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Composite proton conductive ceramic electrolyte film as well as preparation method and application thereof

A ceramic electrolyte, proton conduction technology, applied in circuits, fuel cells, electrical components, etc., can solve the problem of difficulty in preparing high-performance proton conductive ceramic electrolyte films, and achieve high density, excellent hydrogen barrier properties, and controllable thickness. Effect

Active Publication Date: 2020-06-19
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is currently difficult to prepare high-performance, uniform and stable proton-conducting ceramic electrolyte films on the surface of ceramic tubes for fuel cells.

Method used

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  • Composite proton conductive ceramic electrolyte film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) ZrO with a length of 60mm, an outer diameter of 15mm and a wall thickness of 2mm 2 Ultrasonic cleaning of ceramic tube surface for 15 minutes, drying;

[0028] (2) Preparation of SrCe on the surface of ceramic tubes by metal-organic chemical vapor deposition technology 1-x Yb x o 3-α thin film, the specific process parameters are: the reaction source is cerium acetylacetonate, strontium acetylacetonate, and ytterbium acetylacetonate, and the temperature of the reaction source is 350°C; H 2 The carrier gas flow rate is 200mL / min.

[0029] (3) Using metal organic chemical vapor deposition technology on SrCe 1-x Yb x o 3-α Preparation of SrCe on thin film surface 1-x Er x o 3-α thin film, the specific process parameters are: the reaction source is cerium acetylacetonate, strontium acetylacetonate, and erbium acetylacetonate, and the temperature of the reaction source is 200 ° C; H 2 The carrier gas flow rate is 100mL / min.

[0030] (4) according to the proces...

Embodiment 2

[0034] (1) ZrO with a length of 60mm, an outer diameter of 15mm and a wall thickness of 2mm 2 Ultrasonic cleaning of ceramic tube surface for 15 minutes, drying;

[0035] (2) Preparation of SrCe on the surface of ceramic tubes by metal-organic chemical vapor deposition technology 1-x Yb x o 3-αthin film; the specific process parameters are: the reaction source is cerium acetylacetonate, strontium acetylacetonate, and ytterbium acetylacetonate, and the temperature of the reaction source is 280°C; H 2 The carrier gas flow rate is 200mL / min.

[0036] (3) Using metal organic chemical vapor deposition technology on SrCe 1-x Yb x o 3-α Preparation of SrCe on thin film surface 1-x Er x o 3-α thin film, the specific process parameters are: cerium acetylacetonate, strontium acetylacetonate, erbium acetylacetonate, reaction source temperature 220 ° C; H 2 The carrier gas flow rate is 150mL / min.

[0037] (4) according to the process of step (2) in SrCe 1-x Er x o 3-α Prepar...

Embodiment 3

[0041] (1) ZrO with a length of 60mm, an outer diameter of 15mm and a wall thickness of 2mm 2 Ultrasonic cleaning of ceramic tube surface for 15 minutes, drying;

[0042] (2) Preparation of SrCe on the surface of ceramic tubes by metal-organic chemical vapor deposition technology 1-x Yb x o 3-α thin film; the specific process parameters are: the reaction source is cerium acetylacetonate, strontium acetylacetonate, and ytterbium acetylacetonate, and the temperature of the reaction source is 400°C; H 2 The carrier gas flow rate is 300mL / min.

[0043] (3) Using metal organic chemical vapor deposition technology on SrCe 1-x Yb x o 3-α Preparation of SrCe on thin film surface 1-x Er x o 3-α thin film, the specific process parameters are: cerium acetylacetonate, strontium acetylacetonate, erbium acetylacetonate, reaction source temperature 260 ° C; H 2 The carrier gas flow rate is 80mL / min.

[0044] (4) according to the process of step (2) in SrCe 1-x Er x o 3-α Prepar...

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Abstract

The invention discloses a composite proton conductive ceramic electrolyte film as well as a preparation method and application thereof. The film is formed on the surface of a ceramic tube and is a composite film formed by alternately compounding multiple layers of film materials SrCe<1-x>Yb<x>O<3-alpha> and SrCe<1-x>Er<x>O<3-alpha>, the innermost layer is the SrCe<1-x>Yb<x>O<3-alpha> film, and theoutermost layer is the SrCe<1-x>Er<x>O<3-alpha> film. The preparation method comprises the following steps: (1) carrying out ultrasonic cleaning on the surface of the ceramic tube for 15-30 minutes,and drying; and (2) sequentially and alternately forming a SrCe<1-x>Yb<x>O<3-alpha> film and a SrCe<1-x>Er<x>O<3-alpha> film on the surface of the ceramic tube by adopting a metal organic chemical vapor deposition technology, and finally obtaining the multi-layer SrCe<1-x>Yb<x>O<3-alpha> / SrCe<1-x>Er<x>O<3-alpha> composite proton conductive ceramic electrolyte film. According to the preparation method, the preparation of the composite proton conductive ceramic electrolyte film alternately formed by SrCe<1-x>Yb<x>O<3-alpha> and SrCe<1-x>Er<x>O<3-alpha> is realized on the surface of the ceramic tube for the first time, and the film is good in combination with a matrix, high in compactness, uniform, stable and excellent in hydrogen resistance.

Description

technical field [0001] The invention relates to a composite proton conductive ceramic electrolyte membrane and a preparation method thereof, belonging to the field of solid oxide fuel cell electrode materials. Background technique [0002] Rare earth doped perovskite AB 1-x m x o 3-δ (A=Sr, Ba, Ca; B=Ce, Zr; M=rare earth dopant element) ceramics have high proton conductivity at medium and high temperature (600-800°C), such materials are used in solid oxide fuel cells, hydrogen sensors , hydrogen production by electrolysis of water, ammonia production under normal pressure, hydrogen separation and purification, etc. are widely used [H.Iwahara, T.Esaka, H.Uchinda, N.Maeda, Solid State Ionics 3 / 4 (1981) 359]. The reduction in the thickness of the solid electrolyte can effectively reduce the internal resistance of the electrolyte, thereby significantly improving the proton transport efficiency of the electrolyte and the output power of the electrochemical device. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1253H01M8/126C23C16/40
CPCC23C16/409H01M8/1253H01M8/126H01M2008/1293Y02E60/50
Inventor 于庆河米菁郝雷李世杰杜淼刘晓鹏蒋利军李帅
Owner GRIMAT ENG INST CO LTD
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