Abstract:
Fuel cells attract validation every day due to the important characteristics of Pt, Pd,
Ru and Rh as the traditional catalysts, including no mobile portion and energy
generation, but also because they are uncommon and costly, they also produce toxic,
intermediate, and slow-cinematic reactions. In this study, CoSe/CNT material was
prepared which is responsible for methanol oxidation reaction in methanol fuel cell.
The CoSe/CNT material has been synthesized through using of selenium (Se) along
with cobalt chloride hexahydrate. For this preparation, single step hydrothermal is
applied. XRD confirmed the successful composite synthesis along with SEM.x
Laterally, the synthesized material has showed remarkable use in electrochemical
reaction such as oxidation reaction of methanol studies. The trustable technique such
as cyclic voltammetry has been applied which confirmed that the methanol oxidation
is a diffusion-controlled process and forward peak current and peak potential increase
with the scan rate when varying between 25, 50, 100, 150 and 200 mV/s. This
technique was performed in acidic medium on modified glassy carbon electrode
(GCE) via three electrode electrochemical system. The oxidation reaction of methanol
is catalyzed by CoSe@CNTs catalyst and remarkable current density with peak value
of 6.4 mA/cm2 by using 0.6 potential with scan rate of 50mV/s. The lower charge
transfer resistance Rct has been confirmed by using electrochemical impedance
spectroscopy and catalyst was highly stable
