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Preparation method of solid oxide fuel cell Ln2NiO4 film cathode

A solid oxide, fuel cell technology, used in solid electrolyte fuel cells, battery electrodes, circuits, etc., can solve problems such as large contact resistance, achieve small electrode volume and weight, high electrochemical performance, and reduce contact resistance. Effect

Inactive Publication Date: 2015-06-17
黑龙江慧然科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem of large interface contact resistance between the powder cathode material electrode and the solid electrolyte of the existing solid oxide fuel cell, and provides a solid oxide fuel cell Ln 2 NiO 4 Preparation method of thin film cathode

Method used

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  • Preparation method of solid oxide fuel cell Ln2NiO4 film cathode
  • Preparation method of solid oxide fuel cell Ln2NiO4 film cathode
  • Preparation method of solid oxide fuel cell Ln2NiO4 film cathode

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specific Embodiment approach 1

[0020] Specific implementation mode 1: The solid oxide fuel cell Ln of this implementation mode 2 NiO 4 The preparation method of the thin film cathode is specifically prepared according to the following steps:

[0021] 1. Mix and grind the rare earth oxide and NiO powder evenly, control the pressure at 100MPa-200MPa for steel mold pressing, and obtain a target precursor with a diameter of 60mm and a thickness of 5mm, and then put the target precursor in a high temperature In the furnace, the temperature is controlled at 800 ° C to 1000 ° C, and the sintering time is 8 hours to obtain Ln for sputtering thin films. 2 NiO 4 target;

[0022] Second, the solid electrolyte Ce 0.9 Gd 0.1 o 1.95 The powder is pressed into a steel mold at a pressure of 200MPa to 250MPa to obtain a substrate precursor with a diameter of 15mm and a thickness of 1mm, and then put the substrate precursor into a high-temperature furnace with a controlled temperature of 1400°C and a sintering time of ...

specific Embodiment approach 2

[0031] Specific embodiment two: this embodiment is the same as specific embodiment one: in step one, the control pressure is 150MPa to carry out steel mold pressing. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment is the same as Embodiment 1: in step 1, the temperature is controlled at 900°C. Others are the same as in the first embodiment.

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Abstract

Relating to solid oxide fuel cells, the invention provides a preparation method of a solid oxide fuel cell Ln2NiO4 film cathode so as to solve the problem that existing solid oxide fuel cell powder cathode materials have large contact resistance with a solid electrolyte interface. The method includes: 1. preparing an Ln2NiO4 target material used for film sputtering; 2. preparing a Ce0.9Gd0.1O1.95 electrolyte substrate used for film sputtering; 3. placing the Ce0.9Gd0.1O1.95 electrolyte substrate and the Ln2NiO4 target material, and conducting vacuum pumping; 4. preparing a film; and 5. placing the film into a muffle furnace to conduct treatment. The film cathode material prepared by the invention is in a temperature range of 500DEG C-700DEG C, and has high electrochemical properties. The electrode volume and weight are small. And compared with traditional powder cathodes, the solid oxide fuel cell Ln2NiO4 film cathode has low polarization resistance.

Description

technical field [0001] The present invention relates to solid oxide fuel cells. Background technique [0002] As a new type of energy conversion device, solid oxide fuel cell is attracting more and more attention from various countries because of its advantages of high efficiency and cleanliness. Conventional solid oxide fuel cells suffer from poor stability and short lifetime due to their high operating temperature. The reduction of the operating temperature of the battery will cause a rapid decline in the performance of the electrode, and the performance of the cathode material directly affects the quality of the entire battery system. The existing solid oxide fuel cell powder cathode material electrode has the problem of high interface contact resistance with the solid electrolyte. Contents of the invention [0003] The present invention aims to solve the problem of large interface contact resistance between the powder cathode material electrode and the solid electrol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90H01M8/10C23C14/35
CPCY02E60/50
Inventor 李强赵辉孙丽萍霍丽华
Owner 黑龙江慧然科技有限公司
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