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Vermiculite sealing material for high-temperature fuel cell

A high-temperature fuel cell and sealing material technology, applied in the field of vermiculite sealing materials, can solve problems such as unusability, and achieve the effect of meeting sealing requirements and facilitating operation and maintenance.

Active Publication Date: 2020-02-18
杨云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operating temperature of SOFC fuel cells is generally 650-1000°C, which puts high demands on the sealing materials in the stack of fuel cells, and the traditional rubber and graphite sealing materials have been unable to use

Method used

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  • Vermiculite sealing material for high-temperature fuel cell
  • Vermiculite sealing material for high-temperature fuel cell
  • Vermiculite sealing material for high-temperature fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A vermiculite sealing material for high-temperature fuel cells, mainly composed of the following components: 20% chemically expanded vermiculite, 10% thermally expanded vermiculite, 50% talc, 19% glass fiber, 0.5% graphene oxide, and a dispersant 0.2%, siloxane 0.3%. Vermiculite is used as the main raw material, and talc, glass fiber, graphene oxide and additives are added to prepare the plate, which can withstand high temperatures of 1000 ° C, has sealing and insulating properties, and can meet the sealing requirements of high-temperature fuel cells.

[0044] The preparation method of above-mentioned vermiculite sealing material comprises the following steps:

[0045] S1 raw material mixing: put chemically expanded vermiculite, thermally expanded vermiculite, talc, glass fiber, graphene oxide, dispersant, and siloxane into the feed hopper of the integrated machine according to the above mass ratio;

[0046] S2 homogeneous dispersion: grinding and high-speed dispersion...

Embodiment 2

[0051] A vermiculite sealing material for high-temperature fuel cells, mainly composed of the following components: 40% chemically expanded vermiculite, 23% thermally expanded vermiculite, 20% talc, 15% glass fiber, 1% graphene oxide, and a dispersant 0.5%, siloxane 0.5%. Vermiculite is used as the main raw material, and talc, glass fiber, graphene oxide and additives are added to prepare the plate, which can withstand high temperatures of 1000 ° C, has sealing and insulating properties, and can meet the sealing requirements of high-temperature fuel cells.

[0052] The preparation method of above-mentioned vermiculite sealing material comprises the following steps:

[0053] S1 raw material mixing: put chemically expanded vermiculite, thermally expanded vermiculite, talc, glass fiber, graphene oxide, dispersant, and siloxane into the feed hopper of the integrated machine according to the above mass ratio;

[0054] S2 homogeneous dispersion: grinding and high-speed dispersion o...

Embodiment 3

[0059] A vermiculite sealing material for high-temperature fuel cells, mainly composed of the following components: 55% chemically expanded vermiculite, 30% thermally expanded vermiculite, 5% talc, 4% glass fiber, 2.5% graphene oxide, and a dispersant 1.5%, siloxane 2%. Vermiculite is used as the main raw material, and talc, glass fiber, graphene oxide and additives are added to prepare the plate, which can withstand high temperatures of 1000 ° C, has sealing and insulating properties, and can meet the sealing requirements of high-temperature fuel cells.

[0060] The preparation method of above-mentioned vermiculite sealing material comprises the following steps:

[0061] S1 raw material mixing: put chemically expanded vermiculite, thermally expanded vermiculite, talc, glass fiber, graphene oxide, dispersant, and siloxane into the feed hopper of the integrated machine according to the above mass ratio;

[0062] S2 homogeneous dispersion: grinding and high-speed dispersion of ...

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Abstract

The invention discloses a vermiculite sealing material for a high-temperature fuel cell. The vermiculite sealing material mainly comprises the following components: 20-80% of chemical expanded vermiculite, 0-50% of thermal expanded vermiculite, 0-50% of talc, 0-30% of glass fiber, 0-5% of graphene oxide, 0-5% of a dispersing agent and 0-5% of siloxane. Vermiculite is adopted as a main raw material, the talc, the glass fiber, the graphene oxide, auxiliaries and the like are added to prepare a plate, and the plate can resist the high temperature of 1000 DEG C, has sealing and insulating properties and can meet the sealing requirement of the high-temperature fuel cell.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a vermiculite sealing material for high-temperature fuel cells. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of the fuel into electrical energy. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, and is not affected by the Carnot cycle effect. limit, so the efficiency is high. Therefore, the fuel cell is an energy-saving and environmentally friendly new energy technology. [0003] Due to its high conversion efficiency, the research on high-temperature fuel cells (such as solid oxide SOFC fuel cells) is increasing, which also puts forward higher requirements for the internal sealing of fuel cells. The operating temperature of SOFC fuel cells is generally 650-1000 ° C, which puts forward high requirements on the sealing materials...

Claims

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Application Information

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IPC IPC(8): C04B26/32C04B111/28C04B111/40
CPCC04B26/32C04B2111/00853C04B2111/28C04B2111/40C04B14/185C04B14/042C04B14/42C04B14/024C04B2103/408C04B18/26C04B24/16C04B24/28Y02E60/50
Inventor 杨云
Owner 杨云
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