Spongelike Nanosized Mn₃O₄ as a High-Capacity Anode Material for Rechargeable Lithium Batteries

Abstract

Mn 3 O 4 has been investigated as a high-capacity anode material for rechargeable lithium ion batteries. Spongelike nanosized Mn 3 O 4 was synthesized by a simple precipitation method and characterized by powder X-ray diffraction, Raman scattering and scanning electron microscopy. Its electrochemical performance, as an anode material, was evaluated by galvanostatic discharge–charge tests. The results indicate that this novel type of nanosized Mn 3 O 4 exhibits a high initial reversible capacity (869 mA h/g) and significantly enhanced first Coulomb efficiency with a stabilized reversible capacity of around 800 mA h/g after over 40 charge/discharge cycles.