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Perovskite cathode film and preparation method thereof

A perovskite-type, thin-film technology, applied in battery electrodes, electrical components, circuits, etc., can solve problems such as the inability to prepare perovskite-type thin films, and achieve the effect of improving electrocatalytic performance and reducing cathode polarization resistance.

Inactive Publication Date: 2015-05-06
ANYANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since traditional ceramic sintering methods cannot prepare perovskite films with preferred orientation, it is necessary to prepare doped cerium oxide films by physical vapor deposition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In nickel oxide with Y 2 o 3 Stable ZrO 2 Composite Anode / Y 2 o 3 Stable ZrO 2 Sputtered La with (100) crystal plane preferred orientation on membrane electrode (NiO-YSZ / YSZ) 0.9 Sr 0.1 MnO 2+d For the thin film, the anode-supported membrane electrode was ultrasonically cleaned with acetone, ethanol, and distilled water in sequence, and after drying, it was placed in the vacuum chamber of the magnetron sputtering apparatus, and the target-base distance was adjusted to about 6 cm, and the La / Sr / Mn The alloy material is the target material, the purity of the target material is above 99.99%, the molar ratio of La / Sr / Mn is 9 / 1 / 10, and the vacuum is 8*10 -4 Pa, then heat the substrate table, the temperature rises to 100°C, the argon flow rate is 10.0 sccm, the oxygen flow rate is 1.2 sccm, and the sputtering power is 9W / cm 2 , the sputtering pressure is 0.5Pa, the rotation speed of the substrate table is set at 5 cycles / min, and the thickness is about 500nm. 0.9 Sr ...

Embodiment 2

[0022] In nickel oxide with Y 2 o 3 Stable ZrO 2 Composite Anode / Y 2 o 3 Stable ZrO 2 Sputtered La with (110) crystal plane preferred orientation on membrane electrode (NiO-YSZ / YSZ) 0.8 Sr 0.2 co 0.2 Fe 0.8 o 2-d For the thin film, the anode-supported membrane electrode was ultrasonically cleaned with acetone, ethanol, and distilled water in sequence, and after drying, it was placed in the vacuum chamber of the magnetron sputtering instrument, and the target-base distance was adjusted to about 6 cm. La / Sr / Co / Fe alloy material is used as the target material, the purity of the target material is above 99.99%, the molar ratio of La / Sr / Co / Fe is 8 / 2 / 2 / 8, and the vacuum is 8*10 -4 Pa, then heat the substrate table, the temperature rises to 200°C, the flow rate of argon gas is 10.0 sccm, the flow rate of oxygen gas is 1.2 sccm, and the sputtering power is 9W / cm 2 , the sputtering pressure is 0.5Pa, the rotation speed of the substrate table is set at 5 cycles / min, and the t...

Embodiment 3

[0024] In nickel oxide with Y 2 o 3 Stable ZrO 2 Composite Anode / Y 2 o 3 Stable ZrO 2 Sputtered La with (110) crystal plane preferred orientation on membrane electrode (NiO-YSZ / YSZ) 0.6 Sr 0.4 co 0.2 Fe 0.8 o 2-d For the thin film, the anode-supported membrane electrode was ultrasonically cleaned with acetone, ethanol, and distilled water in sequence, and after drying, it was placed in the vacuum chamber of the magnetron sputtering instrument, and the target-base distance was adjusted to about 6 cm. La / Sr / Co / Fe alloy material is the target material, the purity of the target material is above 99.99%, the molar ratio of La / Sr / Co / Fe is 6 / 4 / 2 / 8, and the vacuum is 8*10 -4 Pa, then heat the substrate table, the temperature rises to 200°C, the flow rate of argon gas is 10.0 sccm, the flow rate of oxygen gas is 0.7 sccm, 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 cycles / min, and the thickness...

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Abstract

The invention discloses a perovskite cathode film with a preferred exposure crystal plane. The perovskite cathode film can be used as an oxygen electrode of a solid oxide fuel cell and an oxygen electrode of a metal-air cell and also can be used as a catalyst for catalytic reaction; the film is prepared by adopting a magnetron reactive sputtering method. By utilizing the perovskite cathode film with the preferred exposure crystal plane, the electric catalytic activity of the oxygen electrode of the solid oxide fuel cell and the metal-air cell for the oxygen can be effectively improved, the polarization resistance of the oxygen electrode is reduced, and the medium-high-temperature performance of the cell can be effectively improved.

Description

technical field [0001] The invention relates to the fields of solid oxide fuel cells and metal-air batteries, in particular to a perovskite thin film cathode electrode material with preferentially exposed crystal planes and a preparation method. Background technique [0002] Solid oxide fuel cell or metal-air battery is an energy conversion device that can efficiently convert the chemical energy in fuel gas (such as hydrogen, natural gas, coal gas, etc.) Solid structure, low emission and low noise, it is an ideal distributed power station and centralized power station technology, and can also be applied to vehicle auxiliary power supply, portable power supply, etc. [0003] In order to reduce manufacturing costs, improve long-term battery stability and reliability, and shorten start-up time, medium and low temperature solid oxide fuel cells and metal-air fuel cells have become the focus of research and development at home and abroad. The perovskite-type catalytic film can b...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88
CPCH01M4/86H01M4/8871H01M2004/8684Y02E60/50
Inventor 武卫明阎冬张长松侯绍刚孙保平张楠郑勇王芳
Owner ANYANG INST OF TECH
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