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Anode material for solid oxide fuel cell and preparation method of anode material

A technology of solid oxide and anode materials, which is applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of short service life of composite anode batteries, and achieve excellent oxidation resistance durability and thermal expansion stability.

Inactive Publication Date: 2016-05-18
沈雪松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the service life of the traditional composite anode battery is not long, the present invention provides a solid oxide fuel cell anode material with good durability

Method used

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  • Anode material for solid oxide fuel cell and preparation method of anode material
  • Anode material for solid oxide fuel cell and preparation method of anode material
  • Anode material for solid oxide fuel cell and preparation method of anode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Synthesis of oxide powders by co-precipitation method [(LnO α ) x (Ce y Zr 1-y o 2 ) 1-x ] 1-z [MO β ] z , where, when x=0, y=0.5, z=0, the oxide powder is Ce 0.5 Zr 0.5 o 2 ; When x=0, y=0.9, z=0, the oxide powder is Ce 0.9 Zr 0.1 o 2 ; When x=0, y=0.1, z=0, the oxide powder is Ce 0.1 Zr 0.9 o 2 .

[0056] (1) ZrCl 2 O·8H 2 O, Ce(NO 3 ) 3 ·6H 2 O is dissolved in distilled water according to the mole percentage of Zr and Ce elements.

[0057] (2) Slowly drip ammonia water into the solution and continue to stir until all the precipitates are completely precipitated and then continue to stir for 2h.

[0058] (3) The precipitate was filtered out, dried at 120°C for 24h, and then sintered at 1300°C for 10h.

[0059] (4) After sintering, ball mill for 5 hours in an ethanol medium with a rotating speed of 600 rpm and a mass ratio of ball to material of 35 / 1 until the average particle size of the particles is 1.2 μm.

[0060] Adopt the following method ...

Embodiment 2

[0065] Synthesis of oxide powders by co-precipitation method [(LnO α ) x (Ce y Zr 1-y o 2 ) 1-x ] 1-z [MO β ] z , wherein, when x=0.05, y=0.5, z=0, Ln=Y (yttrium), the oxide powder is (Y 2 o 3 ) 0.05 (Ce 0.5 Zr 0.5 o 2 ) 0.95 ; When x=0.01, y=0.5, z=0, Ln=Y (yttrium), the oxide powder is (Y 2 o 3 ) 0.01 (Ce 0.5 Zr 0.5 o 2 ) 0.99 ; When x=0.2, y=0.5, z=0, Ln=Y (yttrium), the oxide powder is (Y 2 o 3 ) 0.2 (Ce 0.5 Zr 0.5 o 2 ) 0.8 .

[0066] (1) ZrCl 2 O·8H 2 O, Ce(NO 3 ) 3 ·6H 2 O, Y (NO 3 ) 3 ·6H 2 O is dissolved in distilled water according to the mole percentage of Zr, Ce and Y elements.

[0067] (2) Slowly drip ammonia water into the solution and continue to stir until all the precipitates are completely precipitated and then continue to stir for 2h.

[0068] (3) The precipitate was filtered out, dried at 120°C for 24h, and then sintered at 1300°C for 10h.

[0069] (4) After sintering, ball mill for 5 hours in an ethanol medium with a r...

Embodiment 3

[0075] Synthesis of oxide powders by co-precipitation method [(LnO α ) x (Ce yZr 1-y o 2 ) 1-x ] 1-z [MO β ] z , wherein, when x=0.05, y=0.5, z=0.05, Ln=Y (yttrium), M=Ni (nickel), the oxide powder is (Y 2 o 3 ) 0.0475 (Ce 0.5 Zr 0.5 o 2 ) 0.9025 (NiO) 0.05 ; When x=0.05, y=0.5, z=0.1, Ln=Y (yttrium), M=Ni (nickel), the oxide powder is (Y 2 o 3 ) 0.045 (Ce 0.5 Zr 0.5 o 2 ) 0.855 (NiO) 0.1 ; When x=0.05, y=0.5, z=0.2, Ln=Y (yttrium), M=Ni (nickel), the oxide powder is (Y 2 o 3 ) 0.04 (Ce 0.5 Zr 0.5 o 2 ) 0.76 (NiO) 0.2 .

[0076] (1) ZrCl 2 O·8H 2 O, Ce(NO 3 ) 3 ·6H 2 O, Y (NO 3 ) 3 ·6H 2 O, Ni(NO 3 ) 2 ·6H 2 O is dissolved in distilled water according to the mole percentage of Zr, Ce, Y and Ni elements.

[0077] (2) Slowly drip ammonia water into the solution and continue to stir until all the precipitates are completely precipitated and then continue to stir for 2h.

[0078] (3) The precipitate was filtered out, dried at 120°C for 24...

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Abstract

The invention discloses an anode material for a solid oxide fuel cell and a preparation method of the anode material. The anode material is oxide powder [(LnOalpha)x(CeyZr1-yO2)1-x]1-z[MObeta]z, wherein x is larger than or equal to 0 and smaller than or equal to 0.3, y is larger than or equal to 0.02 and smaller than or equal to 0.95, z is larger than or equal to 0 and smaller than or equal to 0.3, LnOalpha is corresponding oxide of Ca, Mg, Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and MObeta is corresponding oxide of Mn, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and Au. The method comprises the following steps that 1, nitrate of elements with a corresponding amount is evenly dissolved in distilled water; 2, ammonium hydroxide is slowly and dropwise added into the solution, and sediment is separated out; 3, the sediment is filtered out, and sintering is carried out after drying; 4, the sintered powder is subjected to wet ball milling. Compared with a traditional composite anode material, the anode material has better heat expanding stability and more excellent oxidation resisting durability, and the long-term running cost of the fuel cell can be reduced.

Description

technical field [0001] The invention relates to an anode material, in particular to an anode material for a solid oxide fuel cell. Background technique [0002] A solid oxide fuel cell is an all-solid-state energy conversion device that can convert the chemical energy in fuel into electrical energy through electrochemical reactions. It is mainly composed of anode, cathode and electrolyte. Usually, the air (oxygen) introduced into the cathode undergoes an oxygen reduction reaction at the three-phase interface inside the cathode, and the oxygen ions generated by the reaction are conducted to the three-phase interface inside the anode through a solid electrolyte to undergo a hydrogen oxidation reaction with hydrogen, and the reaction generates The electrons flow into the cathode through the external current loop to form a closed circuit to generate power and do work. [0003] The anode material of solid oxide fuel cells is mainly composed of electronically conductive material...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M4/90
CPCH01M4/8652H01M4/88H01M4/881H01M4/8835H01M4/9033H01M2008/1293Y02E60/50
Inventor 沈雪松
Owner 沈雪松