Layered composite relaxor ferroelectric material capable of simultaneously improving energy storage density and energy storage efficiency and preparation method thereof

A layered composite and ferroelectric material technology, applied in the direction of fixed capacitor electrodes, fixed capacitor components, fixed capacitor dielectrics, etc., can solve the problems of poor energy storage density and energy storage efficiency, and achieve the benefits of energy storage, The effect of high energy storage efficiency and high saturation polarization value

Active Publication Date: 2021-11-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to improve the problems of poor energy storage density and energy storage efficiency of current relaxor ferroelectric capacitors, this application provides a layered composite relaxor ferroelectric material that can simultaneously improve energy storage density and energy storage efficiency and its preparation method

Method used

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  • Layered composite relaxor ferroelectric material capable of simultaneously improving energy storage density and energy storage efficiency and preparation method thereof
  • Layered composite relaxor ferroelectric material capable of simultaneously improving energy storage density and energy storage efficiency and preparation method thereof
  • Layered composite relaxor ferroelectric material capable of simultaneously improving energy storage density and energy storage efficiency and preparation method thereof

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Experimental program
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Embodiment 1

[0063] Such as figure 1 As shown, a layered composite relaxor ferroelectric material that can simultaneously improve energy storage density and energy storage efficiency includes: a rigid substrate, a lower electrode layer formed on the rigid substrate, and a layer formed on the lower electrode layer layer-like composite relaxation ferroelectric layer, and an upper electrode layer formed on the layer-like composite relaxation ferroelectric layer.

[0064] The layered composite relaxor ferroelectric layer is a multilayer structure film with relaxor ferroelectricity grown on the basis of the lower electrode layer. The multilayer structure film includes a lower layer and an upper layer that are sequentially stacked and grown on the lower electrode layer. The multilayer structure film consists of The lower layer and the upper layer are formed by repeating multi-period superimposition, and in this embodiment, the repeating period N=10.

[0065] Such as figure 2 As shown, the pre...

Embodiment 2

[0083] The difference from Example 1 is that the fixed number of rounds for bombarding the BTO target in step C is 240 rounds, the fixed number of rounds for bombarding the STO target in step D is 40 rounds, and the process of repeating steps C to D is repeated 50 times to obtain a repeated BTO-STO layered composite relaxor ferroelectric material with period N=50.

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Abstract

The invention discloses a layered composite relaxor ferroelectric material capable of simultaneously improving energy storage density and energy storage efficiency and a preparation method of the layered composite relaxor ferroelectric material. The layered composite relaxor ferroelectric material comprises a rigid substrate, a lower electrode layer formed on the rigid substrate, a layered composite relaxor ferroelectric layer formed on the lower electrode layer and an upper electrode layer formed on the layered composite relaxor ferroelectric layer, wherein the layered composite relaxor ferroelectric layer is a multilayer structure film with relaxor ferroelectricity, and the multilayer structure film comprises a lower layer and an upper layer which are stacked and grown on the lower electrode layer in a repeated multi-cycle manner in sequence. The preparation method comprises the steps of selecting an STO substrate, generating an SRO layer on the STO substrate, generating multiple BTO-STO layers on the SRO layer to form a layered composite relaxor ferroelectric layer, and generating an SRO layer on the layered composite relaxor ferroelectric layer to obtain the layered composite relaxor ferroelectric material. The layered composite relaxor ferroelectric material provided by the invention has excellent energy storage density and energy storage efficiency.

Description

technical field [0001] The present application relates to the field of relaxor ferroelectric energy storage, and more specifically relates to a layered composite relaxor ferroelectric material capable of simultaneously improving energy storage density and energy storage efficiency and a preparation method thereof. Background technique [0002] As the energy storage core of energy storage devices, dielectric capacitors have the advantages of high power density, fast charge and discharge speed, and long cycle life, which have attracted extensive attention and research. However, the development of dielectric capacitors has been limited by the defect of low energy density. , so research began to increase the energy density of dielectric capacitors in various ways. [0003] At present, the dielectric energy storage materials of dielectric capacitors are mainly divided into four categories, namely linear dielectric materials, ferroelectric materials, relaxor ferroelectric material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/08H01G4/10H01G4/008
CPCH01G4/08H01G4/10H01G4/008
Inventor 钟高阔陈骞鑫李江宇黄明强任传来安峰张园
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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