Abstract
Abstract The Ni 12 P 5 hollow nanocapsule structure is synthesized adopting a facile one-pot hydrothermal method without any templates. The size of the obtained Ni 12 P 5 nanocapsules is about 20 nm, and the wall thickness is about 3 nm. The XPS spectra of Ni 12 P 5 samples were measured to identify the surface chemical composition and valence states. Oxygen evolution reaction results show that the onset overpotential of Ni 12 P 5 is 290 mV and clearly demonstrates the Tafel slope of 49.8 mV dec −1 . Meanwhile, the Ni 12 P 5 nanocapsules show excellent electrochemical properties with specific capacitance of 949 F g −1 at 1 A g −1 and 81% of the initial value after cycles. Excellent electrochemical performances demonstrate that the nickel phosphide from a facile synthesis strategy could be a candidate for high performance energy storage and conversion.
Published Version
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