Study on the Performance of β-MnO₂–Lithium-Ion Full Battery

Abstract—In this paper the β-MnO₂ nanoparticles are prepared by thermal decomposition of MnCO₃, and characterized by scanning electron microscopy, thermogravimetry and differential scanning calorimeter, surface area and pore size analyzer, reflectance infrared spectrometer, X-ray powder diffractometer and energy dispersive spectrometer. The porous lithium foil/graphite is used as the anode for β-MnO₂–Li-ion full battery, and the charge-discharge of full battery is tested with the galvanostatic current in the potential range of 4.0–2.0 V, the discharge capacities at higher current densities of 0.5 mA cm^–2 are maintained at around 100.0 mA h g^–1 for 20–300 cycles. The full battery can effectively improve the discharge capacity and cycle life.