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

Active Publication Date: 2021-05-04
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the NiO / apatite-type lanthanum silicate porous anode functional layer prepared at present is not ideal.

Method used

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

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Embodiment

[0037] Example: Preparation of NiO / apatite-type lanthanum silicate submicron-nanoporous anode functional layer

[0038] In this embodiment, the preparation of the NiO / apatite type lanthanum silicate submicron-nanoporous anode functional layer includes the following steps:

[0039]The first step: prepare functional layer powder, weigh 80nm apatite type lanthanum silicate (La 10 Si 5.8 Mg 0.2 o 26.8 ) nanopowder, 30nm NiO nanopowder, where La 10 Si 5.8 Mg 0.2 o 26.8 The nano powder is prepared according to the Chinese invention patent CN201310357158.X; absolute ethanol is added into the ball mill tank, and the weighed apatite-type lanthanum silicate nano powder and NiO nano powder are put into the ball mill tank and mixed by ball milling to obtain Suspension; Specifically, the ball material in the ball mill jar is agate;

[0040] Step 2: Pour the suspension obtained after mixing the ball mill into a container, put it into a constant temperature drying oven, dry it at 55°...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/12
CPCH01M4/8835H01M4/8657H01M8/12H01M2008/1293H01M2004/8684H01M4/8605Y02P70/50
Inventor 项礼魏育航
Owner DALIAN UNIV OF TECH
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