Synthesis of mesoporous orthorhombic LiMnO₂ cathode materials via a one-step flux method for high performance lithium-ion batteries

Mesoporous orthorhombic LiMnO₂ has been directly fabricated by a one-step flux method in this work. Benefiting from the unique mesoporous structure, the orthorhombic LiMnO₂ prepared through calcinating the mixture of flux LiOH · H₂O and Mn₂O₃ with various Li/Mn molar ratios shows enhanced lithium storage properties. When used as the cathode for lithium ion battery, the mesoporous orthorhombic LiMnO₂ has been found to exhibit a maximum discharge capacity of 191.5 mAh g⁻¹ and a high reversible capacity of 162.6 mAh g⁻¹ (84.9% retention) after 50 cycles at a current density of 0.1 C rate. These results demonstrate its potential application in high performance lithium-ion batteries. (paper)