CoO-Co nanocomposite anode with enhanced electrochemical performance for lithium-ion batteries

COO-Co nanocomposite films were successfully deposited at room temperature by pulsed laser deposition as an anode material for lithium-ion batteries. The prepared nanocomposite exhibited enhanced performance, such as excellent cycling stability (830 mA hg(-1) at a specific current of 500 mAg(-1) after 200 cycles) and high rate capability (578 mA hg(-1) at 10,000 mAg(-1)). The outstanding electrochemical performance can be ascribed to the nanocrystalline structure of CoO and the presence of Co nanoparticles, which could sustain high strain, enhance reaction kinetics and improve conductivity. (C) 2016 Elsevier Ltd. All rights reserved.