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Connector of self-sealing flat plate type solid oxygenated fuel cell and preparation method

A fuel cell and self-sealing technology, which is applied to fuel cell parts, fuel cells, sealing/supporting devices, etc., can solve the problems of high temperature sealing difficulty and large sealing area, simplifying the manufacturing process and overcoming the sealing problem. , reduce the effect of commercial promotion

Active Publication Date: 2017-03-29
浩燃科技(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of planar SOFC is that the area to be sealed is large, and it is difficult to seal at high temperature

Method used

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  • Connector of self-sealing flat plate type solid oxygenated fuel cell and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] in a 10×10cm 2 Process a gas channel 1-2 and a 9×9×1cm on the metal connecting body 1-1 3 First use strontium oxide to fill the gas channel 1-2, then inject the mixture of stainless steel powder and brazing filler metal into the groove, fill it up and compact it, and braze it at a temperature higher than the battery’s working temperature, and obtain porous after brazing The metal layer 1-3; the surface of the porous metal layer 1-3 is machined into a plane. Immersing the integrated metal connection in water dissolves the strontium oxide in the gas path. Finally, the Ni / YSZ anode, YSZ electrolyte layer, and LSM cathode were sequentially prepared by atmospheric plasma spraying, and the test cells exhibited good voltage and power output.

Embodiment 2

[0034] in a 19×19cm 2 Process a gas passage 1-2 and a 18×18×0.8cm on the metal connecting body 1-1 3 Firstly, strontium oxide is used to fill the gas channel, and then the mixture of stainless steel powder and pore-forming agent is injected into the groove, filled and compacted, and sintered at a temperature higher than the working temperature of the battery. After sintering, a porous metal layer is obtained 1-3 ; The surface of the porous metal layer 1-3 is machined into a plane. Immerse the integral terminal in water to dissolve the strontium oxide in the gas path. Finally, the Ni / YSZ anode, YSZ electrolyte layer, and LSCF cathode were sequentially prepared by atmospheric plasma spraying, and the test cell exhibited good voltage and power output.

Embodiment 3

[0036] in a 21×21cm 2 A gas passage and a 20×20×1cm 3 The grooves are filled with strontium oxide first, and then the mixture of stainless steel powder and pore-forming agent is melted by selective laser melting technology to form a porous metal layer 1-3 in the groove; the surface of the porous metal layer 1-3 is machined into a flat. Immerse the integral terminal in water to dissolve the strontium oxide in the gas path. Finally, the Ni / ScSZ anode, ScSZ electrolyte layer, and LSCF cathode were sequentially prepared by atmospheric plasma spraying, and the test cell exhibited good voltage and power output.

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Abstract

The invention discloses a connector of a self-sealing flat plate type solid oxygenated fuel cell and a preparation method. The connector comprises a metal connecting pole and a porous metal layer, wherein a gas passage is arranged on one side of the metal connecting pole; a groove is formed in the side, provided with the gas passage, of the metal connecting pole, and the porous metal layer is arranged in the groove. A connector and supporting metal integrated structure of the self-sealing flat plate type solid oxygenated fuel cell is prepared through a method that a shelter is finally removed through sheltering and powder metallurgy on one side of the interior of the connecting pole. A cell functional layer is prepared on the integrated structure, self-sealing of the cell can be realized, the manufacturing technique of a cell stack can be greatly simplified, the cell stack does not need the introduction of any additional sealing structure, the problem that the flat plate type solid oxygenated fuel cell is sealed is overcome, the manufacturing cost of the cell is reduced, and the commercial popularization of the cell is facilitated.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to an integrated structure of a connecting body and a supporting metal of a self-sealing flat solid oxidation fuel cell and a preparation method thereof. Background technique [0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) belongs to the third-generation fuel cell, which is an all-solid-state chemical energy that directly converts the chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner at medium and high temperatures. power generation device. The main components of a solid oxide fuel cell are electrolyte, anode or fuel electrode, cathode or air electrode, and connector or bipolar plate. The working principle of solid oxide fuel cells is the same as that of other fuel cells, and is equivalent to the "reverse" device of water electrolysis in principle. Its single cell is composed of anode, cathode and sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0271H01M8/0276H01M8/0286
CPCH01M8/0271H01M8/0276H01M8/0286H01M2008/1293Y02P70/50Y02E60/50
Inventor 李成新高九涛王岳鹏张山林杨冠军李长久
Owner 浩燃科技(中山)有限公司
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