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

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...

AI Technical Summary

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

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