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A kind of middle temperature solid oxide fuel cell electrolyte and preparation method thereof

A solid oxide and fuel cell technology, applied in fuel cells, electrolyte immobilization/gelation, circuits, etc., can solve the problem that the electrolyte cannot be applied to medium and low temperature conditions, and achieve low equipment requirements, low sintering temperature, and high conductivity rate effect

Inactive Publication Date: 2018-09-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional electrolytes are no longer suitable for medium and low temperature conditions, so it is necessary to seek electrolytes with high conductivity at medium and low temperatures

Method used

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  • A kind of middle temperature solid oxide fuel cell electrolyte and preparation method thereof
  • A kind of middle temperature solid oxide fuel cell electrolyte and preparation method thereof
  • A kind of middle temperature solid oxide fuel cell electrolyte and preparation method thereof

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Embodiment 1

[0031] 1 mole of Ce 0.9 Gd 0.08 In 0.02 o 1.95 Preparation of:

[0032] Weigh 0.02 moles of In(NO 3 ) 3 4.5H 2 O: 0.02*381.92= 7.6384 grams,

[0033] Weigh 0.9 mol Ce(NO 3 ) 3 ·6H 2 O: 0.9*434.22 = 390.798 grams,

[0034] Weigh 0.04 moles of Gd 2 o 3 : 0.04*362.5=14.5 grams,

[0035] Weigh citric acid: 4*210.14=840.56 grams;

[0036] Ce(NO 3 ) 3 ·6H 2 O and citric acid and In(NO 3 ) 3 4.5H 2 O was dissolved in distilled water to obtain solution 1;

[0037] Dilute the Gd with dilute nitric acid 2 o 3 Dissolved as nitrate to obtain solution 2;

[0038] Pour solution 1 and solution 2 together, add ammonia water dropwise to adjust the pH value to 7;

[0039] Put the mixed solution into a stirrer and heat it to 45°C, stir continuously at 45°C, and keep the pH value of the solution at 7 by adding ammonia water during the stirring process until a gel is formed;

[0040] Move the gel into an evaporating dish and heat it on an electric furnace until self-propag...

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Abstract

The invention belongs to the field of preparation of solid electrolytes, and particularly relates to an electrolyte for an intermediate-temperature solid oxide fuel cell and a preparation method of the electrolyte. The electrolyte is solid oxide powder of which the chemical formula is Ce<0.9>Gd<0.08>In<0.02>O<1.95>. The electrolyte for the cell is prepared by a nitrate gel combustion method; the relative compactness reaches 100%; and the ionic conductivity of the electrolyte in a humid air atmosphere (3% H<2>O) at 700 DEG C is 0.01S / cm.

Description

technical field [0001] The invention belongs to the field of preparation of solid electrolytes, in particular to a medium temperature solid oxide fuel cell electrolyte and a preparation method thereof. Background technique [0002] Energy is the lifeblood of a country's national economic development, and it is also an important indicator to measure the degree of civilization development, people's living standards and the country's comprehensive national strength. In recent years, my country's national strength has grown by leaps and bounds, and the demand for energy has also increased dramatically. The currently used fossil fuels (such as oil and coal) not only have low combustion efficiency, but also cause pollution to the environment and unsustainable development. Therefore, the need for new energy development is imminent. The solid oxide fuel cell (SOFC) directly converts the chemical energy in fossil fuels into electrical energy through an electrochemical reaction proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1016
CPCH01M8/1016H01M2300/0085Y02E60/50
Inventor 彭开萍陈嘉翔刘杭
Owner FUZHOU UNIV