Nano-size multiple metal oxide anode electrodes synthesized from layered double hydroxides — Electrochemical reaction mechanism and surface morphology change during reaction with lithium ion
2014
Abstract Electrochemical properties of nano-size Ni–V, Ni–Fe and Mg–Fe multiple metal oxides, prepared from layered double hydroxides as precursors, for the anode electrode of lithium battery has been investigated using cyclic voltammetry, AC-impedance and ex-situ by SEM observation. In the CV curves of N–V multiple metal oxide, it became clear that the reaction voltage of vanadium–nickel oxide system shifted to lower voltage than non-dope NiO. AC-impedance and the morphology observation results that the electrochemical reaction of multiple metal oxides with lithium ion proceeds via the two-step reaction: the surface film formation above 1.0 V and the subsequent conversion reaction below 1.0 V.
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