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

preparation method of composite anode by one-dimensional nano fibrous lanthanum strontium titanate (LST) anode material

A nanofiber, anode material technology, applied in fuel cells, battery electrodes, solid electrolyte fuel cells, etc., can solve problems such as carbon deposition anode materials, achieve high electron conductivity, improve anode thermal cycle stability, and good sulfur resistance. sexual effect

Active Publication Date: 2015-02-11
HARBIN INST OF TECH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of reasonable selection and preparation technology of anode materials such as the reduction of the three-phase interface caused by the phenomenon of carbon deposition on the Ni-based anode and the phenomenon of Ni agglomeration caused by sulfur poisoning when the SOFC uses carbon-based fuels, which affects the working performance of the electrode. and other problems, and provides a method for preparing a composite anode using a one-dimensional nanofibrous LST anode material

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
  • preparation method of composite anode by one-dimensional nano fibrous lanthanum strontium titanate (LST) anode material
  • preparation method of composite anode by one-dimensional nano fibrous lanthanum strontium titanate (LST) anode material
  • preparation method of composite anode by one-dimensional nano fibrous lanthanum strontium titanate (LST) anode material

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0029] Specific embodiment one: the chemical formula of the one-dimensional nanofibrous LST anode material of the present embodiment is La x Sr 1-x TiO 3 , wherein 0≤x≤0.4, the structure of the one-dimensional nanofibrous anode material is one-dimensional nanofiber.

specific Embodiment approach 2

[0030] Specific embodiment two: the preparation method of the one-dimensional nanofibrous LST anode material of the present embodiment is as follows:

[0031] 1. Preparation of electrospinning precursor solution: according to the chemical formula La x Sr 1-x TiO 3 , 0≤x≤0.4, weigh lanthanum nitrate, strontium nitrate and tetrabutyl titanate respectively according to the molar ratio of La element, Sr element and Ti element as x:1-x:1, and then add lanthanum nitrate and strontium nitrate Add it into N,N-dimethylformamide, stir magnetically at room temperature until the lanthanum nitrate and strontium nitrate are completely dissolved, then add polyvinylpyrrolidone and stir for 6-8 hours to obtain a mixed solution, add concentrated nitric acid to adjust the pH value of the mixed solution to 4-6, then add tetrabutyl titanate, continue to stir until the mixed solution becomes transparent, and obtain the electrospinning precursor solution;

[0032] The total mass concentration of ...

specific Embodiment approach 3

[0035] Embodiment 3: This embodiment differs from Embodiment 2 in that: the total mass concentration of samarium nitrate, strontium nitrate and tetrabutyl titanate in the electrospinning precursor solution in step 1 is 8-25%. Others are the same as in the second embodiment.

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 one-dimensional fibrous lanthanum strontium titanate (LST) anode material, a preparation method thereof, a composite anode utilizing the anode material and a preparation method of the composite anode, and relates to an anode material, a composite anode and a preparation method. The invention aims at solving the problems of reasonability in selection of the anode material and insufficiency in preparation technique that when a solid oxide fuel cell (SOFC) utilizes carbon-based fuel, the reduction of a three-phase interface caused by the carbon precipitation phenomenon and the clustering phenomenon of nickel after being deactivated by sulfur compounds on a nickel-based anode influences the working performances of the electrode. The one-dimensional fibrous LST anode material is LaxS(r1-x)TiO3 and obtained by preparing one-dimensional nano fibers through an electrostatic spinning technique and then sintering the one-dimensional nano fibers. The one-dimensional fibers are made into anode slurry to be coated on an electrolyte, cathode or anode supporting body, and a one-dimensional fibrous LST-based LST-GDC composite anode is prepared by adopting a method for combining the electrostatic spinning technique and dipping electrolyte precursor solution. The composite anode can be used in a low-medium-temperature solid oxide fuel cell.

Description

technical field [0001] The invention relates to an anode material, a composite anode and a preparation method thereof. Background technique [0002] Fossil fuels represented by coal, oil, and natural gas are the main energy resources in China (proportion >90%) and even the world (proportion >80%), and their average power generation efficiency is only about 30%, which urgently needs to be improved. One of the outstanding advantages of solid oxide fuel cells (SOFC) is that they can directly use fossil fuels, such as gaseous natural gas, coal-related gasification gas, coke oven gas and coal bed methane, etc., liquid gasoline, aviation diesel and alcohols, etc. , and solid coke and coal, etc. These fuels are mainly composed of carbon-containing compounds, and are collectively referred to as carbon-based fuels here. Carbon-based fuel SOFC is an effective way to achieve efficient conversion and clean utilization of fossil fuels. Compared with coal-fired power generation te...

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): H01M8/12H01M4/86H01M4/88H01M8/1213
CPCY02E60/521Y02E60/525Y02E60/50
Inventor 熊岳平樊丽权王宇威张锦秋贾铮赵力
Owner HARBIN INST OF TECH
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