Composite material of nanoscale cobalt based particles and nitrogen doped carbon, synthetic method and application
A composite material, nitrogen-doped carbon technology, applied in chemical instruments and methods, electrical components, circuits, etc., can solve the problems of restricting large-scale production, poor durability, scarce output, etc., and achieve commercial large-scale production , simple operation and low cost of raw materials
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[0049] Example 1
[0050] In the present invention, a certain amount of ethylenediaminetetraacetic acid is added to the raw materials to synthesize nano-scale cobalt-based particles / nitrogen-doped carbon composites, and the oxygen reduction performance is evaluated.
[0051] Mix 30 g of melamine and 1 g of glucosamine hydrochloride in an aqueous solution to form solution A. In addition, 1 g of ethylenediaminetetraacetic acid was dissolved in the aqueous solution, and then 1 g of cobalt nitrate was added to it, and the mixture was uniformly mixed to form solution B. Mix solution A and solution B uniformly, heat and stir until dry. The obtained solid mixture was calcined at 800° C. for 2 h in a nitrogen atmosphere to finally obtain a composite of nano-scale cobalt-based particles and nitrogen-doped carbon. The mass content of cobalt-based particles in the composite reaches 58%, the content of pyridine nitrogen in the product is 57% (the percentage of pyridine nitrogen in total...
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[0053] Example 2
[0054] In the present invention, a certain amount of ethylenediaminetetraacetic acid is added to the raw materials to synthesize nano-scale cobalt-based particles / nitrogen-doped carbon composites, and the oxygen reduction performance is evaluated.
[0055] Mix 40 g of melamine and 1 g of glucosamine hydrochloride in an aqueous solution to form solution A. In addition, 4 g of ethylenediaminetetraacetic acid was dissolved in the aqueous solution, and 2 g of cobalt acetate was added into it, and mixed uniformly to form solution B. Mix solution A and solution B uniformly, heat and stir until dry. The obtained solid mixture was calcined at 700° C. for 3 h in an argon atmosphere to finally obtain a composite of nano-scale cobalt-based particles and nitrogen-doped carbon. The mass content of cobalt-based particles in the composite reaches 47%, the mass content of pyridine nitrogen in the product is 55% (the percentage of pyridine nitrogen in total nitrogen), and ...
Example Embodiment
[0057] Example 3
[0058] In the present invention, a certain amount of ethylenediaminetetraacetic acid is added to the raw materials to synthesize nano-scale cobalt-based particles / nitrogen-doped carbon composites, and the oxygen reduction performance is evaluated.
[0059] Mix 20 g of melamine and 1 g of glucosamine hydrochloride in an aqueous solution to form solution A. In addition, 0.25 g of ethylenediaminetetraacetic acid was dissolved in the aqueous solution, and 0.5 g of cobalt chloride was added into the solution, and the mixture was uniformly mixed to form solution B. Mix solution A and solution B uniformly, heat and stir until dry. The obtained solid mixture was calcined at 600° C. for 5 h in a helium atmosphere to finally obtain a composite of nano-scale cobalt-based particles and nitrogen-doped carbon. The mass content of cobalt-based particles in the composite reaches 51%, the mass content of pyridine nitrogen in the product is 51% (the percentage of pyridine n...
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