Electrochemical Behavior of Tin Based Film Cathodically Deposited from Non-Aqueous Media

Türkçe

A platinum electrode was coated with Sn in order to study the electrochemical behavior of the Snbased modified electrode in an acidic electrolyte.A deep eutectic solvent consisting of ethylene glycol and choline chloride (called Ethaline) was used as a deposition electrolyte by applying different voltage and time at two different temperatures (room temperature and 55 °C).The tin-coated platinum electrode was immersed in Na 2 SO 4 and KOH solutions for the formation of tin oxide and tin hydroxide, respectively.Tin hydroxide and tin oxide films cycled in H 2 SO 4 were not electroactive and these films cannot be used in acidic media for electrochemical devices.Sn electrode electrodeposited at high temperature was more than 500 times thicker than that at room temperature (20±2 °C).Thick SnO and Sn(OH) 2 films were not electroactive in acidic media the same as thin ones.Sn electrode electrodeposited from deep eutectic solvent at 55 °C and treated with an acidic solution was cycled in alkaline electrolyte.The reduction of the resulted film in KOH appeared at higher potential.This electrode could be used for the hydrogen evolution reaction in alkaline media.