Chemical Engineering Journal, Vol.315, 583-590, 2017
Synthesis of unique hierarchical mesoporous layered-cube Mn2O3 by dual-solvent for high-capacity anode material of lithium-ion batteries
Unique hierarchical mesoporous layered-cube Mn2O3 has been synthesized in dual-solvent by a solvothermal method. The structure and morphology of the as-prepared materials were analyzed by Xray diffraction and electron microscope. The results show that the as-prepared sample can be indexed as rarely reported orthorhombic Mn2O3 with layered-cube morphology, and the possible formation mechanism is speculated. When evaluated as anode materials, the layered-cube Mn2O3 shows good electrochemical properties with high discharge capacity of 1664.7 mAh g(-1) at 1 A g(-1), maintains capacity of 906.8 mAh g(-1) after 100 cycles. Especially, sample maintains original morphology even at high current density (I A g(-1)) after 100 cycles. The excellent cycle stability and superior rate performance are attributed to hierarchical mesoporous structure in conjunction with its unique layered -cube, which can offer more ions and electrons transporting channels from different directions, provide high interfacial lithium storage and prevent the collapse of structure. (C) 2017 Elsevier B.V. All rights reserved.
Keywords:Hierarchical mesoporous layered-cube;Mn2O3;Dual-solvent;High-capacity;Anode material;Lithium-ion batteries