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Issue 27, 2013
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Synthesis and electrocatalytic activity of highly porous hollow palladium nanoshells for oxygen reduction in alkaline solution

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Abstract

A series of hollow Pd nanoshells are prepared by employing Co nanoparticles as sacrificial templates with different concentrations of a Pd precursor (1, 6, 12, 20, and 40 mM K2PdCl4), denoted hPd-X (X: concentration of K2PdCl4 in mM unit). The synthesized hPd series are tested as a cathodic electrocatalyst for oxygen reduction reaction (ORR) in alkaline solution. The morphology and surface area of the hPd catalysts are characterized using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and cyclic voltammetry (CV). Rotating disk electrode (RDE) voltammetric studies show that the hPd-20 (prepared using 20 mM K2PdCl4) has the highest ORR activity among all the hPd series, while being comparable to commercial Pd and Pt catalysts (E-TEK). The more facilitated ORR at hPd-20 is presumably induced by the enhanced Pd surface area and efficiently high porosity of Pd nanoshells.

Graphical abstract: Synthesis and electrocatalytic activity of highly porous hollow palladium nanoshells for oxygen reduction in alkaline solution

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Publication details

The article was received on 14 Feb 2013, accepted on 15 May 2013 and first published on 15 May 2013


Article type: Paper
DOI: 10.1039/C3CP50661D
Citation: Phys. Chem. Chem. Phys., 2013,15, 11461-11467
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    Synthesis and electrocatalytic activity of highly porous hollow palladium nanoshells for oxygen reduction in alkaline solution

    Y. Cho, J. E. Kim, J. H. Shim, C. Lee and Y. Lee, Phys. Chem. Chem. Phys., 2013, 15, 11461
    DOI: 10.1039/C3CP50661D

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