TY - JOUR
T1 - Electrooxidation of ethanol on silver-reduced graphene oxide (Ag/rGO) surface – Effect of alloying with palladium
AU - Mudzunga, Vhahangwele
AU - Fakayode, Olayemi J.
AU - Mothudi, Bakang M.
AU - Mokrani, Touhami
AU - Maxakato, Nobanathi Wendy
AU - Sigwadi, Rudzani
N1 - Publisher Copyright:
© 2025 The Authors
PY - 2025/10
Y1 - 2025/10
N2 - The study examined the impact of alloying palladium (Pd) with silver-reduced graphene oxide (AgrGO) nanocomposites on ethanol electrooxidation. The electrocatalysts were synthesised using wet chemical method and characterized using conventional spectroscopic and microscopic techniques. The Pd1Ag1rGO composite demonstrated superior performance compared to Pd2Ag1rGO and AgrGO, attributed to its relatively smaller particle size of 5.3 nm, which enhances catalytic activity, a higher density of defects for better electron transfer, and improved electrochemical properties. It achieved an impressive exchange current density of 1.70 µA cm⁻², indicating rapid reaction kinetics, alongside lower charge transfer resistance. This research highlights the potential of Pd1/Ag1-rGO nanocomposites as an alternative to platinum electrocatalyst for efficient ethanol oxidation, supporting advancements in sustainable fuel cell technologies.
AB - The study examined the impact of alloying palladium (Pd) with silver-reduced graphene oxide (AgrGO) nanocomposites on ethanol electrooxidation. The electrocatalysts were synthesised using wet chemical method and characterized using conventional spectroscopic and microscopic techniques. The Pd1Ag1rGO composite demonstrated superior performance compared to Pd2Ag1rGO and AgrGO, attributed to its relatively smaller particle size of 5.3 nm, which enhances catalytic activity, a higher density of defects for better electron transfer, and improved electrochemical properties. It achieved an impressive exchange current density of 1.70 µA cm⁻², indicating rapid reaction kinetics, alongside lower charge transfer resistance. This research highlights the potential of Pd1/Ag1-rGO nanocomposites as an alternative to platinum electrocatalyst for efficient ethanol oxidation, supporting advancements in sustainable fuel cell technologies.
KW - Electrooxidation
KW - Ethanol
KW - Palladium, rGO
KW - Silver
UR - https://www.scopus.com/pages/publications/105012118879
U2 - 10.1016/j.ijoes.2025.101141
DO - 10.1016/j.ijoes.2025.101141
M3 - Article
AN - SCOPUS:105012118879
SN - 1452-3981
VL - 20
JO - International Journal of Electrochemical Science
JF - International Journal of Electrochemical Science
IS - 10
M1 - 101141
ER -
