A battery anode reforming layer material, preparation method and power generation method for a solid oxide fuel cell

A technology of solid oxide and fuel cell, which is applied in the field of battery anode reforming layer material, preparation, and power generation of solid oxide fuel cell. Problems such as sintering and growth, to achieve the effect of enriching the reaction interface, high electrochemical catalytic activity, and strong redox activity

Active Publication Date: 2021-03-30
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the impact of mining activities, a large amount of air is mixed in coal mine gas, resulting in low methane content, which increases the difficulty of gas utilization
At present, the utilization rate of coal mine gas extraction in my country is less than 40%, and more than 10 billion cubic meters of gas extraction are directly emptied every year, resulting in serious energy waste and atmospheric greenhouse effect
Although this method solves the problem of low-concentration gas utilization, the traditional nickel-based anode it uses may have problems such as carbon deposition and nickel particle sintering and growth when it catalyzes oxygen-containing coal mine gas under certain working conditions, and it is harmful to low-concentration gas. The catalytic reforming efficiency of concentrated gas is also low, so it is urgent to develop new technical methods to solve the above problems, so as to improve the electrochemical performance and stability of coal mine gas fuel cells

Method used

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  • A battery anode reforming layer material, preparation method and power generation method for a solid oxide fuel cell
  • A battery anode reforming layer material, preparation method and power generation method for a solid oxide fuel cell
  • A battery anode reforming layer material, preparation method and power generation method for a solid oxide fuel cell

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Embodiment 1

[0032] A battery anode reforming layer material, chemical formula is Ni 2 Mo 0.05 Ti 1.925 o 6-2δ , where x is Mo 6+ doped Ti 4+ bit molar ratio. The preparation method of the anode reforming layer material of the battery comprises the following steps: adding nickel nitrate, ammonium molybdate, and n-butyl titanate to water in sequence at a molar ratio of 1:0.025:0.9625, and then adding complexing agent ethylenediamine Tetraacetic acid and citric acid, the molar ratio between metal ions, citric acid and ethylenediaminetetraacetic acid in the solution is 1:1:0.8, stir until the complexing agent dissolves, then add ammonia water to adjust the pH value of the solution to 6-7; Pour the solution into a crucible and heat it. After the solution is concentrated and evaporated to dryness, spontaneous combustion occurs. The powder obtained after combustion is calcined in an air atmosphere at 600-1000°C for 3-5 hours to obtain Ni 2 Mo 0.05 Ti 1.925 o 6-2δ Reforming layer of powd...

Embodiment 2

[0047] A battery anode reforming layer material, chemical formula is Ni 2 Mo 0.1 Ti 1.85 o 6-2δ , where x is Mo 6+ doped Ti 4+ bit molar ratio. The preparation method of the anode reforming layer material of the battery comprises the following steps: adding nickel nitrate, ammonium molybdate, and n-butyl titanate to water in a molar ratio of 1:0.05:0.925 in sequence, and then adding the complexing agent ethylenediamine Tetraacetic acid and citric acid, the molar ratio between metal ions, citric acid and ethylenediaminetetraacetic acid in the solution is 1:1:0.8, stir until the complexing agent dissolves, then add ammonia water to adjust the pH value of the solution to 6-7; Pour the solution into a crucible and heat it. After the solution is concentrated and evaporated to dryness, spontaneous combustion occurs. The powder obtained after combustion is calcined in an air atmosphere at 600-1000°C for 3-5 hours to obtain Ni 2 Mo 0.1 Ti 1.85 o 6-2δ Reforming layer of powder...

Embodiment 3

[0051] A battery anode reforming layer material, chemical formula is Ni 2 Mo 0.002 Ti 1.997 o 6-2δ , where x is Mo 6+ doped Ti 4+ bit molar ratio. The preparation method of the anode reforming layer material of the battery comprises the following steps: adding nickel nitrate, ammonium molybdate, and n-butyl titanate to water in a molar ratio of 1:0.001:0.9985 in sequence, and then adding complexing agent ethylenediamine Tetraacetic acid and citric acid, the molar ratio between metal ions, citric acid and ethylenediaminetetraacetic acid in the solution is 1:1:0.8, stir until the complexing agent dissolves, then add ammonia water to adjust the pH value of the solution to 6-7; Pour the solution into a crucible and heat it. After the solution is concentrated and evaporated to dryness, spontaneous combustion occurs. The powder obtained after combustion is calcined in an air atmosphere at 600-1000°C for 3-5 hours to obtain Ni 2 Mo 0.1 Ti 1.85 o 6-2δ Reforming layer of powde...

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Abstract

The invention discloses a cell anode reforming layer material, a preparation method and a power generation method for a solid oxide fuel cell. The chemical formula of the cell anode reforming layer material is Ni2Mo<2x>Ti<2-3x>O<6-2delta>, in the formula, x is the molar ratio of Mo<6+> doped Ti<4+>, and x is greater than or equal to 0.001 and less than or equal to 0.05. The preparation method comprises the following steps: sequentially adding a Ni<2+>-containing compound, a Mo<6+>-containing compound and a Ti<4+>-containing compound into water, adding a complexing agent, carrying out stirring,adjusting the pH value of the solution to 6-7, carrying out heating, concentrating and combusting to obtain powder, and calcining the powder in an air atmosphere. The power generation method of the material comprises the following steps: adding terpilenol-ethyl cellulose into a reforming layer powder material to prepare slurry, coating the surface of a cell anode with the slurry, sintering the slurry in air, and reducing the slurry in a hydrogen atmosphere; and respectively introducing low-concentration gas and external air into the anode gas passage and the cathode gas passage of the cell. According to the invention, anode carbon deposition can be avoided, and the power generation power and stability of the solid oxide fuel cell are improved.

Description

technical field [0001] The invention relates to the technical field of gas utilization and fuel cells, in particular to a battery anode reforming layer material, a preparation method and a power generation method for a solid oxide fuel cell. Background technique [0002] Coal mine gas is a kind of clean energy with abundant reserves. my country's coal mine gas resources have reached 31 trillion cubic meters. However, due to the impact of mining activities, a large amount of air is mixed in coal mine gas, resulting in low methane content, which increases the difficulty of gas utilization. At present, the utilization rate of coal mine gas extraction in my country is less than 40%, and more than 10 billion cubic meters of gas extraction are directly emptied every year, resulting in serious energy waste and atmospheric greenhouse effect. The existing gas power generation technologies are mainly combustion power generation technologies such as internal combustion engines and gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M8/0612H01M8/1246
CPCH01M4/9025H01M4/9091H01M8/0618H01M8/1246H01M2008/1293Y02E60/50
Inventor 凌意瀚王鑫鑫杨洋吴雨杰周世杰
Owner CHINA UNIV OF MINING & TECH
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