Perovskite-type CaMnO3 anode material for highly efficient and stable lithium ion storage

Abstract Lithium ion batteries are attracting ever increasing attention due to their advantages of high energy/ power density, environmental friendly, lifetime and low cost. As a star in the field of materials and energy, perovskites have received extensive attention due to their attracting physical and chemical properties. Herein, CaMnO3, one material from the perovskite family is introduced as a novel anode material for lithium ion batteries, and its electrochemical performance at different temperatures is systematically investigated. CaMnO3 has been synthesized using a liquid phase synthesis method followed by high temperature calcination. The as-obtained CaMnO3 exhibits superior rate capability and stable cycling performance at a current density of 0.2 A g-1 at room temperature, the specific capacity is 225.4 mAh g-1 after 90 cycles. Additionally, at an extreme temperature of 0 °C, the capacity can still reach 175.2 mAh g-1 after 300 cycles at a current density of 0.2 A g-1. It is believed that this contribution may lay the foundation for the application of perovskites in other rechargeable batteries and energy storage devices.