Nickel Foam-Supported Porous NiO ∕ Ag Film Electrode for Lithium-Ion Batteries

Abstract

Porous film was deposited on a nickel foam substrate by a chemical bath deposition technique at room temperature, and the film was prepared by loading the film with Ag nanoparticles. The film with a thickness of about is constructed by nanoflakes, in which the Ag nanoparticles with sizes of about are highly dispersed. As an anode for lithium-ion batteries, its initial coulombic efficiency is as high as 70%. The discharge–charge curve and cyclic voltammograms show that the film electrode exhibits smaller potential hysteresis and weaker polarization as compared to the film electrode. The specific capacity after 50 cycles for the film is at , at , and at , higher than that of ( at , at , and at ). The improvement of these electrochemical properties is attributed to the Ag nanoparticles, which enhanced the electrical conduction of the electrode.