Anode-supported solid oxide fuel cell, cell stack and preparation method thereof

A solid oxide and anode support technology, applied in solid electrolyte fuel cells, fuel cells, fuel cell grouping, etc., can solve the problems of weak battery structure, difficult current collection, high preparation cost, etc., and achieve high battery strength and compact structure , the effect of reducing the preparation cost

Inactive Publication Date: 2012-08-29
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an anode-supported tubular ...

Method used

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  • Anode-supported solid oxide fuel cell, cell stack and preparation method thereof
  • Anode-supported solid oxide fuel cell, cell stack and preparation method thereof
  • Anode-supported solid oxide fuel cell, cell stack and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation of a tubular SOFC single cell includes the following steps:

[0047] 1. Preparation of double-layer ceramic connector slurry:

[0048] First, several lanthanum-doped strontium titanates (La 0.4 Sr 0.6 TiO 3 ) powder. Lanthanum strontium manganate (La 0.8 Sr 0.2 MnO 3 ) powder is a commercially available product from Fuel Cell Materials Corporation of the United States. First take 44 grams of lanthanum-doped strontium titanate powder, 100 grams of absolute ethanol, and 1.5 grams of triethanolamine, add 200 grams of zirconia grinding balls, mill on a planetary ball mill for 1 hour, and then add PVB (polyvinyl acetal) 1 gram, continue ball milling for 2 hours, and then vacuum treatment for 2 to 3 minutes to remove the air in the slurry to obtain the lanthanum-doped strontium titanate coating slurry.

[0049] Lanthanum strontium manganate (La 0.8 Sr 0.2 MnO 3 ) powder 20 grams, butanone 20 grams, ethanol 10 grams, triethanolamine 0.6 grams, add 60...

Embodiment 2

[0055] with H 2 Performance test of tubular SOFC single cell for fuel

[0056] According to the tubular single cell prepared in Example 1, the experimental conditions for its power generation performance test are: cathode area: 9cm 2 ;Test gas: H 2 , O 2 , not sealed. h 2 The flow rate is 100ml / min, O 2 The flow rate is 80ml / min.

[0057] The test method is the four-terminal method. Use the constant current source in series with the battery, and draw the current-voltage curve (I-V curve) by changing the current test voltage. Then multiply a certain current value by the corresponding voltage value to obtain the power under the current (the power can be divided by the cathode area to obtain the power density). In this way, a current-power density curve (I-P curve) can be obtained. Such as image 3 shown. image 3Indicates the I-V and I-P curves of the battery at different temperatures (900°C, 850°C, 800°C and 750°C). Among them, the open circuit is slightly lower tha...

Embodiment 3

[0059] Performance test of tubular SOFC single cell fueled by ethanol

[0060] A big advantage of SOFC over other types of fuel cells is that it has strong fuel adaptability and can directly use hydrocarbons as fuel. This is because the operating temperature of SOFC is high, and hydrocarbon fuel can be directly oxidized at the anode, or a reforming reaction occurs inside the battery. The possible reforming reactions of alcohol and water vapor are as follows:

[0061] C 2 h 5 OH+H 2 O→2CO+4H 2

[0062] C 2 h 5 OH+3H 2 O→2CO 2 +6H 2

[0063] CO+H 2 O→CO 2 +H 2

[0064] The preparation method of the tubular SOFC single cell is the same as in Example 1. During the performance test, the inner ventilation pipe is made of nickel-plated stainless steel pipe, and the alcohol / H 2 O mixed liquid (volume ratio 2:1) is vaporized and internally reformed to generate electricity. Alcohol / H 2 The O solution was heated in a constant temperature water bath at 70°C, and N 2 It ...

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Abstract

The invention relates to an anode-supported solid oxide fuel cell, a cell stack and a preparation method thereof, which belong to the field of fuel cell materials. The anode-supported tubular solid oxide fuel cell comprises an anode support tube with one end sealed, wherein a bar-shaped ceramic connector layer is arranged on the outer side surface of the anode support tube; a compact electrolyte layer is arranged at the part of the outer surface of the anode support tube without the ceramic connector layer, and the compact electrolyte layer and the bar-shaped ceramic connector layer are adjacent to each other and completely cover the outer surface of the anode outer surface; the anode support tube, the compact electrolyte layer and the ceramic connector layer are integrated through cofiring; and a cathode layer is further arranged outside the compact electrolyte layer and disconnected with the ceramic connector layer. The anode-supported solid oxide fuel cell is easy for stacking and has high operating temperature and generating efficiency; a connector is stable and reliable and has a long service life; as the connector and the anode support tube biscuit are prepared through cofiring, convenience and low cost are realized; and meanwhile, the cell structure with one end sealed achieves internal reforming of fuel, compact structure and high power density are also realized.

Description

technical field [0001] The invention relates to an anode-supported solid oxide fuel cell and a preparation method thereof, which is suitable for tubular SOFC cell stacks and belongs to the field of fuel cell materials. Background technique [0002] As a new power generation technology, fuel cells have many advantages such as high efficiency, cleanliness, safety and reliability. In addition to the common advantages of fuel cells such as high efficiency and environmental friendliness, solid oxide fuel cells (SOFC) make their design more flexible, more convenient to operate, and safer and more reliable due to their all-solid-state characteristics. Tubular SOFC has the advantages of no need for high-temperature sealing and strong thermal shock resistance, and has received extensive attention. Since the operating voltage of SOFC single cells is only about 1V, in practical applications, it is necessary to use connectors to assemble single cells into cell stacks to increase their ...

Claims

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Application Information

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IPC IPC(8): H01M8/10H01M8/02H01M8/24H01M8/0215H01M8/1007H01M8/241H01M8/2457
CPCY02E60/50
Inventor 王绍荣徐延杰钱继勤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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