Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of nanosilver-doped yttrium barium copper oxide film

A technology of yttrium barium copper oxide and nano silver is applied in the field of preparation of nano silver doped yttrium barium copper oxide film, which can solve the problems of irregular shape of silver particles, unstable precursor sol, and reduced performance of superconducting layer, etc. The effect of uniform core, high stability and low phase formation temperature

Active Publication Date: 2012-02-15
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the nano-silver particles doped in the coated conductor are all prepared by mechanical ball milling process or chemical reduction method. The silver particles prepared by mechanical ball milling process are irregular in shape and large in particle size, resulting in instability of the silver-doped precursor sol; and Nano-silver particles prepared by chemical reduction method are easy to introduce impurities into the colloid, which reduces the performance of the prepared superconducting layer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of nanosilver-doped yttrium barium copper oxide film
  • Preparation method of nanosilver-doped yttrium barium copper oxide film
  • Preparation method of nanosilver-doped yttrium barium copper oxide film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step (1) preparation of precursor sol:

[0032] Step 101, dissolving silver nitrate in a mixed solvent of ethanol and water to prepare a solution with a silver nitrate concentration of 0.15 mol / L, using the prepared solution as a reaction solution, and introducing an argon flow into the reaction solution with a stainless steel needle tube as For the cathode, place a stainless steel needle tube 3mm above the surface of the reaction solution, control the gas flow rate to 500mL / min, use silver foil as the anode, and turn on the power for electrochemical reaction. Control the electrochemical reaction voltage to 1KV, current to 10mA, and reaction time to 60min, obtain nano-silver sol; The volume ratio of ethanol and water in the mixed solvent is 1: 2;

[0033] Step 102, dissolving yttrium trifluoroacetate, barium trifluoroacetate and copper benzoate in ethanol according to the atomic ratio of yttrium: barium: copper = 1: 2: 3, to obtain the yttrium barium copper oxygen precu...

Embodiment 2

[0041] Step (1) preparation of precursor sol:

[0042] Step 101, dissolving silver nitrate in a mixed solvent of ethanol and water to prepare a solution with a silver nitrate concentration of 0.2 mol / L, using the prepared solution as a reaction solution, and introducing an argon flow into the reaction solution with a stainless steel needle tube as For the cathode, place a stainless steel needle tube 5mm above the surface of the reaction solution, control the gas flow rate to 1000mL / min, use silver foil as the anode, and turn on the power to carry out the electrochemical reaction. Control the electrochemical reaction voltage to 2KV, current to 20mA, and reaction time to 10min, obtain nano-silver sol; The volume ratio of ethanol and water in the mixed solvent is 1: 10;

[0043] Step 102, dissolving yttrium trifluoroacetate, barium trifluoroacetate and copper benzoate in ethanol according to the atomic ratio of yttrium: barium: copper = 1: 2: 3, to obtain the yttrium barium coppe...

Embodiment 3

[0050] Step (1) preparation of precursor sol:

[0051] Step 101, dissolving silver nitrate in a mixed solvent of ethanol and water to prepare a solution with a concentration of silver nitrate of 0.5 mol / L, using the prepared solution as a reaction solution, and passing an argon flow into the reaction solution with a stainless steel needle tube as For the cathode, place a stainless steel needle tube 2mm above the surface of the reaction solution, control the gas flow rate to 200mL / min, use silver foil as the anode, connect the power supply for electrochemical reaction, control the electrochemical reaction voltage to 0.5KV, the current to 1mA, and the reaction time Be 30min, obtain nano-silver sol; The volume ratio of ethanol and water in the described mixed solvent is 1: 1;

[0052] Step 102, dissolving yttrium trifluoroacetate, barium trifluoroacetate and copper benzoate in ethanol according to the atomic ratio of yttrium: barium: copper = 1: 2: 3, to obtain the yttrium barium...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a nanosilver-doped yttrium barium copper oxide film, which comprises the following steps: 1. preparing a nanosilver sol by electrochemical reaction, adding the nanosilver sol into a yttrium barium copper oxide precursor liquid to prepare a precursor sol; 2. evenly applying the precursor sol on a CeO2 / YSZ / Y2O3 / NiW substrate to obtain a wet film; 3. carrying out low-temperature pyrolysis to obtain a precursor film; 4. crystallizing to obtain the nanosilver-doped yttrium barium copper oxide film. The electrochemical reaction for preparing nanosilver particles does not need dispersant, reducer or other complex compounds, and can easily obtain the high-purity impurity-free nanosilver sol; the nanosilver particles in the prepared precursor sol aredistributed uniformly, do not aggregate, and have high stability, and the dimension of the nanosilver particles is smaller than 20 nm; the nanosilver-doped yttrium barium copper oxide film obtained by applying the precursor sol has the advantages of low phase formation temperature and uniform nucleation, and has a superconductive layer which is 400-600nm thick and has excellent superconductivity.

Description

technical field [0001] The invention belongs to the technical field of thin film materials, and in particular relates to a preparation method of a nano-silver doped yttrium barium copper oxide film. Background technique [0002] Coated conductors have become one of the hotspots in the research of practical high-temperature superconducting materials due to their superior high-field performance at 77K. People have successfully developed the chemical solution deposition technology to prepare YBCO superconducting film, among which the nucleation and grain dominant orientation growth in the crystallization process are the focus of research. In the process of preparing coated conductors by using chemical solution deposition technology, nano-silver is added to the superconducting film, which is beneficial to reduce the phase formation temperature of the superconducting layer and promote its uniform nucleation and growth. [0003] In the preparation process of REBCO (RE stands for ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 李成山金利华白利锋卢亚锋于泽铭
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products