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A kind of disperse proton conductive ceramic electrolyte film and preparation method thereof

A technology of ceramic electrolyte and proton conduction, which is applied in the direction of circuits, fuel cells, electrical components, etc., can solve problems such as the difficulty in preparing high-performance proton conduction ceramic electrolyte films, and achieve the effects of high density, controllable thickness, and low cost

Active Publication Date: 2021-05-11
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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  • A kind of disperse proton conductive ceramic electrolyte film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (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;

[0025] (2) Simultaneous deposition of SrCe on the surface of ceramic tubes by metal-organic chemical vapor deposition technology 1-x Yb x o 3-α and SrCe 1-x Er x o 3-α The reaction source uses ytterbium acetylacetonate and erbium acetylacetonate, and the specific process parameters are: Yb reaction source temperature 450°C; Er reaction source temperature 420°C, Yb reaction source reaction time 30min; Er reaction source reaction time 20min, carrier gas H 2 The flow rate is 200mL / min.

[0026] (3) SrCe with a thickness of about 0.5 μm is finally obtained 1-x Yb x o 3-a / SrCe 1-x Er x o 3-α dispersed film, in which the main phase SrCe 1-x Yb x o 3-α The content accounts for about 70%, the film layer is uniform and dense, and has good bonding force with the substrate;

[0027] Determination of SrCe by AC...

Embodiment 2

[0029] (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;

[0030] (2) Simultaneous deposition of SrCe on the surface of ceramic tubes by metal-organic chemical vapor deposition technology 1-x Yb x o 3-α and SrCe 1-x Er x o 3-α The reaction source adopts ytterbium acetylacetonate and erbium acetylacetonate, and the specific process parameters are: Yb reaction source temperature 350°C; Er reaction source temperature 320°C, Yb reaction source reaction time 30min; Er reaction source reaction time 20min, carrier gas H 2 The flow rate is 100mL / min.

[0031] (3) SrCe with a thickness of about 1.5 μm is finally obtained 1-x Yb x o 3-a / SrCe 1-x Er x o 3-α dispersed film, in which the main phase SrCe 1-x Yb x o 3-α The content accounts for about 70%, the film layer is uniform and dense, and has good bonding force with the substrate;

[0032] Determination of SrCe by ...

Embodiment 3

[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) Simultaneous deposition of SrCe on the surface of ceramic tubes by metal-organic chemical vapor deposition technology 1-x Yb x o 3-α and SrCe 1-x Er x o 3-α The reaction source uses ytterbium acetylacetonate and erbium acetylacetonate, and the specific process parameters are: Yb reaction source temperature 650°C; Er reaction source temperature 620°C, Yb reaction source reaction time 30min; Er reaction source reaction time 20min, carrier gas H 2 The flow rate is 400mL / min.

[0036] (3) SrCe with a thickness of about 8.5 μm is finally obtained 1-x Yb x o 3-a / SrCe 1-x Er x o 3-α dispersed film, in which the main phase SrCe 1-x Yb x o 3-α The content accounts for about 80%, the film layer is uniform and dense, and has good bonding force with the substrate;

[0037] Determination of SrCe by AC...

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Abstract

The invention discloses a dispersed proton conductive ceramic electrolyte membrane and a preparation method thereof. The film is formed on the surface of the ceramic tube and is made of film material SrCe 1‑x Yb x o 3‑α and SrCe 1‑ x Er x o 3‑α composed of dispersed thin films, in which SrCe 1‑x Yb x o 3‑α Main phase, SrCe 1‑x Er x o 3‑α Dispersed in the main phase. The preparation method comprises the following steps: (1) ultrasonically cleaning the surface of the ceramic tube for 15-30 min, and drying; (2) simultaneously depositing SrCe on the surface of the ceramic tube by metal-organic chemical vapor deposition technology. 1‑x Yb x o 3‑α and SrCe 1‑x Er x o 3‑α , the metal reaction sources are Yb organic reaction source and Er organic reaction source respectively, and the carrier gas is H 2 ; By adjusting the reaction source temperature and reaction time to make SrCe 1‑x Yb x o 3‑α phase becomes the main phase, and finally a dispersed proton-conducting ceramic electrolyte film is obtained. The film of the present invention has the characteristics of high bonding strength with the substrate, high compactness, uniformity and stability, and excellent hydrogen resistance performance, and can be applied to solid oxide fuel cells, electrolysis of water for efficient production of hydrogen, synthesis of ammonia under normal pressure, separation and purification of hydrogen, etc. aspect.

Description

technical field [0001] The invention relates to a dispersed proton conductive ceramic electrolyte film 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, it h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1253H01M8/126C23C16/40
CPCC23C16/40H01M8/1253H01M8/126H01M2008/1293Y02E60/50
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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