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A method for preparing nio/apatite type lanthanum silicate submicro-nano porous anode functional layer

A nanoporous, functional layer technology, applied in sustainable manufacturing/processing, battery electrodes, final product manufacturing, etc., can solve problems such as the unsatisfactory porous anode functional layer, and achieve the effect of increasing the three-phase reaction interface

Active Publication Date: 2021-12-03
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A method for preparing nio/apatite type lanthanum silicate submicro-nano porous anode functional layer
  • A method for preparing nio/apatite type lanthanum silicate submicro-nano porous anode functional layer
  • A method for preparing nio/apatite type lanthanum silicate submicro-nano porous anode functional layer

Examples

Experimental program
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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 submicro-nano porous anode functional layer, which adopts functional layer nanopowder, ethyl cellulose and terpineol to be added to a container filled with absolute ethanol In a rotary evaporator, ultrasonically disperse the mixed suspension; use a rotary evaporator to remove absolute ethanol in the suspension, and when the suspension becomes a viscous paste, take out the paste and grind it to complete the function Layer slurry preparation. Brush the functional layer slurry on the anode substrate, brush three layers, perform corresponding heat treatment and sintering after drying, control the heating and cooling rate and holding time during the heating process, and make the anode functional layer. The benefit of the present invention is that the prepared NiO / apatite type lanthanum silicate submicro-nano porous anode functional layer has a maximum pore size of less than 1 μm and a smooth surface without cracks, and is prepared several microns thick by magnetron sputtering on it. The dense electrolyte film provides the substrate; the functional layer contains a large number of nanometer pores to greatly increase the three-phase interface.

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 Patents(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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