High-catalytic-activity anti-carbon-deposition anode material and preparation method thereof

A technology of high catalytic activity and anode material, applied in the field of new anode materials for solid oxide fuel cells and their preparation, can solve the problems of high anode polarization resistance, low battery output power, and high process requirements, and achieve excellent electrochemical performance. , Accelerate the oxidation rate, obvious effect of anti-carbon deposition

Active Publication Date: 2014-09-10
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, the impregnation method generally needs to repeat the impregnation preparation process for 7-10 times, the process requirements are high, the cycle is long, and it is difficult to meet the commercialization needs of SOFC; 3) Use Cu and other metals with low catalytic activity for hydrocarbon fuels to replace Ni
However, the melting p

Method used

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  • High-catalytic-activity anti-carbon-deposition anode material and preparation method thereof
  • High-catalytic-activity anti-carbon-deposition anode material and preparation method thereof
  • High-catalytic-activity anti-carbon-deposition anode material and preparation method thereof

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Embodiment 1

[0046] The present invention has high catalytic activity solid oxide fuel cell anode material Co 2 TiO 4 Preparation and performance test of its corresponding single cell:

[0047] The chemically pure n-butyl titanate (C 16 h 36 o 4 Ti), analytically pure cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) is raw material, dissolves in water by stoichiometric ratio 1:2, adds ethylenediaminetetraacetic acid (EDTA) and citric acid as complexing agent;

[0048] Slowly adjust the solution to a pH value of 7-8 with ammonia water, and stir at an even speed to form a purple clear solution;

[0049] Put the solution in a crucible, heat and concentrate until the solution evaporates to dryness and starts to burn into powder;

[0050] The obtained powder is pre-fired in a muffle furnace at 900°C for 2 hours to remove organic matter, and obtain Co 2 TiO 4 Powder;

[0051] The pre-fired powder is evenly mixed with 20% corn starch and 20% electrolyte powder. As an anode powder, the ...

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Abstract

The invention relates to a novel high-catalytic-activity anode material of a solid oxide fuel cell (SOFC) and a preparation method of the anode material. The anode material is characterized in that the chemical formula is Co2TiO4, and the anode material can be decomposed to be a Co phase and a TiO2 phase which have specific microstructures, wherein the Co phase is used for providing an electronic transmission channel and supplying catalytic activity to the splitting decomposition and oxidation reactions of a hydrocarbon fuel; the TiO2 phase can be used for avoiding the formation of carbon deposition, simultaneously providing an ion transmission channel and increasing the oxidation rate of fuel gas. The invention simultaneously provides a preparation method of a novel anti-carbon-deposition anode material. The anode material has the advantages of high electrical conductivity, high catalytic activity to the hydrocarbon fuel, carbon deposition resistance, simple preparation process, environmental friendliness and the like.

Description

technical field [0001] The invention belongs to the fields of new energy, material processing and electric power, and in particular relates to a novel anode material of a solid oxide fuel cell (SOFC) which has high catalytic activity for hydrocarbon fuel oxidation and does not form carbon deposits and a preparation method thereof. Background technique [0002] Solid oxide fuel cell (SOFC) is a new type of power generation device, which has the advantages of high fuel energy conversion efficiency, low environmental pollution, strong fuel applicability and flexible design, and is known as the green energy of the 21st century. One of the most prominent advantages of SOFC is that it can directly use hydrocarbons (such as natural gas, methanol, propane) as fuel, which can solve the storage and transportation difficulties caused by hydrogen fuel. However, the traditional Ni-based ceramic anodes of SOFC (such as Ni-Zr 0.85 Y 0.15 o 2-δ and Ni-Ce 0.8 SM 0.2 o 2-δ etc.) have ex...

Claims

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Application Information

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IPC IPC(8): H01M4/90B01J23/75C01G23/00
CPCY02E60/50C01G23/003C01P2006/40H01M4/9025H01M4/905
Inventor 彭冉冉陆亚林汪志全王振斌杨征辉
Owner UNIV OF SCI & TECH OF CHINA
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