| Literature DB >> 21671653 |
Ruili Liu1, Christian von Malotki, Lena Arnold, Nobuyoshi Koshino, Hideyuki Higashimura, Martin Baumgarten, Klaus Müllen.
Abstract
A new class of macrocyclic metal-N(4) complexes [MN(4)](n) (M = Co and Fe) were designed and synthesized based on a triangular ligand. Their unique triangular trinuclear structure provides a high density of active sites and facilitates the reduction of dioxygen via a four-electron pathway. Among them, a [CoN(4)](3)/C catalyst (20 wt %) exhibits high catalytic activity and long-time stability for the oxygen reduction reaction (ORR) in alkaline conditions, superior to the commercial Pt/C catalyst. Such structurally well-defined [MN(4)](n) complexes provide a platform for a new generation of nonprecious metal catalysts (NPMCs) for fuel cell applications.Entities:
Year: 2011 PMID： 21671653 DOI： 10.1021/ja203776f
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419