|
چکیده
|
Tungsten disulfide with excellent structural features, including good electrical conductivity and a layered structure with multiple defects, has excellent catalytic performance and high stability as a suitable electrocatalyst for the oxygen reduction reaction. Nowadays, the production of catalysts with suitable oxygen reduction reaction activity and reasonable price is still one of the big challenges facing the electrocatalyst industry. In this research, reduced graphene oxide/ Tungsten disulfide (WS2/RGO) nanosheets have been synthesized by hydrothermal method. Characterization analyzes such as X-ray diffraction spectrum, scanning electron microscopy and EDX showed the successful synthesis of WS2/RGO nanocomposite. The results of the electrochemical experiments showed that the WS2/RGO nanostructure has remarkable electrocatalytic performance, including a high current density that is almost equal to that of platinum, and it can also exhibit charge transfer similar to that of platinum. In addition to the mentioned items, this nanocomposite exhibited very good stability over long periods of time. Therefore, the obtained results show that WS2/RGO nanocomposite can be used as an inexpensive and highly efficient electrocatalyst for ORR activity in electrocatalytic applications such as fuel cells, lithium ion batteries, supercapacitors, etc..
|