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.