Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 16, Issue 38, Pages 20402-20405Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp02952f
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Developing an efficient electro-catalyst for water oxidation is essential for improving the performance, which holds the key for a number of energy conversion and storage devices. Here we report an effective method for fabricating a Ni-Co-O@Ni-Co-S hierarchical nanoarray, which showed a significantly improved activity relative to Ni-Co-O nanowire arrays for oxygen evolution reactions. The enhanced performance was attributed to the secondary formed Ni-Co-S nanoplatelets which not only acted as efficient electro-catalysts, but also facilitated the electrolyte penetration and increased the surface area.
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