| 초록 |
Oxygen reduction reaction (ORR), which is the rate determining step for fuel cells such as proton-exchange membrane and direct methanol fuel cells. Platinum has been the standard for oxygen reduction reaction (ORR) catalyst for over a century. However, the Pt catalyst suffers from the crucial disadvantages of high cost, large overpotential loss, and limited long-term reliability. In this study, we make a Fe-porphyrin-like carbon nanotube which was growth by plasma-enhanced chemical vapor deposition(PECVD). x-ray photoemission spectroscopy and first-principles electronic structure calculations were used to characterize the incorporation of porphyrinic Fe-N4 into the side wall of CNT. The resulting Fe-porphyrin-like nanotube shows an excellent oxygen reduction catalytic properties with the superior structural stability. |
