PdZn alloy nano-catalyst applied to ethanol fuel cell
An alloy nano-catalyst technology, applied in the field of electrocatalysis, can solve the problems of no oxygen reduction activity, no cathode oxygen reduction activity, etc., and achieve excellent ethanol oxidation performance, excellent oxygen reduction catalytic performance, and strong controllability. Effect
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Embodiment 1
[0039] Prepare dendritic PdZn nanomaterials, the specific steps are as follows:
[0040] (1) Get 20.0 mg of palladium acetylacetonate and 136 μL (100 mg / mL) of zinc chloride solution as precursors, and add 43.6 mg of ammonium bromide into a glass reagent bottle containing 5 mL of oily ammonia solvent, stir to form a uniform The solution;
[0041] (2) The homogeneous solution that will obtain is joined in the reaction kettle, meanwhile, puts in the reaction kettle and is filled with 9.6mg MO (CO) 6 As the source of CO, feed 0.25MPa hydrogen, heat with an oil bath, raise the temperature to 162°C, keep it warm for 2.5h, then cool to room temperature to obtain a black gel-like suspension, add ethanol to the suspension, and then centrifuge The final dendritic PdZn nanomaterials were obtained and named as PdZn NDs.
Embodiment 2
[0043] Prepare the sheet-like PdZn nanomaterials, the specific steps are as follows:
[0044] (1) Get the zinc chloride solution of the palladium acetylacetonate of 20mg and 136 μ L (100mg / mL) as precursor, the ammonium bromide of 43.6mg, join in the glass reagent bottle that 5mL oily ammonia solvent is housed, stir to form uniform solution;
[0045] (2) The homogeneous solution that will obtain is joined in the reaction kettle, meanwhile, puts in the reaction kettle and is filled with 9.6mg MO (CO)6 As the source of CO, heat it with an oil bath, raise the temperature to 162°C, keep it warm for 2.5h, and then cool to room temperature to obtain a black gel-like suspension. Add ethanol to the suspension, and then centrifuge to obtain the final flake-shaped PdZn nano material, named PdZnNSs.
Embodiment 3
[0047] Prepare granular PdZn nanomaterials, the specific steps are as follows:
[0048] (1) Get 20.0 mg of palladium acetylacetonate and 136 μL (100 mg / mL) of zinc chloride solution as precursors, and add 43.6 mg of ammonium bromide into a glass reagent bottle containing 5 mL of oily ammonia solvent, stir to form a uniform The solution;
[0049] (2) The obtained homogeneous solution was added to the reaction kettle, and nitrogen gas of 0.25 MPa was introduced, heated with an oil bath, heated to 162° C., kept for 2.5 hours, and then cooled to room temperature to obtain a black gel-like suspension. Ethanol was added to the suspension, followed by centrifugation to obtain the final granular PdZn nanomaterials, named as PdZn NPs.
[0050] Morphological characterization and performance testing
[0051] The nanometer material prepared in embodiment 1-3 is photographed transmission electron microscope, figure 1 Figures a, b and c in the figure are the transmission electron microsc...
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