Unlock instant, AI-driven research and patent intelligence for your innovation.
Method used for improving electrochemical performance of oxygen electrode of solid-oxide battery
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A solid oxide, oxygen electrode technology, applied in the field of electrochemistry, can solve the problems of harsh processing conditions, difficult control process, damage to the body of the electrode material, etc. active effect
Inactive Publication Date: 2014-08-06
TSINGHUA UNIV
View PDF3 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] At present, the acid method is commonly used to treat strontium-doped perovskite materials to change their surface chemical properties, but the acid treatment will cause damage to the body of the electrode material, and the requirements for the treatment conditions are harsh, so it is difficult to control the process, and the obtained modification Electrode electrochemical performance is unstable, not suitable for industrial scale-up
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0043] Regarding the oxygen electrode layer used in solid oxide batteries, it should be understood that the preparation method of the oxygen electrode layer is not particularly limited, for example, it may include: screen printing, spin coating, dip coating, electrodeposition, vapor deposition, pulse Laser deposition, ion implantation, etc.
[0044] Sintering the oxygen electrode layer and the electrolyte can obtain a solid oxide battery. Wherein, the oxygen electrode layer may be made of strontium-doped perovskite material, and the material of the electrolyte may be an ion-conducting ceramic material. Preferably, the ion-conducting ceramic material includes yttria-stabilized zirconia, rare earth doped oxide Lanthanum gallate doped with cerium and strontium magnesium. Considering the different preparation methods of the oxygen electrode layer, the sintering temperature may be 350-1600°C.
[0045] The specific operation of step c) is not particularly limited, as long as the o...
Embodiment 1
[0052] Take a symmetrical disc battery (such as figure 2 with image 3 shown), the electrolyte 10 of the battery is yttria-stabilized zirconia, and the oxygen electrode layer 20 is a composite porous structure of strontium-doped perovskite material / strontium-doped lanthanum manganate.
[0053] Dissolve 0.032 g of sodium hydroxide in 80 ml of deionized water and heat to 100°C; put the battery in the hot alkali solution for 15 minutes and take it out; wash the battery with deionized water and dry it in an oven at 100°C.
Embodiment 2
[0055] Take a symmetrical disc battery (such as figure 2 with image 3 shown), the electrolyte 10 of the battery is yttria-stabilized zirconia, and the oxygen electrode layer 20 is a composite porous structure of strontium-doped perovskite material / strontium-doped lanthanum manganate.
[0056] Dissolve 12.8 grams of sodium hydroxide in 37 ml of deionized water and heat to 100°C; put the battery in the hot alkali solution for 12 hours and take it out; wash the battery with deionized water and dry it in an oven at 100°C.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses a method used for improving the electrochemical performance of an oxygen electrode of a solid-oxide battery. The method comprises the following steps that: a) aqueous alkali is supplied and preheated; b) an oxygen electrode layer used for the solid-oxide battery is supplied; c) the oxygen electrode layer is placed in the preheated aqueous alkali and stands for the preset time for reaction; and d) the oxygen electrode after being reacted is taken out and is heated, so as to obtain a modified oxygen electrode. According to the method used for improving the electrochemical performance of the oxygen electrode of the solid-oxide battery in the embodiment provided by the invention, the surface chemical property of strontium mixed with perovskite materials can be changed through thermokalite treatment, so as to improve the surface activity of the material and the electrochemical performance of the final electrode; in addition, in the method, a body of the material of the electrode can not be damaged, the requirements on treatment conditions are not severe, and therefore, the method is easily controlled, the electrochemical performance of the obtained modified electrode is stable, and the method is suitable for industrial amplification.
Description
technical field [0001] The invention relates to the technical field of electrochemistry, and more particularly, the invention relates to a method for improving the electrochemical performance of an oxygen electrode in a solid oxide battery. Background technique [0002] Strontium-doped perovskite materials are widely used as oxygen electrodes in solid oxide batteries due to their high electronic (and ionic) conductivity and catalytic activity for the reduction of oxygen (or oxidation of oxygen ions). Studies have shown that the surface properties of the material significantly affect the electrochemical performance of the electrode. [0003] At present, the acid method is commonly used to treat strontium-doped perovskite materials to change their surface chemical properties, but the acid treatment will cause damage to the body of the electrode material, and the requirements for the treatment conditions are harsh, so it is difficult to control the process, and the obtained mod...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More