Angewandte Chemie International Edition
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Inside Back Cover: Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts (Angew. Chem. Int. Ed. 14/2014)
Iron carbide nanoparticles encased in thin graphitic layers are active towards oxygen reduction. In their Communication on page 3675 ff., W. Xing, Q. F. Li, and co-workers report that hollow spheres composed of these nanoparticles without surface nitrogen or metallic functionalities show high activity and stability in both acidic and alkaline media. The catalysts are synthesized in a one-step process.