101. Improvement of Lithium Storage Performance of Molybdenum Trioxide by a Synergistic Effect of Surface Coating and Oxygen Vacancies
- Author
-
Yan Yu, Zhenzhong Yang, Chenglong Yang, Xiaowu Liu, and Lin Gu
- Subjects
Materials science ,Mechanical Engineering ,Diffusion ,Inorganic chemistry ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Oxygen ,0104 chemical sciences ,Anode ,Molybdenum trioxide ,Surface coating ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Mechanics of Materials ,Electrode ,Lithium ,0210 nano-technology ,Current density - Abstract
3D hierarchical flower-like carbon coated MoO3−x nanosheets (denoted as MoO3−x NS@C) have been successfully fabricated by a simple hydrothermal method. When used as anode for Li-ion batteries, the MoO3−x NS@C electrode exhibits excellent cycle performance and outstanding rate capabilities. The charge capacity can reach 1025 mAh g−1 over 150 cycles, and 62% of the charge capacity is retained when the current density increases to 2000 mA g−1. The improved lithium storage performance of MoO3−x NS@C is attributed to the synergistic effect of oxygen vacancies and the carbon coating, which not only enhance the electric conductivity and Li-ion diffusion coefficient but also lead to superior structural stability and cyclability of the MoO3−x NS@C electrode during repeated lithiation/delithiation process.
- Published
- 2016