Direct hydrocarbon fuel solid oxide fuel cell anti-carbon deposition anode and a preparation method thereof

A solid oxide, fuel cell technology, applied in solid electrolyte fuel cells, fuel cells, battery electrodes, etc., can solve the problems of bloated solid oxide fuel cell systems, blockage of anode pores, and anode structure damage, and achieve structural stability. , avoid peeling, good stability

Inactive Publication Date: 2009-08-26
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when Ni directly catalyzes hydrocarbon fuels, carbon deposits will be generated, which will block the pores of the anode and cause damage to the anode structure; in order to use hydrocarbon fuels, the fuel must be reformed in advance, which requires additional equipment, resulting in bulky and costly SOFC systems

Method used

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  • Direct hydrocarbon fuel solid oxide fuel cell anti-carbon deposition anode and a preparation method thereof
  • Direct hydrocarbon fuel solid oxide fuel cell anti-carbon deposition anode and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Direct use of hydrocarbon fuel cells Lanthanum-doped strontium titanate-cerium oxide anode resists carbon deposition anode material with composition xSr 0.55 La 0.3 TiO 3 -(1-x)CeO 2 (x=0.5).

[0026] Firstly, the lanthanum-doped strontium titanate material was prepared, and the La 2 o 3 , SrCO 3 、TiO 2 Weigh according to the stoichiometric ratio, add it to a ball mill tank, use alcohol as the ball mill medium, and ball mill it on a planetary ball mill at 400 rpm under controllable conditions for 3 hours to mix evenly, and then blow the mixed slurry at 70°C Dry in a type drying oven; put the dried powder into an alumina crucible and send it to a muffle furnace for calcination at 1250°C for 3 hours to obtain a doped strontium titanate material.

[0027] The prepared Sr 0.55 La 0.3 TiO 3 Powder and CeO 2 The powder is put into the ball mill tank according to the weight ratio of 1:1, and the alcohol is used as the ball milling medium, and the ball milling is car...

Embodiment 2

[0031] Direct use of hydrocarbon fuel cells yttrium-doped strontium titanate-cerium oxide anode resists carbon deposition anode material with composition xSr 0.88 Y 0.08 TiO 3 -(1-x)CeO 2 (x=0.5).

[0032] The preparation method is similar to Example 1, with Y 2 o 3 , SrCO 3 、TiO 2 As a raw material, after mixing and drying, it was calcined at 1150°C for 3 hours to obtain Sr 0.88 Y 0.08 SrTiO 3 Material. The prepared Sr 0.88 Y 0.08 TiO 3 Powder and CeO 2 The powder is mixed and dried according to 1:1, and the doped strontium titanate-cerium oxide composite anode material is prepared.

[0033] Will Sr 0.88 Y 0.08 TiO 3 -CeO 2The anode powder is mixed evenly in agate grinding with 1:1 weight ratio, 10% starch and screen printing solvent, and the prepared anode slurry is screen-printed on the YSZ electrolyte sheet, and sintered at 1350 ° C for 3 hours, and the cathode is prepared Method is with embodiment 1. The prepared single cell was assembled, and the perf...

Embodiment 3

[0035] Direct use of hydrocarbon fuel cells yttrium-doped strontium titanate-cerium oxide anode resists carbon deposition anode material with composition xSr 0.88 Y 0.08 TiO 3 -(1-x)CeO 2 (x=0.6).

[0036] The preparation method of doping strontium titanate is the same as that described in Example 2, the Sr 0.88 Y 0.08 TiO 3 -CeO 2 The anode powder was prepared with a weight ratio of 3:2 and 10% starch, and the screen printing solvent was mixed evenly in agate grinding, and the prepared anode slurry was screen printed on the YSZ electrolyte sheet, and sintered at 1350 ° C for 3 hours. The preparation method is the same as in Example 1. The prepared single cell was assembled, and the performance test of the single cell was performed with hydrogen / oxygen or methane / oxygen as fuel (see Table 1). The porosity of the anode was 55%, and its thickness was 120 μm.

[0037] Table 1. Battery performance comparison of three doped strontium titanate-cerium oxide composite anode ma...

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Abstract

The invention relates to an anti-carbon deposition solid oxide fuel cell anode material and a preparation method thereof. The composition of the anode material is xSr (1-1.5y) My TiO3-(1-x) CeO2. In the formula, x is equal to 0.3-0.7, and y is equal to 0.04-0.4; M is La, Y or Sm. The adulteration amount of La, Sr and Y is respectively 0.2-0.4mol%, 0.1-0.3mol% and 0.02-0.08mol%. Compared with the traditional nickel- yttrium oxide stabilized zirconia anode taking hydrogen as fuel, the anode material can take hydrocarbon having low price and rich reserve volume as fuel, so as to reduce the cost of a solid oxide fuel cell and be beneficial to accelerating the commercial development of the solid oxide fuel cell.

Description

technical field [0001] The invention relates to an anti-carbon deposition anode material and a preparation method for solid oxide fuel cells directly using hydrocarbons as fuel, and belongs to the field of material preparation in solid oxide fuel cells. Background technique [0002] The solid oxide fuel cell is an electrochemical energy conversion device that directly converts the chemical energy in the fuel into electrical energy, and has the advantages of cleanliness and high efficiency. Due to the high operating temperature, the fuel is suitable for a wide range of applications. [0003] Traditional solid oxide fuel cells use Ni / YSZ as the anode material, which has good electrochemical catalytic performance for hydrogen. Since hydrogen is expensive and dangerous, it is difficult to transport and supply it on a large scale. Hydrocarbons represented by methane have abundant reserves, low prices, and are renewable. Therefore, it is necessary to directly use hydrocarbons ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/10H01M8/1231
CPCY02E60/522Y02E60/50
Inventor 孙秀府王绍荣王振荣钱继勤温廷琏
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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