1300740-05-9Relevant academic research and scientific papers
Triangular trinuclear metal-N4 complexes with high electrocatalytic activity for oxygen reduction
Liu, Ruili,Von Malotki, Christian,Arnold, Lena,Koshino, Nobuyoshi,Higashimura, Hideyuki,Baumgarten, Martin,Muellen, Klaus
, p. 10372 - 10375 (2011)
A new class of macrocyclic metal-N4 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 [CoN4]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 [MN4] n complexes provide a platform for a new generation of nonprecious metal catalysts (NPMCs) for fuel cell applications.
NITROGEN-CONTAINING AROMATIC COMPOUNDS AND METAL COMPLEXES
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Page/Page column 80-81, (2011/05/11)
To provide nitrogen-containing aromatic compounds with excellent oxygen reduction activity, metal complexes containing them, and catalysts and electrodes employing the same, the present invention provides an aromatic compound satisfying the following conditions (a) and (b): (a) It has 2 or more structures surrounded by at least 4 coordinatable nitrogen atoms (which structures may be the same or different), (b) At least one of the nitrogen atoms composing the structure is a nitrogen atom in a 6-membered nitrogen-containing heterocyclic ring.
