Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Strontium-calcium-codoped lanthanum manganate-based perovskite material, and applications thereof in SOFC

A technology of perovskite material, lanthanum manganate

Active Publication Date: 2017-04-19
HUBEI UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the working temperature of traditional high-temperature SOFC is usually 1000°C, which leads to high material cost, serious material corrosion, and long system startup and shutdown time.

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
  • Strontium-calcium-codoped lanthanum manganate-based perovskite material, and applications thereof in SOFC
  • Strontium-calcium-codoped lanthanum manganate-based perovskite material, and applications thereof in SOFC
  • Strontium-calcium-codoped lanthanum manganate-based perovskite material, and applications thereof in SOFC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of strontium calcium co-doped lanthanum manganate-based perovskite material La 0.1 Sr x Ca 0.9-x MnO 3-δ , x=0.1, the steps include:

[0032] (1) Weighing according to the chemical formula, using lanthanum nitrate, calcium nitrate, strontium nitrate and manganese nitrate as precursors, the preparation concentration is 0.1-3mol L -1 precursor mixed solution.

[0033] (2) Add dropwise an aqueous solution of sodium carbonate with a stoichiometric ratio of 1.1-2 to the above precursor solution, keep the solution in a stirring state during the dropwise addition, continue stirring for 0.5-8h after the dropwise addition, and then let stand for 0.5-20h.

[0034] (3) Suction filtration and washing until the pH is 7-9, drying the obtained precipitate at 50-200° C. for 1-10 h, and then calcining at 700° C. for 4 h to obtain a calcined powder.

[0035] The resulting material looks like figure 1 As shown, the structure is as Figure 4 shown.

Embodiment 2

[0037] Preparation of strontium calcium co-doped lanthanum manganate-based perovskite material La 0.1 Sr x Ca 0.9-x MnO 3-δ , x=0.3, the steps include:

[0038] (1) Weighing according to the chemical formula, using lanthanum nitrate, calcium nitrate, strontium nitrate and manganese nitrate as precursors, the preparation concentration is 0.1-3mol L -1 precursor mixed solution.

[0039] (2) Add dropwise an aqueous solution of sodium carbonate with a stoichiometric ratio of 1.1-2 to the above precursor solution, keep the solution in a stirring state during the dropwise addition, continue stirring for 0.5-8h after the dropwise addition, and then let stand for 0.5-20h.

[0040] (3) Suction filtration and cleaning until the pH is 7-9, drying the obtained precipitate at 50-200° C. for 1-10 hours, and then calcining at 800° C. for 4 hours to obtain a calcined powder.

[0041] The resulting material looks like figure 2As shown, the structure is as Figure 4 shown.

Embodiment 3

[0043] Preparation of strontium-doped lanthanum manganate-based perovskite materials La 0.1 Sr x Ca 0.9-x MnO 3-δ , x=0.5, the steps include:

[0044] (1) Weighing according to the chemical formula, using lanthanum nitrate, calcium nitrate, strontium nitrate and manganese nitrate as precursors, the preparation concentration is 0.1-3mol L -1 precursor mixed solution.

[0045] (2) Add dropwise an aqueous sodium carbonate solution with a stoichiometric ratio of 1.1-2 to the above precursor solution, keep the solution in a stirring state during the dropwise addition, continue stirring for 0.5-8h after the dropwise addition, and then let stand for 0.5-20h.

[0046] (3) Suction filtration and washing until the pH is 7-9, drying the obtained precipitate at 50-200° C. for 1-10 h, and then calcining at 1000° C. for 6 h to obtain a calcined powder.

[0047] The resulting material looks like image 3 As shown, the structure is as Figure 4 shown.

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

No PUM Login to View More

Abstract

The invention relates to a strontium-calcium-codoped lanthanum manganate-based perovskite material used for low temperature solid oxide fuel cells (SOFC), and applications thereof in low temperature SOFC. The material structural formula is La<0.1>Sr<x>Ca<0.9-x>MnO<3-delta>, wherein 0<x<0.9, and delta is a value used for achieving electric neutrality of the compound of the chemical formula. The strontium-calcium-codoped lanthanum manganate-based perovskite material is prepared via coprecipitation method. The strontium-calcium-codoped lanthanum manganate-based perovskite material can be used in SOFC electrolyte layers after mixing with ion conductor materials so as to improve low temperature performance of SOFC obviously, simplify SOFC preparation technology, and reduce La content, and it is beneficial for reducing of battery cost.

Description

technical field [0001] The present invention relates to a lanthanum manganate-based perovskite material and the application of the material in a low-temperature solid oxide fuel cell, more specifically, to a strontium-calcium co-doped lanthanum manganate-based perovskite Application in functional layers of oxide fuel cells. Background technique [0002] Solid oxide fuel cell (SOFC) has the characteristics of high energy conversion efficiency, strong fuel adaptability, cogeneration of heat and power, and clean and pollution-free. However, the working temperature of traditional high-temperature SOFC is usually 1000°C, which leads to problems such as high material cost, serious material corrosion, and long system startup and shutdown time. Reducing the operating temperature can not only reduce the material cost, solve the sealing problem, and achieve fast start-up, but also improve battery stability and prolong battery life, which has become the main development direction of S...

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
IPC IPC(8): H01M8/1246C01G45/12
CPCC01G45/12C01G45/1228C01P2002/72C01P2004/03H01M8/1246Y02E60/50
Inventor 王浚英董文静邓辉朱斌
Owner HUBEI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com