I am trying to analyze the electrochemical properties of a new synthesized composite from CNTs by using cyclic voltammetry. I've tried to cast the material on a stainless steel plate using a gun spray. However, I couldn't achieve a desired even coating layer. This could be because of either the composite didn't dispersed evenly during sample preparation or the composite was too hydrophobic to bind to the surface. Therefore, I am thinking adding a binder (Nafion is a conductible binder that I have in my lab) in my sample matrix before using the gun spray to cast my material on the plate. Has anyone done something similar, and have developed a good recipe for the matrix with good binding and dispersive properties on stainless steep surfaces ? If so, please let me know!
Thank you so much!
Dear Thien Tran,
First make the SS surface little smooth by the use of soft emery paper, clean it properly with water followed by acetone and dry it. Make a slurry like ink by taking your composite material, some binder and mix it thoroughly by using mortar & pestle, use one fine brush to coat your material on the SS surface and dry at normal temperature, you will see the coating has done effectively. For more information, you can follow some literatures, and two I am referring for your understanding.
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Spin coating was developed to provide a reproducible way for depositing uniform thin films of materials onto a surface. If you use a semivolatile carrier it may be possible to make a thin coating by spin coating then evaporating off the carrier.