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Nanostructured transition metal oxides are promising alternative anodes for lithium ion batteries.Li-ion storage performance is expected to improve if high packing density energy particles are available.Herein,Mn_2O_3 microspheres with a ca.18 μm diameter and a tapped density of 1.33 g/cm~3 were synthesized by a facile solvothermal-thermal coversion route.Spherical MnCO_3 precursors were obtained through solvothermal treatment and they decomposed and converted into Mn_2O_3 microspheres at an annealing temperature of 700 C.The Mn_2O_3 microspheres consisted of Mn_2O_3 nanoparticles with an average 40 nm diameter.These porous Mn_2O_3 microspheres allow good electrolyte penetration and provide an ion buffer reservoir to ensure a constant electrolyte supply.The Mn_2O_3 microspheres have reversible capacities of590 and 320 mAh/g at 50 and 400 mA/g,respectively.We thus report an efficient route for the fabrication of energy particles for advanced energy storage.
Nanostructured transition metal oxides are promising alternative anodes for lithium ion batteries. Li-ion storage performance is expected to improve if high packing density energy particles are available. Heinin, Mn_2O_3 microspheres with a ca.18 μm diameter and a tapped density of 1.33 g / cm ~ 3 were synthesized by a facile solvothermal-thermal coversion route.Spherical MnCO_3 precursors were obtained through solvothermal treatment and they were decomposed and converted into Mn_2O_3 microspheres at an annealing temperature of 700 C. The Mn_2O_3 microspheres consisted of Mn_2O_3 nanoparticles with an average of 40 nm diameter. The porous Mn_2O_3 microspheres allow good electrolyte penetration and provide an ion buffer reservoir to ensure a constant electrolyte supply. The Mn_2O_3 microspheres have a reversible capacity of 590 and 320 mAh / g at 50 and 400 mA / g, respectively. Thus reported an efficient route for the fabrication of energy particles for advanced energy storage.