Doped perovskite electrolyte film for preparing fuel cell by employing hydrogen

Abstract

The invention proposes a doped YZr<0.1>Ba<2>Cu<3>O<6+Delta> perovskite electrolyte film for preparing a fuel cell by employing hydrogen. The doped YZr<0.1>Ba<2>Cu<3>O<6+Delta> perovskite electrolyte film is characterized by being prepared according to the steps of preparing an aqueous solution from a yttrium source, a barium source, a copper source and a zirconium source according to a mole ratioof yttrium, barium, copper and zirconium being 1:2:3:0.1, adding citric acid and EDTA as a complexing agent, adjusting PH to 7.5-8, performing ultrasonic oscillation for 2 hours and then allowing to stand for 6 hours; filtering and drying the complexing agent to generate gel after full complexing, and performing high-temperature sintering on the gel; and performing isostatic compaction to obtain an electrolyte film material after the powder material is washed with ethyl alcohol and ultrasound. The critic acid is used as a crystal inducer, the doped Zr<4+> preferably enters a crystal boundary,a large amount of oxygen vacancies are formed, meanwhile, heterogeneous nucleation under a low temperature can be prevented, so that the oxygen ion transmittance is improved, the problem of poor oxygen ion transmittance of a traditional perovskite material under middle and low temperatures is solved, and the doped perovskite electrolyte film is applicable to a condition with wider working temperature zone.

Description

technical field [0001] The invention relates to the technical field of hydrogen production in the fuel cell industry, in particular to a doped YZr used for hydrogen production 0.1 Ba 2 Cu 3 o 6+δ type perovskite electrolyte membrane. Background technique [0002] Finding new energy carriers that can replace oil and gas has become an important goal of energy development in various countries today. Hydrogen is a non-polluting and renewable energy carrier, and has the characteristics of storage and transportation, which has attracted widespread attention. Hydrogen production by electrolysis of water may become the mainstream of the hydrogen energy industry in the future due to its simple process, high product purity, and easy equipment operation. The electrolytic cells currently on the market can be divided into three types: alkaline electrolytic cells, solid polymer electrolyte electrolytic cells and solid oxide electrolytic cells. Among them, the solid oxide electrolysi...

AI Technical Summary

Problems solved by technology

[0006] For the current YBa 2 Cu 3 o 6+δ It has good oxygen permeability at medium and high temperatures, and has poor oxygen ion transmission efficiency and serious attenuation defects in low temperature environments. The present invention proposes a doped YZr used to prepare hydrogen for fuel cells 0.1 Ba 2 Cu 3 o 6+δ Type perovskite electrolyte membrane and preparation method, thereby realizing improving YBa 2 Cu 3 o 6+δ Oxygen permeability under medium and low temperature conditions, making it suitable for a wide working temperature range