| 초록 |
This work demonstrates a one-step method to immobilize Fe and Zn on N doped carbon foam (FZ/NC) via carbonization of suitable precursors. The FE-SEM images of FZ/NC confirmed the formation of foam like structure wherein small metal particles were seen embedded in a porous carbon matrix. EDS analysis and elemental mapping images of these samples showed presence of N, C, O, Zn, and Fe. FZ/NC sample prepared by calcination at 800 ⁰C showed highest catalytic activity for oxygen evolution reaction and required overpotential of only 232 mV to attain the benchmark current density of 10 mA cm -2 . The results from different characterizations and electrochemical analysis indicate that the high activity of Fe,Zn/NC originates from its high surface area and low charge transfer resistance |
