Perovskite structure material and preparation method thereof

A technology of perovskite structure and metal elements, applied in structural parts, battery pack parts, circuits, etc., can solve the problems of insufficient stability of shell materials, and achieve the effect of excellent stability and excellent corrosion resistance.

Inactive Publication Date: 2010-08-04
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the organic resin, the stability of the shell material is not enough in the environment of molten sulfur and sodium polysulfide at 350 °C

Method used

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  • Perovskite structure material and preparation method thereof
  • Perovskite structure material and preparation method thereof
  • Perovskite structure material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Perovskite structure material La 0.1 Sr 0.9 co 0.3 Ti 0.7 o 3 Preparation of (LSCT):

[0035] Press La 0.1 Sr 0.9 co 0.3 Ti 0.7 o 3 The stoichiometric ratio, each weighing an appropriate amount of La 2 o 3 ,Co 2 o 3 , SrCO 3 ,TiO 2 , mixed by ball milling in alcohol medium for 3 hours, dried at 60°C for 24 hours, raised to 1150°C at a rate of 2°C / min, kept for 10 hours, and cooled with the furnace. The obtained powder is granulated by adding 1% polyvinyl butyral (PVB) binder of the powder weight, and the particle size of the powder is controlled to be 100-400 meshes, pressed and molded, and the temperature rises to 1330 at a rate of 2° C. / min. ℃ sintering for 1 hour.

Embodiment 2

[0037] Perovskite structure La 0.9 Ca 0.1 co 0.2 Cr 0.8 o 3 Preparation of (LCCC):

[0038] Press La 0.9 Ca 0.1 co 0.2 Cr 0.8 o 3 The stoichiometric ratio, each weighing an appropriate amount of La 2 o 3 ,Co 2 o 3 , CaCO 3 , Cr 2 o 3 , mixed by ball milling in alcohol medium for 3 hours, dried at 60°C for 24 hours, raised to 1100°C at a rate of 2°C / min, kept for 10 hours, and cooled with the furnace. The obtained powder is granulated by adding 1% polyvinyl butyral (PVB) binder of the powder weight, and the particle size of the powder is controlled to be 100 to 400 meshes, pressed and molded, and the temperature rises at a rate of 2° C. / min. Sinter at 1500°C for 1 hour.

Embodiment 3

[0040] Perovskite structure SrCo 0.6 Fe 0.2 Nb 0.2 o 3 (SCFN) preparation:

[0041] Press SrCo 0.6 Fe 0.2 Nb 0.2 o 3 The stoichiometric ratio, each weighed an appropriate amount of SrCO 3 ,Co2 o 3 , Fe 2 o 3 , Nb 2 o 5 , mixed by ball milling in alcohol medium for 3 hours, dried at 60°C for 24 hours, raised to 1200°C at a rate of 2°C / min, kept for 10 hours, and cooled with the furnace. The obtained powder is granulated by adding 1% polyvinyl butyral (PVB) binder of the powder weight, and the particle size of the powder is controlled to be 100 to 400 meshes, pressed and molded, and the temperature rises at a rate of 2° C. / min. Sinter at 1300°C for 1 hour.

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Abstract

The invention relates to a conductive corrosion-resistant perovskite structure material which is characterized in that the chemical formula of the material can be represented by ABO3, wherein A is a rare earth element or an alkaline earth metal element, or the combination of a rare earth metal element and the alkaline earth metal element, and B is one or more transition metal elements. The conductive corrosion-resistant perovskite structure material has great electronic conductivity and excellent stability and corrosion resistance, in particular to the corrosion resistance against the molten salt environments. The material can be applied in the corrosion resistance of housings of sodium sulfur batteries and the corrosion resistance of devices in other molten salt environments.

Description

technical field [0001] The invention relates to a corrosion-resistant and high-conductivity perovskite structure material, which belongs to the field of corrosion-resistant materials. Background technique [0002] Because of their excellent energy conversion efficiency, sodium-sulfur batteries have attracted much attention as next-generation energy storage batteries. Since sulfur and sodium polysulfide, the active material of the battery, are in a molten state under working conditions, they are highly corrosive, which imposes high requirements on the corrosion resistance of the shell material of the battery. Since the battery case often also acts as a current collector, the battery case material must also have good electronic conductivity. [0003] US Patent No. 4189531 has reported that a conductive phenolic resin is coated on the surface of metal aluminum by spraying technology, and a certain degree of electrical conductivity and corrosion resistance are provided through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/50C04B35/47C04B35/622H01M2/02H01M50/117H01M50/145
CPCY02E60/12Y02E60/10
Inventor 温兆银黄颖杨建华刘宇曹佳弟
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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