Cr2O3 nanocrystal anode materials with improved cyclic stability for lithium ion batteries

The cyclic stability of Cr 2 O 3 is very poor due to the large volume change during lithiation/delithiation. In this study, we have found that Cr 2 O 3 nanocrystals synthesized by using a simple hydrothermal method can improve its cyclic stability. Sample calcined at 430 °C has uniform size, compact structure and high crystallization degree. These Cr 2 O 3 nanocrystals exhibit a stable cyclic performance of 185 mAh g −1 after 100 cycles at 100 mA g −1 . It is useful in real life, such as providing power consumption for minitype device, etc.