Low-resistivity solid oxide fuel cell electrode and preparation method thereof
A fuel cell electrode and solid oxide technology, which is applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor catalytic performance and high resistivity, achieve good dispersion, low resistivity, and prevent agglomeration
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[0027] see figure 1 , figure 1 It is a flow chart of a preferred embodiment of a method for preparing a low-resistivity solid oxide fuel cell electrode of the present invention, as shown in the figure, which includes steps:
[0028] S10, Sr(NO 3 ) 2 , Y(NO 3 ) 3 •6H 2 O, Co(NO 3 ) 3 •6H 2 O and urea are added to the mixed solvent, and mixed evenly to obtain a modified material precursor solution;
[0029] S20. Adding the modified material precursor solution dropwise to the surface of the pre-prepared electrode porous layer, and drying in an oven under vacuum conditions;
[0030] S30, carry out 200-600 times to the electrode after drying treatment oC Calcination treatment to obtain low-resistivity solid oxide fuel cell electrodes.
[0031] Specifically, in the prior art, when modifying fuel cell electrodes with modification materials, it usually needs to go through 600 o The high-temperature calcination process above C, however, high-temperature calcination will ca...
Embodiment 1
[0049] by (GDC) as the electrode electrolyte layer, (LSCF) as electrode porous layer, Sr 0.9 Y 0.1 CoO 2.5+δ (SYC) as a finishing material, at 350 o The electrochemical impedance spectrum of the modified electrode obtained after calcination at C figure 2 Shown, where the impedance is represented by Z, and the impedance is a vector that varies with frequency, such as figure 2 As shown, the horizontal axis is the real part of the impedance, represented by Zˊ, and the vertical axis is the imaginary part of the impedance, represented by -Z".
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