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A ceria-based electrolyte film with preferred orientation and its preparation and application

An electrolyte film, preferential orientation technology, applied in circuits, fuel cells, electrical components, etc., can solve the problem of inability to prepare cerium oxide-based electrolyte films, and achieve the effect of improving electrocatalytic performance, improving ohmic resistance, and reducing ohmic resistance.

Active Publication Date: 2016-01-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the traditional ceramic sintering method cannot prepare cerium oxide-based electrolyte films with preferred orientation, it is necessary to use physical vapor deposition technology to prepare cerium oxide-based electrolyte films

Method used

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  • A ceria-based electrolyte film with preferred orientation and its preparation and application
  • A ceria-based electrolyte film with preferred orientation and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In nickel oxide and Y 2 O 3 Stable ZrO 2 Composite anode / Y 2 O 3 Stable ZrO 2 Sputtering dense Gd with a preferred orientation of (100) on the membrane electrode (NiO-YSZ / YSZ) 2 O 3 Doped CeO 2 (Gd 0.1 Ce 0.9 O 1.95 1) Electrolyte separator, ultrasonically clean the anode-supported membrane electrode with acetone, ethanol, and distilled water and dry, then put it into the vacuum chamber of the magnetron sputtering instrument, adjust the target base distance to about 6cm, and use cerium / Gadolinium alloy material is the target material, the purity of the target material is above 99.99%, the molar ratio of cerium / gadolinium is 9 / 1, and the vacuum is 8*10 -4 Pa, then heat the substrate stage, the temperature is stabilized to 400℃, the flow of argon gas is 10.0sccm, the flow of oxygen is 1.2sccm, and the sputtering power is 9W / cm 2 , The sputtering pressure is 0.5Pa, the rotation speed of the substrate table is set to 5 turns / min, and the thickness is about 500nm. After complet...

Embodiment 2

[0022] In nickel oxide and Y 2 O 3 Stable ZrO 2 Composite anode / Sc 2 O 3 Stable ZrO 2 The sputtering texture orientation is (110) dense Gd on the membrane electrode (NiO-YSZ / ScSZ) 2 O 3 Doped CeO 2 (Gd 0.2 Ce 0.8 O 1.9 ) Electrolyte separator, adjust the target base distance to about 7cm, use cerium / samarium alloy material as the target, the purity is above 99.9%, the cerium / samarium molar ratio is 8 / 2, and the vacuum is 8*10 -4 Pa, then heat the substrate stage, the temperature is stabilized to 300℃, the flow of argon gas is 40.0sccm, the flow of oxygen is 5.0sccm, and the sputtering power is 8W / cm 2 , The sputtering pressure is 1.0Pa, the thickness is about 600nm, the rotation speed of the substrate stage is set to 10 turns / min, and the dense Gd is completed 0.2 Ce 0.8 O 1.9 After the sputtering of the interlayer, the dense Gd with the sputtering texture orientation of (110) on the membrane electrode (NiO-YSZ / ScSZ) was detected by XRD 2 O 3 Doped CeO 2 (Gd 0.2 Ce 0.8 O 1.9 ) Elec...

example 3

[0024] Dense Sm with (110) texture orientation was sputter deposited on NiO-SDC anode substrate 2 O 3 Doped CeO 2 (Sm 0.2 Ce 0.8 O 1.9 ) Electrolyte layer, adjust the target base distance to about 6cm, use cerium / samarium alloy material as the target, the purity is above 99.9%, the cerium / samarium molar ratio is 8 / 2, and the vacuum is 8*10 -4 Pa, then heat the substrate stage, the temperature is stabilized to 400℃, the flow of argon gas is 40.0sccm, the flow of oxygen is 5.0sccm, and the sputtering power is 8W / cm 2 , The sputtering pressure is 0.8Pa, the thickness is about 600nm, the rotation speed of the substrate table is set to 10 turns / minute, and the Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3 (BSCF) and Sm 0.2 Ce 0.8 O 1.9 Composite material (Sm 0.2 Ce 0.8 O 1.9 The mass fraction of 30wt.%) is the cathode. The battery performance test is carried out on the four-terminal battery test device. Air is the cathode gas and the wet hydrogen is the anode gas. The maximum power density of the bat...

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Abstract

The invention discloses a ceria based electrolyte film with a preferredly exposed crystal surface which can be used as an electrolyte interlayer of a solid oxide fuel cell, and can also be used alone as an electrolyte layer of the solid oxide fuel cell, or used for the catalytic reaction; the film is prepared by a magnetron reactive sputtering method. By the use of the ceria based electrolyte film with the preferredly exposed crystal surface, electro-catalytic properties of a cathode on oxygen and an anode on a fuel gas and conductive properties of the ceria based electrolyte film can be effectively improved, the electrode polarization resistance and ohmic polarization resistance can be reduced, and the middle and low temperature performance of the cell can be effectively improved.

Description

Technical field [0001] The invention relates to the field of solid oxide fuel cells, in particular to a cerium oxide-based electrolyte film with preferentially exposed crystal faces and a preparation method thereof. Background technique [0002] The solid oxide fuel cell is an energy conversion device that can efficiently convert the chemical energy in the fuel gas (such as hydrogen, natural gas, coal gas, etc.) into electrical and thermal energy, and does not require noble metal catalysts, adopts an all-solid structure, and has low emissions Low noise, it is an ideal decentralized power station and centralized power station technology, can also be applied to vehicle auxiliary power supply, portable power supply, etc. [0003] In order to reduce manufacturing costs, improve battery long-term stability and reliability, and shorten start-up time, medium and low temperature solid oxide fuel cells operating at 400-700°C have become the focus of research and development at home and abro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/126
CPCH01M8/126H01M2008/1293Y02E60/50
Inventor 程谟杰武卫明涂宝峰区定容崔大安
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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