Porous Mn2O3 microcubes with exposed {001} facets as electrode for lithium ion batteries

Abstract

A material designed to have a porous structure and exposed special crystal surface can simultaneously increase the Li-ion transfer speed and overcome volume expansion and thus improve the capacity and cycling stability of Li-ion batteries. In this study, porous Mn₂O₃ microcubes with exposed {001} planes have been successfully prepared by high-temperature annealing treatment with MnCO₃ microcubes as the precursor. The pore sizes can be tuned from 3.7 nm to 25 nm by changing the calcination temperature. As a Li-ion battery anode, porous Mn₂O₃ microcubes enable the delivery of a high reversible capacity of 658 mA h g⁻¹ over 100 cycles at 100 mA g⁻¹.