Double-layer composite proton conductor material and preparation method thereof

A proton conductor, double-layer composite technology, applied in cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc., can solve the problem of low proton conductivity, hindering electron and electron hole conduction, and limiting Material application, etc.

Active Publication Date: 2020-04-17
NORTHEASTERN UNIV
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adjusting the ratio of B' and B" ions, oxygen vacancies are generated, protons are introduced, and proton conduction occurs; different from ABO 3 Simple Perovskite Material, Double Perovskite A 3 (B' 1+x B″ 2-x )O 9 The material can hinder electron and electron-hole conduction; however, double perovskite A 3 (B' 1+x B″ 2-x )O 9 The concentration of protons in the material decreases dramatically, resulting in a material with low proton conductivity at high temperature
[0005] From the above, it can be seen that the current simple perovskite structure ABO 3 The material is easy to generate electrons and electron-hole conduction, and the double perovskite A 3 (B' 1+x B″2 -x )O 9 The material has low proton conductivity at high temperature, which limits the application of the material

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
  • Double-layer composite proton conductor material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The double-layer composite proton conductor material is a double-layer structure composed of a matrix part and a coating part, and the molecular formula of the matrix part is A 1-y A' y B 1-z B' z o 3-α , the formula A of the coating part 3 (B' 1+x B″ 2-x )O 9-γ ;

[0038] A 1-y A' y B 1-z B' z o 3-α The A element is Ba, the B element is Ce, the B' element is Y, y=0 (no element A'), z=0.1, and the value of 3-α varies with AB 1-z B' z o 3-α The total valence state balance;

[0039] A 3 (B' 1+x B″ 2-x )O 9-γ for Ba 3 (Ca 1+x Nb 2-x )O 9-γ , x=0.18; the value of 9-γ varies with A 3 (B' 1+x B″ 2-x )O 9-γ The total valence state balance;

[0040] The thickness ratio of the coating part to the substrate part is 0.1;

[0041] The preparation method is:

[0042] Prepare BaCO 3 As the first A raw material, prepare CaCO 3 As the first B' raw material, prepare Nb 2 o 5 As the B" raw material; the first A raw material, the first B' raw material and...

Embodiment 2

[0049] In double-layer composite proton conductor materials, A 1-y A' y B 1-z B' z o 3-α The A element is Ca, the A' element is K, the B element is Sn, the B' element is Nd, y=0.2, z=0.3;

[0050] A 3 (B' 1+x B″ 2-x )O 9-γ for Ba 3 (Sr 1+x Nb 2-x )O 9-γ , x=0.22;

[0051] The thickness ratio of the coating part to the substrate part is 0.01;

[0052] Method is with embodiment 1, and difference is:

[0053] (1) The mixed powder I is pressed at a pressure of 10MPa and calcined at 1000°C for 20 hours;

[0054] (2) In the mixed powder I, the molar ratio A:B':B"=3:1.22:1.78;

[0055] (3) The compression pressure of the mixed powder II is 10MPa, and it is calcined at 800°C for 20 hours;

[0056] (4) In the mixed powder II, the molar ratio A:A':B:B'=0.8:0.2:0.7:0.3;

[0057] (5) The pressing pressure of calcined material II is 300 MPa; the calcined material I is covered on the substrate blank to form a coating by laser deposition method to obtain a double-layer blank...

Embodiment 3

[0060] In double-layer composite proton conductor materials, A 1-y A' y B 1-z B' z o 3-α The A element is Sr, the A' element is Na, the B element is Hf, the B' element is Sm, y=0.3, z=0.2;

[0061] A 3 (B' 1+x B″ 2-x )O 9-γ for Ba 3 (Sr 1+x Ta 2-x )O 9-γ , x=0.31;

[0062] The thickness ratio of the coating part to the substrate part is 0.02;

[0063] Method is with embodiment 1, and difference is:

[0064] (1) The mixed powder I is pressed at a pressure of 6MPa and calcined at 1000°C for 19 hours;

[0065] (2) In the mixed powder I, the molar ratio A:B':B"=3:1.31:1.69;

[0066] (3) The compression pressure of the mixed powder II is 6MPa, and it is calcined at 900°C for 19 hours;

[0067] (4) In the mixed powder II, the molar ratio A:A':B:B'=0.7:0.3:0.8:0.2;

[0068] (5) The pressing pressure of calcined material II is 80MPa; the calcined material I is covered on the substrate blank to form a coating by using the magnetron sputtering method, and a double-layer b...

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
porosityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a double-layer composite proton conductor material and a preparation method thereof. The material is a double-layer structure composed of a matrix part and a coating part, themolecular formula of the matrix part is A1-yA'yB1-zB'zO3-alpha, and the molecular formula of the coating part is A3 (B'1+xB''2-x) O9-gamma; the preparation method comprises the following steps: (1) preparing a first A raw material, a first B' raw material and a B'' raw material, performing mixing and ball-milling to obtain mixed powder I; (2) pressing the mixed powder I into blocks, and performing calcining to obtain a calcined material I; (3) preparing a second A raw material, a second B raw material, an A' raw material and a second B' raw material, performing mixing and ball-milling to obtain mixed powder II; (4) pressing the mixed powder II into blocks, and performing calcining to obtain a calcined material II; (5) pressing the calcined material II into a matrix blank; covering the matrix blank with the calcined material I to form a coating by adopting a co-pressing, tape casting, spin coating, magnetron sputtering or laser deposition method; and (6) sintering the double-layer blank. The product provided by the invention ensures that the material has high proton conductivity and the electronic conductivity in the material is greatly limited.

Description

technical field [0001] The invention relates to the technical field of solid electrolyte proton conductors, in particular to a double-layer composite proton conductor material and a preparation method thereof. Background technique [0002] High-temperature oxide proton conductors are solid electrolyte materials that can transmit protons at high temperatures. Proton conductors have good application prospects in the fields of hydrogen sensors, fuel cells, ammonia synthesis at atmospheric pressure, and electrochemical hydrogenation and dehydrogenation; Simple perovskite ABO doped in conductors 3 type materials and double perovskite A 3 (B' 1+x B″ 2-x )O 9 The material has good proton conductivity. [0003] Simple perovskite structure ABO 3 It is a cubic, tetragonal or orthorhombic crystal system, where the A position is usually +2 valent cations (such as Ba, Ca, Sr, etc.), and the B position is +4 valent cations (such as Zr, Ce, etc.), usually trivalent rare earth element...

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): H01B1/16H01B13/00C04B35/457C04B35/468C04B35/488C04B35/495C04B35/50C04B35/51C04B35/622
CPCC04B35/457C04B35/4682C04B35/488C04B35/495C04B35/50C04B35/51C04B35/622C04B2235/3201C04B2235/3208C04B2235/3213C04B2235/3215C04B2235/3217C04B2235/3224C04B2235/3225C04B2235/3229C04B2235/3251C04B2235/3286C04B2235/656C04B2235/6567C04B2235/768H01B1/16H01B13/00
Inventor 厉英丁玉石
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap