Rare earth, nickel and copper co-doping cerium dioxide/cerium dioxide film and preparing method thereof

Abstract

The invention discloses a rare earth, nickel and copper co-doping cerium dioxide/cerium dioxide film and a preparing method thereof. The preparing method includes the specific steps that firstly, soluble salt, nickel salt, copper salt, rare earth salt, water and ethylene glycol are mixed into an electrolyte; secondly, a cerium sheet serves as an anode, transparent tape is stuck to one face of the cerium sheet, a platinum sheet or a lead sheet serves as a cathode, the anode and the cathode are put into the electrolyte to be subjected to anodizing, and after anodizing is over, an anode oxidization part is obtained; and thirdly, the anode oxidization part is put into a muffle furnace to be roasted, and the film is obtained, wherein the surface of the film is provided with multiple nanometer straight holes, the lower face of the film is provided with compact rare earth, nickel and copper co-doping cerium dioxide, and the other face of the film is provided with cerium dioxide. The preparing method is simple, and the hole length of the multiple nanometer straight holes in the surface of the film ranges from 18 microns to 112 microns, wherein the surface of the film is provided with the multiple nanometer straight holes, and the lower face of the film is provided with compact rare earth, nickel and copper co-doping cerium dioxide.

Description

technical field [0001] The invention relates to a rare earth, nickel and copper co-doped ceria / ceria film and a preparation method thereof, belonging to the technical field of thin films. Background technique [0002] Doped ceria can be used as an electrolyte for solid oxide fuel cells due to its high oxygen storage capacity and oxygen ion conductivity. In the preparation of the anode of the solid oxide fuel cell, the catalyst, electrolyte powder, pore-forming agent, etc. are usually mixed uniformly, and the mixed powder is deposited on the surface of the electrolyte, and then sintered at a temperature above 1000°C. The problems introduced by such a high temperature are: the surface area of ​​the electrode is reduced, and the electrode material particles grow up, thereby reducing the three-phase interface area; some electrodes and electrolytes are prone to phase reactions at high temperatures; some anode materials and electrolytes have different thermal expansion coefficient...

AI Technical Summary

Problems solved by technology

The problems introduced by such a high temperature are: the surface area of ​​the electrode is reduced, and the electrode material particles grow up, thereby reducing the three-phase interface area; some electrodes and electrolytes are prone to phase reactions at high temperatures; some anode materials and electrolytes have different thermal expansion coefficients If the electrode is directly loaded on the electrolyte, it is easy to cause the interface between the electrode and the electrolyte to peel off during long-term operation, resulting in attenuation of battery performance