| 초록 |
As environmental issues have emerged, enormous interest in green energy technology is increasing. One of the most promising green energy technologies is the fuel cell, which produces the electricity by converting hydrogen and oxygen molecules into water. Efficient catalysts with stable electrochemical performance are demanded. The current catalysts contain noble metal elements, which have high price, so, transition metal dichalcogenides are promising catalysts with large surface area and the high density of the edges for hydrogen evolution reaction or oxygen reduction reaction . Even though TMDs have enormous active sites, their electrochemical performances are insufficient. So, we design a new hybrid catalyst, which consists noble metal nanoparticles of silver telluride supported by two-dimensional tungsten ditelluride. We synthesized and characterized WTe2 decorated by Ag2Te nanoparticles using X-ray diffraction, SEM and Raman spectroscopy. ORR performance of WTe2 decorated by Ag2Te nanoparticles shows that decorated silver telluride nanoparticles on tungsten ditelluride’s surface play a crucial role to convert oxygen into water molecules in the acid condition. |
