Suppose I want to electrodeposit Nickel Phosphide, I will have a Nickel source, Phosphide source and a supporting electrolyte. On What basis do I select one?
1. Oxidation Potential
2. Electrolyte Affinity for the substrate
Ammonium chloride was an important electrolyte for the electrodeposition of metal films. since the concentration of this electrolyte must be higher.
Dear Darren Sebastian Christi thank you for your interesting technical question. For a general overview on the electrodeposition of nickel phosphide please have a look at the following review article entitled
Nickel Phosphide Electrocatalysts for Hydrogen Evolution Reaction
This review article is Open Access and can be freely downloaded from the general internet. Please find attached a pdf file of this paper.
Dear Darren
Generally, for an electrodeposition experiment, you should choose some chemicals. I give you an example for nickel sulfate or chloride electrolytes. You should choose at least 3 chemicals in this case:
- nickel salt
- sodium sulfate: It is wroth to note that sodium sulfate is essential for increasing the conductivity of the electrolyte.
- Boric acid; It acts as a buffer agent in nickel's electrolytes and also has some desired morphological impacts on the deposits.
In your case, I think you should use at least 4 chemical including nickel salt, phosphide salt, sodium sulfate, and boric acid.
For more detail, check out the following book:
"Extractive metallurgy of nickel, cobalt and PGMs".
Best of luck
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