Electrocatalytic Activity of Electrodeposited Trimetallic Ni-Fe-Sn in Ethanol
Rinda Mulmeyda (a), Yusmaniar (b), Afrizal (b), Setia Budi (b*)

a) The Center for Science Innovation, Arva Building, Jl. RP. Soeroso, Jakarta Pusat 10350, Indonesia
b) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta Timur 13220, Indonesia
*setiabudi[at]unj.ac.id

Abstract

Although platinum exhibits high electrocatalytic activity toward the electrooxidation of ethanol, its high cost and susceptibility to poisoning by CO species have driven the development of non-precious metal-based electrocatalysts as an alternative. A trimetallic electrocatalyst containing Nickel (Ni), Iron (Fe), and Tin (Sn) was prepared via an electrodeposition method and evaluated for the electrooxidation of ethanol. Electrocatalytic activity for ethanol electro-oxidation (EOR) was evaluated using CV, LSV, and EIS in a 1 M KOH and 1 M ethanol solution. The Ni-Fe-Sn electrocatalyst exhibited a lower Tafel slope of 38.42 mV.dec-1, an small Rct value of 2.15 ohm. Furthermore, the sustained activity over 100 cycles CV testing indicate good electrocatalytic performance. Thus, this work reveals the catalytic performance of the new non-noble Ni-Fe-Sn electrocatalysts towards EOR which may provide new ideas to tailor more powerful and novel catalysts in the future.

Keywords: electrodeposition, electrocatalyst, ethanol electro-oxidation, Ni-Fe-Sn

Topic: Energy and Environmental Physics