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Cu2O microspheres were successfully encapsulated by graphene oxide (GO) nano-sheets and used directly as the anode material for lithium ion batteries. The core–shell structured Cu2O@GO composite delivered a reversible capacity of 458mAhg−1 at a current density of 100mAg−1 after 50 cycles. Even at a high charge–discharge rate of 1000mAg−1, Cu2O@GO still demonstrated a reversible capacity of 240mAhg...
Spherical LiNiO2@LiCoO2 as cathode material for lithium ion batteries was synthesized by firing the mixture of β-NiOOH@β-CoOOH and LiOH at low temperature in air atmosphere. The effect of synthesis conditions on the structure of the resultant samples was investigated by X-ray diffraction, scanning electron microscope, and energy dispersive spectroscope. Spherical LiNiO2@LiCoO2 obtained at 600 °C for...
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