| 초록 |
Oxygen reduction reaction (ORR) is an important electrocatalytic process occurs on cathode in advanced energy technologies, like fuel cells and rechargeable metal-air batteries. However, it has slow kinetics. Pt is known as the state-of-the-art catalyst for ORR. Nevertheless, Pt is precious and rare apart from being poor stable and low tolerant to methanol and CO. N-doped carbon materials show good activity for ORR but the performance is inferior to Pt. In this work, I report N, P and S doped graphene-based porous carbon foam (GPCF) in a facile route using inexpensive chemicals without using any template. The N, P and S doped GPCF showed high specific surface area of 1107 m2 g-1, high pore volume and porous structure. The catalyst exhibited excellent electrocatalytic performance for ORR, which was slightly better than the commercial Pt. Moreover, the catalyst followed four-electron transfer pathways for the reduction of O2 and better stability than Pt at 0.9 V vs. RHE. |
