화학공학소재연구정보센터
Powder Technology, Vol.377, 281-288, 2021
Constructing 3D MoO2/N-doped carbon composites with amorphous nanowires and crystalline nanoparticles for high Li storage capacity
Molybdenum dioxide (MoO2) suffers from large volume expansion and poor conductivity as anode material for lithium ion battery (LIB). Herein, the three-dimensional (3D) MoO2/N-doped carbon composites constructed by amorphous nanowires and crystalline nanoparticles (marked as 3D MoO2/NC composites) are prepared. It is worth mentioning that the conductivity could be largely improved as well as the volume expansion could be effectively relieved since the structure design including amorphous, carbon-composited and pony-size are taken, resulting in high Li storage capacity of MoO2. Benefiting from the especial structural feature, the 3D MoO2/NC composites exhibit an excellent electrochemical performance compared to the pristine crystalline MoO2 and display a higher capacity of 912 mAh g(-1) after 250 cycles at 0.1 A g(-1). The proposed structure design can be reference to prepare other electrode materials for boosting the Li storage properties. (C) 2020 Published by Elsevier B.V.