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Ceramic material high in energy storage density and energy storage efficiency and preparation method of ceramic material

A technology with high energy storage density and energy storage efficiency, applied in the field of ceramic materials with high energy storage density and energy storage efficiency and their preparation, can solve the problems of low energy storage density, poor temperature stability, limited practical use, etc. Energy storage density, improved electrical breakdown strength, and good energy storage efficiency

Inactive Publication Date: 2017-05-10
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, lead-free energy storage ceramic materials are mainly concentrated in SrTiO 3 system, BaTiO 3 System, Ba1-xSrxTiO 3 system, CaTiO 3 System and (Bi 0.5 Na 0.5 ) TiO 3 However, these materials have low energy storage density and poor temperature stability, which limits the practical use of these materials

Method used

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  • Ceramic material high in energy storage density and energy storage efficiency and preparation method of ceramic material
  • Ceramic material high in energy storage density and energy storage efficiency and preparation method of ceramic material
  • Ceramic material high in energy storage density and energy storage efficiency and preparation method of ceramic material

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Experimental program
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Embodiment 1

[0029] Embodiment 1 of the present invention provides a kind of ceramic material with high energy storage density and energy storage efficiency, and its chemical formula is 0.85 (K 0.5 Na 0.5 )NbO 3 -0.15Bi(Mg 0.5 Ti 0.5 )O 3 ,.

[0030] A method for preparing a ceramic material with high energy storage density and energy storage efficiency, comprising the following steps:

[0031] Ingredients: After drying analytically pure anhydrous potassium carbonate, anhydrous sodium carbonate, niobium pentoxide, magnesium oxide, titanium dioxide and bismuth trioxide at 200°C for 10 hours, according to the chemical formula 0.85(K 0.5 Na 0.5 )NbO 3 -0.15Bi(Mg 0.5 Ti 0.5 )O 3 The stoichiometric ratio in the above-mentioned each raw material is weighed and mixed to obtain a mixture;

[0032] Preparation of dry powder: The resulting mixture was dissolved in ethanol with ZrO 2 The ball is used as a medium for ball milling for 36 hours, and the dry powder of the mixture is obtained ...

Embodiment 2

[0048] Embodiment 2 of the present invention provides a kind of ceramic material with high energy storage density and high energy storage efficiency, and its chemical formula is 0.95 (K 0.5 Na 0.5 )NbO 3 -0.05Bi(Mg 0.5 Ti 0.5 )O 3 ,.

[0049] A method for preparing a ceramic material with high energy storage density and high energy storage efficiency, comprising the following steps:

[0050] Ingredients: After drying analytically pure anhydrous potassium carbonate, anhydrous sodium carbonate, niobium pentoxide, magnesium oxide, titanium dioxide and bismuth trioxide at 180°C for 8 hours, according to the chemical formula 0.95(K 0.5 Na 0.5 )NbO 3 -0.05Bi(Mg 0.5 Ti 0.5 )O 3 The stoichiometric ratio in the above-mentioned each raw material is weighed and mixed to obtain a mixture;

[0051] Preparation of dry powder: The resulting mixture was dissolved in ethanol with ZrO 2 The ball is used as a medium for ball milling for 40 hours, and the dry powder of the mixture is ...

Embodiment 3

[0065] Embodiment 3 of the present invention provides a kind of ceramic material with high energy storage density and high energy storage efficiency, and its chemical formula is 0.80 (K 0.5 Na 0.5 )NbO 3 -0.20Bi(Mg 0.5 Ti 0.5 )O 3 ,.

[0066] A method for preparing a ceramic material with high energy storage density and high energy storage efficiency, comprising the following steps:

[0067] Ingredients: After drying analytically pure anhydrous potassium carbonate, anhydrous sodium carbonate, niobium pentoxide, magnesium oxide, titanium dioxide and bismuth trioxide at 250°C for 9 hours, according to the chemical formula 0.80K 0.5 Na 0.5 )NbO 3 -0.20Bi(Mg 0.5 Ti 0.5 )O 3 The stoichiometric ratio in the above-mentioned each raw material is weighed and mixed to obtain a mixture;

[0068] Preparation of dry powder: The resulting mixture was dissolved in ethanol with ZrO 2 The ball is used as a medium for ball milling for 48 hours, and the dry powder of the mixture is o...

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Abstract

The invention relates to the technical field of dielectric energy storage ceramic materials and discloses a ceramic material high in energy storage density and energy storage efficiency. A chemical formula of the ceramic material is (1-x) (K0.5Na0.5)NbO3-xBi(Mg0.5Ti0.5)O3, wherein x is larger than or equal to 0 and smaller than or equal to 0.2. Due to addition of Bi(Mg0.5Ti0.5)O3, crystal grains of (K0.5Na0.5)NbO3 ceramic are reduced; by regulation of a ceramic phase inversion temperature interval, electric breakdown strength of the ceramic is improved, and high storage density, high energy storage efficiency and high energy storage temperature stability of the ceramic material are achieved. In addition, technical simplicity in preparation, low preparation cost and high practicality are realized.

Description

technical field [0001] The invention relates to the technical field of dielectric energy storage ceramic materials, in particular to a ceramic material with high energy storage density and energy storage efficiency and a preparation method thereof. Background technique [0002] Pulse power technology is an emerging technology field developed in the 1960s with the integration of multiple disciplines. It has many advantages such as high voltage, high current, and strong pulse. my country began to study the application of pulse power technology in the field of national defense since the mid-1970s, including accelerators, particle beams, electromagnetic launches, etc. At present, this technology has become one of the supporting technologies in the field of high-tech research in national defense. A pulsed power system generally includes: primary energy source, intermediate energy storage and pulse forming system, switching conversion system, measurement system and load. The inte...

Claims

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Application Information

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IPC IPC(8): C04B35/495C04B35/622C04B41/88
CPCC04B35/495C04B35/622C04B41/009C04B41/5116C04B41/88C04B2235/3201C04B2235/3206C04B2235/3232C04B2235/3298C04B2235/77
Inventor 马华杜洪亮邵腾强王军王甲富屈绍波冯明德
Owner AIR FORCE UNIV PLA
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