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Preparation method of composite soda blocking collector plate

A current collecting plate and alkali blocking technology, which is applied to fuel cell parts, fuel cells, electrical components, etc., can solve the problems of poor repeatability, short running time, and poor alkali blocking effect, so as to reduce the loss and improve the The effect of operating life and easy installation

Inactive Publication Date: 2012-07-04
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

P. Heidebrecht et al. (P. Heidebrecht, et al, Ind. Eng. Chem. Res., 2005, 44: 3527-3528) adopted a cross-flow MCFC model to balance the absorption of reforming reactions by optimizing the spatial distribution density of reforming catalysts. Thermal and electrochemical exothermic effects, to achieve the purpose of affecting and controlling the volatilization and diffusion speed of alkali gas, and inhibit alkalosis to a certain extent, but this method of optimizing system operating conditions has poor alkali resistance effect, short running time, and repeatable poor sex

Method used

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  • Preparation method of composite soda blocking collector plate
  • Preparation method of composite soda blocking collector plate
  • Preparation method of composite soda blocking collector plate

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Example 1: Preparation of alkali-resistance composite collector plate

[0031] Treatment of the porous stainless steel plate: use 304 porous stainless steel as the substrate, prepare a collector plate with a diameter of 40 mm, a pore diameter of 0.3 mm, and a thickness of 0.5 mm, tie the edge of the porous stainless steel plate with a polytetrafluoroethylene tape, and use HNO3 solution (1mol / L), NaOH solution (1mol / L), deionized water and absolute ethanol were cleaned in an ultrasonic cleaner, and then stored in absolute ethanol.

[0032] Suspension preparation: Add sintered colloidal ceramic powder (AREMCO) into deionized water to prepare 30ml of suspension with a concentration of 0.35-0.52g / mL, shake evenly with an oscillator and add 0.5wt%-1wt% of silane coupling Agent (AP-TMS) and alkaline catalyst (KF), fully shaken by ultrasonic cleaning agent, mixed evenly, and then pulled at room temperature.

[0033] Pulling film formation: After the treated stainless steel ca...

Embodiment 2

[0035] Embodiment 2: test of reforming reaction containing alkali outside the pool

[0036] The purpose of this application test is to detect the ability of the alkali-resistant composite collector plate to block liquid molten carbonate. By simulating the battery structure and environment, the test is carried out in a special stainless steel tubular reactor. First, weigh 4 grams of porous alumina pellets and place them in the lower chamber of the reaction tube, and then place the current collector plate (with a pore diameter of 2 mm) used in the traditional fuel cell, the blank porous stainless steel current collector plate (with a pore diameter of 0.35 mm) and the resistor Alkali composite current collectors are respectively placed in the reaction tube, the single-layer electrolyte diaphragm (lithium metaaluminate film) used in the battery is cut to the same size as the current collector, and then the mixed alkali of 62mol% Li2CO3 and 38mol% K2CO3 2 grams of powder was placed...

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Abstract

The invention belongs to the field of new energy and inorganic film application, and relates to a preparation method of a composite soda blocking collector plate which is used in a molten carbonate fuel cell. By utilizing capillarity which is produced by small holes on a collector plate, a ceramic material with the polarity being opposite to that of molten carbonate is prepared on the wall of thesmall hole, the difference of the polarity is utilized to produce capillary force to the liquid molten carbonate so as to prevent the liquid molten carbonate from penetrating the small holes because of the effect of the gravity force and to blocking the liquid molten carbonate through the porous collector plate. The loss of the electrolyte in the electrode is greatly reduced, and the running service life of the cell is improved. The multifunction composite collector plate is free from changing the structure of the cell, is free from influencing the power generation efficiency of the cell, andcan be simply and conveniently installed inside the cell.

Description

technical field [0001] The invention belongs to the field of new energy and inorganic membrane applications, and relates to a method for preparing a composite alkali-resistance collector plate used in a molten carbonate fuel cell, in particular to a method for protecting direct internal reforming of a molten carbonate fuel cell Preparation of base-resisting composite collector plates for catalysts. Background technique [0002] With the development of economy and society, the oil crisis and environmental pollution have brought great challenges to the survival of human beings. Seeking clean resources and realizing sustainable development has become one of the most concerned and urgent problems in the world. Hydrogen energy is regarded as the future energy of mankind, and fuel cells are the best way to utilize hydrogen energy. Hydrogen energy and fuel cells are one of the hottest topics in current technology. [0003] Direct internal reforming molten carbonate fuel cell (MCFC...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/0236
CPCY02E60/50
Inventor 张雄福张健涂敏刘海鸥邱介山
Owner DALIAN UNIV OF TECH
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