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

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 an initial high discharge capacity of 708.4 mAh g(-1), superior rate capability and stable cycling performance at room temperature, the specific capacity is 102.5 mAh g(-1) after 500 cycles at a current density of 0.1 A g(-1). Additionally, at an extreme temperature of 0 degrees C, the discapacity can reach 138.2 mAh g(-1) at a current density of 0.05 A g(-1). At high temperature of 50 degrees C, the reversible discharge capacity is up to 216.5 mAh g(-1) under the same condition. It is believed that this contribution may lay the foundation for the application of perovskites in other rechargeable batteries and energy storage devices. (C) 2020 Elsevier Inc. All rights reserved.

Automated summary

Calcium Manganese Oxide (CaMnO3) as a novel anode material for lithium ion batteries demonstrates superior electrochemical performance, achieving high discharge capacity and stable cycling performance at different temperatures. This study may pave the way for the application of perovskites in other rechargeable batteries and energy storage devices.