Mixed titanate support solid electrolyte multilayer film of solid oxide fuel cell and manufacturing method thereof

Abstract

The invention relates to a mixed titanate support solid electrolyte multilayer film of a solid oxide fuel cell and a manufacturing method of the mixed tianate support solid electrolyte multilayer film of the solid oxide fuel cell. The multilayer film is formed by a transition layer film and an electrolytic layer film which are sequentially formed through depositing on an anode main electronic conduction phase and a structural framework increase phase; the anode main electronic conduction phase is porous perovskite type mixed titanate composite oxides; and the structural framework increase phase is aluminum oxide or mixed zirconium oxide or mixture of the aluminum oxide and the mixed zirconium oxide. The manufacturing method provided by the invention comprises the steps: combining the casting method and the screen printing method, adopting the casting method to manufacture a support green body, adopting the screen printing method to respectively form the transition layer and the electrolytic layer on the support green body through depositing, and firing the support green body, the transition layer and the electrolytic layer at certain temperature to obtain the multilayer film with different dimensions. Compared with the prior art, the porous anode support formed in the invention keeps stable structure in reducing atmosphere for a long time, has high electronic conductivity, can be subjected to oxidation-reduction circulation for many times, resists carbon deposition and has sulfur resisting property.

Description

technical field [0001] The invention relates to a method in the technical field of fuel cells, in particular to a solid oxide fuel cell doped titanate-supported solid electrolyte multilayer film and a preparation method thereof. Background technique [0002] Solid Oxide Fuel Cell (Solid Oxide Fuel Cell, SOFC) is an all-solid-state power generation device that directly converts the chemical energy in the fuel into electrical energy through an electrochemical reaction. The conversion process has many advantages, among which the outstanding advantage is the wide applicability of fuel, that is, hydrogen, carbon monoxide and hydrocarbons can be used as fuel, so hydrogen, carbon monoxide, natural gas, liquefied petroleum gas, coal gas, biomass can be widely used Various hydrocarbon fuels such as gas, methanol and ethanol. Solid oxide fuel cells have a wide range of applications, and their main applications include distributed power stations, household power stations, vehicle auxi...

AI Technical Summary

Problems solved by technology

However, since the skeleton of the porous anode structure has been sintered at high temperature, it is difficult to prepare a dense electrolyte film by using a low-cost, high-efficiency, and large-scale continuous production ceramic film-forming method.

On the one hand, the skeleton of the porous anode structure is difficult to shrink further at high temperature, which limits the shrinkage and compactness of the electrolyte film deposited on it; will grow larger, resulting in a decrease in its activity

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