多孔碳基材料中氰基桥连双金属活性位用于氧还原反应

Cyanide-Bridged Bimetallic Active Site in Porous Carbon-Matrix for Oxygen Reduction Reaction

以双金属化合物{[Co(bpy)_(2)]_(3)[Fe(CN)_(6)]_(2)}[Fe(CN)_(6)]_(1/3)为前驱体,采用纳米灌注法制备了具有Fe—N、Co—N和Fe—C≡N—Co活性结构的Fe、Co、N掺杂介孔Fe‑Co‑N‑GC催化剂。Fe‑Co‑N‑GC具有较高的比表面积和石墨化程度,使其氧还原反应(ORR)催化性能显著提高。Fe‑Co‑N‑GC催化剂在ORR过程中表现出优异的稳定性和抗甲醇性能。

Using special compound{[Co(bpy)_(2)]_(3)[Fe(CN)_(6)]_(2)}[Fe(CN)_(6)]_(1/3)as a precursor,an ordered mesoporous Fe-Co-N-doped graphite-based catalyst(Fe-Co-N-GC)with the embedding Fe—N,Co—N,and Fe—C≡N—Co active sites was prepared by a nano-casting technique.Together with the high surface area and graphitization degree,the catalytic performance of Fe-Co-N-GC for oxygen reduction reaction(ORR)was remarkably enhanced.This Fe-Cobased bimetallic catalyst also exhibited superior durability and good tolerance to methanol in ORR.