Low-temperature solid oxide fuel cell cathode in core-shell nano fiber structure and electrostatic spinning preparation method thereof
A fuel cell cathode, solid oxide technology, applied in battery electrodes, nanotechnology, nanotechnology, etc., can solve problems such as unfavorable cathode mass production and large-scale application, surface adsorption poisoning and high thermal expansion coefficient, unfavorable cathode oxygen surface exchange process. and other problems, to achieve the effect of promoting oxygen surface exchange and bulk diffusion rate, improving structure and performance stability, and improving the ability to resist CO2 surface adsorption and poisoning
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[0024] Further description will be made below through specific examples.
[0025] Preparation of perovskite oxide PrBa by electrospinning 0.92 co 2 o 6-δ (δ is the amount of oxygen deficiency) and electrolyte Gd 0.1 Ce 0.9 o 1.95 Low-temperature SOFC cathode material with core-shell nanofiber structure
[0026] Step 1, prepare PrBa respectively 0.92 co 2 o 6-δ Spinning precursor solution and Gd 0.1 Ce 0.9 o 1.95 Spinning Precursor Solution
[0027] PrBa 0.92 co 2 o 6-δ Spinning precursor solution preparation process:
[0028] According to the synthesis of 0.4mmol PrBa 0.92 co 2 o 6-δ The metal ion stoichiometric ratio accurately weighs Pr(NO 3 ) 3? 6H 2 O 0.174g, Ba(NO 3 ) 2 0.0961g, Co(Ac) 2? 4H 2 O 0.199g, put into a mixed solvent composed of 0.2ml deionized water, 0.5ml alcohol and 6ml N,N-dimethylformamide, magnetically stir at room temperature until the above reagents are completely dissolved and mixed uniformly; then 1.0 gram of polyvinylpyrro...
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