remove absolute ethanol, and grind it in a mortar to obtain powder;

[0054] (4) Tablet pre-firing: NaNbO 3 and CaTiO 3 The p...

Embodiment 1

[0060] A class of lead-free ferroelectric ceramic materials with enhanced energy storage efficiency and high energy storage, whose general chemical formula is: (1-x)NaNbO 3 -xCaTiO 3 , x=0.2.

[0061] The preparation method of a lead-free ferroelectric ceramic material with enhanced energy storage efficiency and high energy storage specifically includes the following preparation steps:

[0062] (1) Primary ingredients: with Na 2 CO 3 Powder, Nb 2 o 5 Powder, CaCO 3 Powder, TiO 2 Powder is raw material (purity greater than 99%), according to the general formula NaNbO 3 and CaTiO 3 The stoichiometry of Na, Nb, Ca and Ti in is carried out batching respectively;

[0063] (2) Primary ball milling: add an amount of absolute ethanol equal to the mixture to the above mixture, and continue ball milling for 12 hours. Mix the powder uniformly to form a slurry, which can further improve the comprehensive performance of ceramic materials;

[0064] (3) Drying: put the above slurr...

Embodiment 2

[0074] A class of lead-free ferroelectric ceramic materials with enhanced energy storage efficiency and high energy storage, whose general chemical formula is: (1-x)NaNbO 3 -xCaTiO 3 , x=0.4.

[0075] The preparation method of a lead-free ferroelectric ceramic material with enhanced energy storage efficiency and high energy storage specifically includes the following preparation steps:

[0076] (1) Primary ingredients: with Na 2 CO 3 Powder, Nb2 o 5 Powder, CaCO 3 Powder, TiO 2 Powder is raw material (purity greater than 99%), according to the general formula NaNbO 3 and CaTiO 3 The stoichiometry of Na, Nb, Ca and Ti in is carried out batching respectively;

[0077] (2) One-time ball milling: add an amount of absolute ethanol equal to the mixture to the above mixture, and continue ball milling for 24 hours. Mix the powder uniformly to form a slurry, which can further improve the comprehensive performance of ceramic materials;

[0078] (3) Drying: put the above slurry...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
strengthaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of functional materials and devices, discloses an energy storage efficiency enhanced high-energy storage lead-free ferroelectric ceramic material and a preparation method thereof, and aims at solving the problems of low breakdown field strength and low effective energy storage density of an existing energy storage ceramic material. The chemical composition of the ceramic is (1-x) NaNbO3-xCaTiO3, and x is more than or equal to 0.15 and less than or equal to 0.9. Preferably, x equals 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9. CaTiO3 of a perovskite structure is introduced into sodium niobate-based ceramic for doping modification for the first time, high energy storage density and high efficiency are obtained while high breakdown field strength is achieved, the research direction of doping modification is expanded, and the lead-free energy storage ceramic material with application prospects is prepared.

Description

technical field [0001] The invention relates to the field of functional materials and devices, in particular to a lead-free ferroelectric ceramic material with enhanced energy storage efficiency and high energy storage and a preparation method thereof. Background technique [0002] In recent years, with the miniaturization and integration of electronic components, this has put forward higher requirements for electronic materials. Compared with energy storage devices such as batteries and chemical capacitors, dielectric capacitors have the advantages of high power density, fast discharge speed, and long service life. Bulk ceramic dielectric capacitors have higher temperature stability and total energy storage. It can be widely used in high-power pulse weapons, electromagnetic launchers, energy storage and inverter equipment for hybrid vehicles. [0003] At present, the commercial energy storage ceramic materials are mainly concentrated in lead-based materials. However, with ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/465C04B41/88
CPCC04B35/495C04B35/465C04B41/88C04B41/009C04B41/5116C04B2235/442C04B2235/96
Inventor 白王峰刘继康元勇军吴诗婷裴浪鲍亮张怀伟陈逸凡
Owner HANGZHOU DIANZI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com