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

Title
Synthesis and electrocatalytic activity of highly porous hollow palladium nanoshells for oxygen reduction in alkaline solution
Authors
Cho Y.-B.Kim J.E.Shim J.H.Lee C.Lee Y.
Ewha Authors
이종목이영미심준호
SCOPUS Author ID
이종목scopus; 이영미scopus
Issue Date
2013
Journal Title
Physical Chemistry Chemical Physics
ISSN
1463-9076JCR Link
Citation
vol. 15, no. 27, pp. 11461 - 11467
Indexed
SCI; SCIE; SCOPUS WOS scopus
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. © 2013 the Owner Societies.
DOI
10.1039/c3cp50661d
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자연과학대학 > 화학·나노과학전공 > Journal papers
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