Supercharge Your Innovation With Domain-Expert AI Agents!

Electrolyte membrane, electrochemistry device and solid oxide fuel cell

An electrolyte diaphragm and solid oxide technology, applied in the field of electrochemistry, can solve the problems that the electrolyte diaphragm can only meet the strength requirements, and the electrolyte diaphragm cannot take into account the strength and electrical properties, and achieves the effect of meeting the strength requirements and the electrical properties requirements.

Active Publication Date: 2013-10-23
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of a single-material electrolyte diaphragm is that it can only meet the requirements for strength or electrical performance, and cannot make the electrolyte diaphragm meet the dual requirements of strength and electrical performance.

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
  • Electrolyte membrane, electrochemistry device and solid oxide fuel cell
  • Electrolyte membrane, electrochemistry device and solid oxide fuel cell
  • Electrolyte membrane, electrochemistry device and solid oxide fuel cell

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The present invention also provides the preparation method of the electrolyte diaphragm, comprising: laminating the strength-enhanced electrolyte diaphragm layer strip and the high ion conductivity electrolyte diaphragm layer strip according to a preset method and thickness, and the preset method can be alternating Laminating together, after laminating the strength-enhanced electrolyte diaphragm layer strip and the high ion conduction electrolyte diaphragm layer strip, pre-pressing is performed to obtain a pre-pressed part. The present invention does not specifically limit the pressure when applying the preload, but it is preferably 5 MPa to 20 MPa, more preferably 8 MPa to 15 MPa.

[0035] According to the present invention, the prepress can be put into a vacuum bag for vacuum treatment to remove the residual gas in the prepress, and then the preform after vacuum treatment can be press-molded to obtain a molded piece, which is preferably placed The compression molding ...

Embodiment 1

[0049] A film containing 10mol% Sc with a thickness of about 50 μm was prepared by casting method 2 o 3 and 1mol% CeO 2 ZrO 2 Strip material (hereinafter referred to as 10Sc1CeSZ); the tape-casting method is used to prepare a strip containing 3mol% Y with a thickness of about 50 μm 2 o 3 ZrO 2 Strip (hereinafter referred to as 3YSZ).

[0050] Such as figure 1 As shown, three 10Sc1CeSZ strips 101 and two 3YSZ strips 102 are alternately stacked together, and a pressure of 8 MP is applied for pre-pressing to obtain a pre-press; put the pre-press into a vacuum bag to evacuate, Then, isostatic pressing under a pressure of 50 MPa to obtain a molded part; the molded part was sintered in an air atmosphere at 1450° C. for 4 hours to obtain an electrolyte membrane with a thickness of about 210 μm.

[0051] The bending strength of the electrolyte membrane measured at room temperature is 478MPa, and the conductivity of the electrolyte membrane measured at 800°C is 0.061S / cm.

Embodiment 2

[0053] A film containing 10mol% Sc with a thickness of about 40 μm was prepared by casting method 2 o 3 and 1mol% CeO 2 ZrO 2 Strip material (hereinafter referred to as 10Sc1CeSZ); adopt tape casting method to prepare about 20 μm thickness containing 5mol% Y 2 o 3 ZrO 2 Strip (hereinafter referred to as 5YSZ).

[0054] Take five 10Sc1CeSZ strips and four 5YSZ strips and stack them together alternately, apply a pressure of 15MP for pre-press molding to obtain a pre-press; put the pre-press into a vacuum bag to vacuum, and then press the pressure of 150MPa The molding is obtained by isostatic pressing; the molding is sintered in an air atmosphere at 1450° C. for 5 hours to obtain an electrolyte membrane with a thickness of about 240 μm.

[0055] The bending strength of the electrolyte membrane measured at room temperature is 456MPa, and the conductivity of the electrolyte membrane measured at 800°C is 0.069S / cm.

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

PropertyMeasurementUnit
bending strengthaaaaaaaaaa
electrical conductivityaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides an electrolyte membrane, which comprises at least one strength enhanced electrolyte membrane layer and a high ionic conductance electrolyte membrane layer, wherein the flexural strength of the strength enhanced electrolyte membrane layer is more than 300 MPa, and the ionic conductivity of the high ionic conductance electrolyte membrane layer at 800 DEG C is more than 0.03 S / cm. Compared with the prior art, the electrolyte membrane provided by the invention has the advantages that: the strength enhanced electrolyte membrane layer can enhance the strength of the electrolyte membrane, and high ionic conductance electrolyte membrane layer can enhance the electrical property of the electrolyte membrane; therefore, the electrolyte membrane layers provided by the invention can meet the requirements of both strength and electrical property.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to an electrolyte membrane and an electrochemical device comprising the electrolyte membrane. Background technique [0002] The electrolyte diaphragm is the core component of electrochemical devices such as solid oxide fuel cells (SOFC), oxygen sensors, oxygen pumps, and temperature sensors, where the main electrochemical reactions take place. Among the above electrochemical devices, the solid oxide fuel cell is an energy conversion device that directly converts chemical energy into electrical energy. It has significant advantages such as high efficiency, no pollution, and all solid state, and has broad application prospects in many fields. [0003] A solid oxide fuel cell power generation system generally consists of multiple battery stacks, and each battery stack is assembled from dozens of single cells. Generally, a single solid oxide fuel cell includes at least three f...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M2/16H01M8/10H01M8/0202H01M8/1009
CPCY02E60/12Y02E60/521Y02E60/50
Inventor 王蔚国王建新薛业建李华民
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com