Method for preparing NiO/apatite type lanthanum silicate submicron-nano porous anode functional layer

A nanoporous, functional layer technology, applied in the direction of sustainable manufacturing/processing, battery electrodes, final product manufacturing, etc., can solve the problem of unsatisfactory porous anode functional layers, and achieve the effect of increasing the three-phase reaction interface
CN112751041AActive Publication Date: 2021-05-04DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2021-05-04

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Abstract

The invention relates to a method for preparing a NiO / apatite type lanthanum silicate submicron-nano porous anode functional layer. The method comprises the following steps of: adding functional layer nano powder, ethyl cellulose and terpilenol into a rotary evaporation bottle filled with absolute ethyl alcohol, and carrying out ultrasonic dispersion on the mixed suspension; removing absolute ethyl alcohol in the turbid liquid by adopting a rotary evaporator, and when the turbid liquid becomes thick paste, taking out the paste and grinding to finish the preparation of the functional layer slurry; and brushing the functional layer slurry on an anode base body for three layers, carrying out corresponding heat treatment and sintering after drying the functional layer slurry, controlling the heating and cooling rate and the heat preservation time in the heating process, and manufacturing the anode functional layer. The method has the advantages that the maximum aperture of the prepared NiO / apatite type lanthanum silicate submicron-nano porous anode functional layer is smaller than 1 micron, the surface is smooth and free of cracks, and a substrate is provided for preparing a compact electrolyte film with the thickness of several microns on the NiO / apatite type lanthanum silicate submicron-nano porous anode functional layer through magnetron sputtering; and the functional layer contains a large number of nano pores, so that the three-phase interface is greatly increased.
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Description

technical field

[0001] The invention belongs to the field of solid oxide fuel cells, and relates to a method for preparing a submicron-nano porous anode functional layer, in particular to a method for preparing a NiO / apatite type lanthanum silicate submicron-nano porous anode functional layer, Wherein the apatite-type lanthanum silicate includes various doped apatite-type lanthanum silicates. Background technique

[0002] Solid Oxide Fuel Cells (Solid Oxide Fuel Cells, SOFCs) is an electrochemical device with an all-solid structure, which can directly convert the chemical energy of the fuel into electrical energy through an electrochemical reaction, and has a high utilization rate of the fuel, and is clean and environmentally friendly. Broad application prospects.

[0003] Solid oxide fuel cells are mainly composed of porous anode, porous cathode and dense electrolyte. Since conventional solid oxide fuel cells operate at temperatures above 800 °C, high temperatures lead to...

Claims

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