Formation of Mn–Cr mixed oxide nanosheets with enhanced lithium storage properties

Abstract

Novel carbon-free Mn₂O₃/MnCr₂O₄ hybrid nanosheets are synthesized through thermal decomposition of the facilely co-precipitated Mn–Cr binary hydroxide and a carbonate hybrid precursor. As an anode for lithium-ion batteries, the Mn₂O₃/MnCr₂O₄ electrode delivers a wonderful electrochemical performance, i.e., an enhanced stability of 913 mA h g⁻¹ at a current density of 1 A g⁻¹ after 300 cycles, and an excellent rate performance. The excellent electrochemical performance of the Mn₂O₃/MnCr₂O₄ electrode can be ascribed to the interconnected nanosheets and porous structure, as well as the possible synergistic effects between Mn and Cr mixed oxides.