Porous Multicomponent Mn–Sn–Co\nOxide Microspheres as Anodes for High-Performance Lithium-Ion Batteries

Abstract

Porous multicomponent\nMn–Sn–Co\noxide microspheres (MnSnO₃–MC400 and MnSnO₃–MC500) have been fabricated using CoSn­(OH)₆ nanocubes\nas templates via controlling pyrolysis of a CoSn­(OH)₆/Mn_0.5Co_0.5CO₃ precursor at different temperatures\nin N₂. During the pyrolysis process of CoSn­(OH)₆/Mn_0.5Co_0.5CO₃ from 400 to 500 °C,\nthe part of (Co,Mn)­(Co,Mn)₂O₄ converts into\nMnCo₂O₄ accompanied with structural transformation.\nThe MnSnO₃–MC400 and MnSnO₃–MC500\nmicrospheres as secondary nanomaterials consist of MnSnO₃, MnCo₂O₄, and (Co,Mn)­(Co,Mn)₂O₄. Benefiting from the advantages of multicomponent synergy\nand porous secondary nanomaterials, the MnSnO₃–MC400\nand MnSnO₃–MC500 microspheres as anodes exhibit\nthe specific capacities of 1030 and 750 mA h g^–1 until 1000 cycles at 1 A g^–1 without an obvious\ncapacity decay, respectively.