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Quantum dot electrolyte membrane of solid oxide fuel cell and preparation method

A solid oxide, fuel cell technology, used in fuel cells, circuits, electrical components, etc., can solve the problems of difficult battery sealing, long start-up time, and narrow selection of battery materials, and achieve good ionic conductivity and excellent crystal phase. Effects of Interface and Dimensional Defects

Inactive Publication Date: 2018-07-20
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the operating temperature of high-temperature solid oxide fuel cells exceeding 750°C, the control is difficult, the start-up time is long, etc., the higher operating temperature will result in narrow selection of battery materials, interfacial reactions between electrodes and electrolytes, and difficult battery sealing And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of low softening point glass containing zinc, tungsten, barium, and tellurium oxides: heating the glass with a softening point of 360°C to 400°C and adding zinc oxide, tungsten oxide, barium oxide, and tellurium oxide The mixture was kept heated at 400°C for 15min; (2) Quantum dot CeO was prepared by aqueous phase synthesis quantum dot method 2 (3) Quantum dot CeO 2 Mix with the low softening point glass containing zinc, tungsten, barium and tellurium oxides in step (1), then grind the mixture at 370°C, and coat the glass with quantum dots CeO 2 , forming quantum dots with a core-shell structure; (4) depositing the quantum dots with a core-shell structure on a glass base film with a thickness of 850 nanometers through vapor phase deposition; On the base film, the power density of laser welding is 104W / cm 2 , to obtain a solid oxide fuel cell quantum dot electrolyte membrane. The ionic conductivity of the quantum dotted electrolyte membrane of the soli...

Embodiment 2

[0046] (1) Preparation of low softening point glass containing zinc, tungsten, barium, and tellurium oxides: heating the glass with a softening point of 370°C to 420°C and adding zinc oxide, tungsten oxide, barium oxide, and tellurium oxide The mixture was kept heated at 420°C for 10min; (2) Quantum dot CeO was prepared by aqueous phase synthesis quantum dot method 2 (3) Quantum dot CeO 2 Mix with the low softening point glass described in step (1), then grind the mixture at 380°C, and coat the glass with quantum dots CeO 2 , forming quantum dots with a core-shell structure; (4) depositing the quantum dots with a core-shell structure on a glass base film with a thickness of 890 nanometers through vapor phase deposition; On the base film, the power density of laser welding is 105W / cm 2 , to obtain a solid oxide fuel cell quantum dot electrolyte membrane. The ionic conductivity of the quantum dotted electrolyte membrane of the solid oxide fuel cell in an environment of 350° C...

Embodiment 3

[0048] (1) Preparation of low softening point glass containing zinc, tungsten, barium, and tellurium oxides: heating the glass with a softening point of 400°C to 450°C and adding zinc oxide, tungsten oxide, barium oxide, and tellurium oxide The mixture was kept heated at 450°C for 20min; (2) Quantum dot CeO was prepared by aqueous phase synthesis quantum dot method 2 (3) Quantum dot CeO 2 Mix with the low softening point glass described in step (1), then grind the mixture at 400°C, and coat the glass with quantum dots CeO 2 , forming quantum dots with a core-shell structure; (4) vapor-depositing quantum dots with a core-shell structure on a glass base film with a thickness of 900 nanometers; On the base film, the power density of laser welding is 105W / cm 2 , to obtain a solid oxide fuel cell quantum dot electrolyte membrane. The ionic conductivity of the quantum dotted electrolyte membrane of the solid oxide fuel cell at 350° C. is shown in Table 1.

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Abstract

The invention relates to the field of electrolyte membrane materials, in particular to a quantum dot electrolyte membrane of a solid oxide fuel cell and a preparation method. The preparation method ofthe quantum dot electrolyte membrane of the solid oxide fuel cell comprises the following steps of: (1) heating low softening point glass to 400-450 DEG C, adding a mixture of zinc oxide, tungsten oxide, barium oxide and tellurium oxide, holding at 400-450 DEG C for 10-30min, (2) preparing a quantum dot CeO2, (3) mixing the quantum dot CeO2 and the low softening point glass, performing high temperature grinding on a mixture to form a quantum dot in a shell-core structure, and (4) welding the quantum dot in the shell-core structure onto a glass base membrane via vapor deposition and laser welding to form the quantum dot electrolyte membrane of the solid oxide fuel cell. The electrolyte membrane significantly shows good ionic conductivity in an environment at 350 DEG C.

Description

technical field [0001] The invention relates to the field of electrolyte membrane materials, in particular to a solid oxide fuel cell quantum dot electrolyte membrane and a preparation method. Background technique [0002] Solid oxide fuel cells have high efficiency and excellent long-term performance stability without the need for catalysts and can significantly reduce system costs. Since solid oxide is used as the electrolyte, it has no problems such as electrolyte corrosion; the fuel has wide adaptability, and hydrogen, CO, natural gas (methane), coal gasification gas, hydrocarbons, etc. can be used as fuel. However, due to the operating temperature of high-temperature solid oxide fuel cells exceeding 750°C, the control is difficult, the start-up time is long, etc., the higher operating temperature will result in narrow selection of battery materials, interfacial reactions between electrodes and electrolytes, and difficult battery sealing And other issues. [0003] Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1016
CPCH01M8/1016Y02E60/50
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD