Hi,
As I know, metal oxide materials(Al2O3, WO3 ....) have very low reactivity.
Also they have high melting point.
If we calcine those metal oxide with cathode material(NCM) under 500℃, it will not be happen chemical reaction between NCM and metal oxide dopant.
Is it right?
If it is true, how can NCM be coated by metal oxide dopants? Just physical coating by surface energy?
In that case, is high surface energy of NCM advantages for better surface coating?
If not, please explain well-known mechanism with reference :)
I hope your happy day!
Thank you!
Have you tried coating the electrode surface with a liquid suspension containing your metal oxide material and then hitting it very locally with plasma after the solvent/carrier has evaporated completely?
Robb Engle
I have never tried it. I just want to do coating via solid reaction.
But I cannot understand the real mechanism of solid phase coating process, especially metal oxide.
Metal oxide dopants can still react and form a solid solution with cathode materials like NCM through a high-temperature calcination process despite their low reactivity and high melting points. Physical coating by surface energy is an alternative approach but may not be as effective as a solid-state reaction. The high surface energy of NCM can facilitate the adsorption of the metal oxide dopant nanoparticles onto its surface.
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