how does coating of platinum black help in SHE electrode?

Asked by Jishnu S.Nambiar | 13th Jul, 2013, 04:49: PM

Expert Answer:

The platinum black provides a very high surface area that promotes the speed of reaction at the electrode and thereby virtually eliminates overpotential at the standard hydrogen electrode. An overpotential would lead to misleading values of potential of other electrodes compared with a standard hydrogen electrode that manifested overpotential.

Answered by  | 14th Jul, 2013, 06:32: AM

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