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A solid electrolyte crystal material and process for preparing crystal film

A technology for solid electrolytes and crystal materials, which is used in crystal growth, chemical instruments and methods, metal material coating processes, etc. to achieve the effect of high ionic conductivity

Inactive Publication Date: 2003-12-31
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For CsAg 4 I 5 The data, in the article (A.M.Pogrebnoi, L.S.Kudin and K.V.Rakov, Russian journal of physical Chemistry, 75 (2001) 733.) had been reported, and Rb 0.5 Cs 0.5 Ag 4 I 5 is not publicly available worldwide

Method used

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  • A solid electrolyte crystal material and process for preparing crystal film
  • A solid electrolyte crystal material and process for preparing crystal film
  • A solid electrolyte crystal material and process for preparing crystal film

Examples

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Embodiment 1

[0018] After mixing three kinds of binary iodide powders of RbI, CsI and AgI in molar ratio x=0.5 and y=0.15, (Rb x Cs 1-x I) y (AgI) 1-y The mixture is fully ground with a mortar, and then the powder is placed in the molybdenum (or tungsten) boat of the vacuum coating machine. When the pressure of the vacuum chamber is 2×10 -3 At Pa, cover the small boat with a baffle, and heat the small boat until the powder starts to melt, and keep it at this temperature. After all the powder is melted and no bubbles are generated, turn off the power to the small boat. Heat the newly cleaved NaCl crystal substrate pre-placed above the vacuum chamber to 75°C, then remove the baffle on the boat and heat the boat rapidly until white residue appears in the boat (film deposition rate is 5nm / s), Immediately cover the boat with a baffle, cut off the heating current of the boat, so far, a new solid electrolyte material Rb 0.5 Cs 0.5 Ag 4 I 5 The crystal thin film is prepared.

Embodiment 2

[0020] After mixing three kinds of binary iodide powders of RbI, CsI and AgI in molar ratio x=0.5 and y=0.16, (Rb x Cs 1-x I) y (AgI) 1-y The mixture is fully ground with a mortar, and then the powder is placed in the molybdenum (or tungsten) boat of the vacuum coating machine. When the pressure of the vacuum chamber is 1.4×10 -3 At Pa, cover the small boat with a baffle, and heat the small boat until the powder starts to melt, and keep it at this temperature. After all the powder is melted and no bubbles are generated, turn off the power to the small boat. Heat the newly cleaved NaCl crystal substrate previously placed above the vacuum chamber to 55°C, then remove the baffle on the boat and heat the boat rapidly until white residue appears in the boat (film deposition rate is 15nm / s), Immediately cover the boat with a baffle, cut off the heating current of the boat, so far, a new solid electrolyte material Rb 0.5 Cs 0.5 Ag 4 I 5 The crystal thin film is prepared.

Embodiment 3

[0022] After mixing three binary iodide powders of RbI, CsI and AgI in molar ratio x=0.5 and y=0.155, (Rb x Cs 1-x I) y (AgI) 1-y Grind the mixture fully with a mortar, and then put the powder into the molybdenum (or tungsten) boat of the vacuum coating machine. When the pressure of the vacuum chamber is less than 1.6×10 -3 At Pa, cover the small boat with a baffle, and heat the small boat until the powder starts to melt, and keep it at this temperature. After all the powder is melted and no bubbles are generated, turn off the power to the small boat. Heat the newly cleaved NaCl crystal substrate pre-placed above the vacuum chamber to 65°C, then remove the baffle on the boat and heat the boat rapidly until white residue appears in the boat (film deposition rate is 10nm / s), Immediately cover the boat with a baffle, cut off the heating current of the boat, so far, a new solid electrolyte material Rb 0.5 Cs 0.5 Ag 4 I 5 The crystal thin film is prepared.

[0023] Although...

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Abstract

The present invention belongs to the field of solid electrolyte material, and provides one kind of solid electrolyte crystal material and the preparation process of its crystal film. The crystal material has the chemical expression of Rb0.5Cs0.5Ag4I5, cubic crystal structure under room temperature with lattice constant of a=1.131 nm. The preparation process of the crystal film includes compounding with RbI, CsI and AgI mixture (RbxCs1-xI)y(AgI)1-y, where x=0.5 and y=0.15-0.16; and vacuum evaporation coating for epitaxial growth of crystal film on newly cleaved NaCl crystal chip in a vacuum chamber of 0.002 Pa below pressure and at 55-75 deg.c with the film depositing rate being 5-15 nm / s.

Description

technical field [0001] The invention relates to a vacuum thermal evaporation method for preparing a solid electrolyte crystal material and a crystal film thereof, in particular to a method for preparing a quaternary compound by using binary iodide crystal powder, and belongs to the field of solid electrolyte materials. Background technique [0002] Epitaxial Growth of MAg on NaCl Crystal Substrate by Vacuum Thermal Evaporation 4 I 5 Type solid electrolyte (or superionic conductor) crystal thin film has been proved to be an effective means through many experiments. It is a very convenient and quick way to prepare and study new materials, especially crystal materials. It is discussed in detail in Kharkov State University, Kharkov, Ukraine, 1996, p.159.]. [0003] During the preparation of such samples, binary iodide crystal powders (KI, RbI, CsI, AgI, etc.) are mainly used, mixed together in an appropriate chemical molar ratio, and molybdenum boats (or tungsten boats) are u...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/26C30B23/02
Inventor 孙家林郭继华田广彦
Owner TSINGHUA UNIV
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