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Double-layer energy storage ceramic with high temperature stability, and preparation method thereof

A stable, high-temperature technology, applied in the field of ceramic compositions, can solve problems such as poor temperature stability and achieve the effect of good temperature stability characteristics

Inactive Publication Date: 2020-08-07
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to overcome the disadvantage of poor temperature stability of existing energy storage ceramics, and provide a method for preparing double-layer energy storage ceramics with high temperature stability by adopting a lamination method

Method used

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  • Double-layer energy storage ceramic with high temperature stability, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1)(Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 Powder preparation

[0033] a. BaCO 3 Powder, CaCO 3 powder, ZrO powder and TiO 2 The powder is mixed according to the stoichiometric ratio;

[0034] b. ball milling the mixed powder for 12 hours;

[0035] c. The ball-milled powder was pre-fired at 1200°C for 4 hours, and the heating rate of the pre-fired was 5°C / min, so as to obtain (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 Powder.

[0036] (2)(Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -3wt% LiCO 3 Powder preparation

[0037] Weighing (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 Powder 4g, in (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 On the basis of powder, add 3wt% LiCO 3 Powder and 1wt% PVA binder, the three were mixed and ball milled for 12 hours, thereby obtaining (Ba 0.85 Ca0.15 )(Zr 0.1 Ti 0.9 )O 3 -3wt% LiCO 3 Powder.

[0038] (3)(Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -3wt% MgO powder preparation

[0039] Weighing (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9...

Embodiment 2

[0048] The preparation process of Example 2 is exactly the same as that of Example 1, except that the holding time of the double-layer ceramic is 5 hours. When the prepared double-layer energy storage ceramic works in the range of 20°C-100°C, the energy storage density change rate is 16.76%.

Embodiment 3

[0050] The preparation process of Example 3 is exactly the same as that of Example 1, except that the sintering temperature of the double-layer ceramic is 1450°C. When the prepared double-layer energy storage ceramic works in the range of 20°C-100°C, the energy storage density change rate is 15.93%.

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Abstract

The invention discloses a double-layer energy storage ceramic with high temperature stability. The chemical expression of the double-layer energy storage ceramic is (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3-3wt%LiCO3 / (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-3wt% MgO. A preparation method of the ceramic comprises the following steps: firstly, preparing (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-3wt% LiCO3 powder and (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-3wt% MgO powder according to a stoichiometric ratio, respectively weighing the two raw materials with the same mass, sequentially putting the two raw materials into a mold, and pressing toform a ceramic green body; and degumming the green body, sintering at 1300-1450 DEG C, and keeping the temperature for 3-5 hours to obtain the high-temperature-stability double-layer energy storage ceramic. The ceramic has good temperature stability, the energy storage density change rate is 13.38-18.49% when the ceramic works within the temperature range of 20-100 DEG C, and the ceramic can be used as an energy storage element to be applied to related fields.

Description

technical field [0001] The invention belongs to a kind of ceramic composition characterized by composition, in particular to a kind of high temperature stability (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -3wt% LiCO 3 / (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -The preparation method of 3wt% MgO double-layer energy storage ceramics. Background technique [0002] In the 21st century, the problem of environmental pollution has become increasingly prominent. In order to solve the environmental pollution caused by traditional vehicles, hybrid electric vehicles have entered people's field of vision, and energy storage components, as an important part of hybrid electric vehicles, directly affect their performance. To this end, people have done a lot of research on energy storage elements. Compared with supercapacitors and fuel cells, energy storage ceramics have the advantages of high power density, fast charge and discharge speed, and large output current, and have gradually be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/622
CPCC04B35/49C04B35/622C04B2235/3203C04B2235/3206C04B2235/3208C04B2235/3215C04B2235/3232C04B2235/3244
Inventor 李玲霞杨盼彭伟徐康力
Owner TIANJIN UNIV
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