Ultrasonic Synthesis of α-MoO3 Nanobelt@CNTs Composite for Lithium Battery and its Electrochemical Performances

作者：Lu, Wanzheng; Chen, Xiaolan; Xue, Mingzhe^*; Cui, Yongli; Zhuang, Quanchao

来源：International Journal of Electrochemical Science, 2018, 13(1): 275-286.

DOI：10.20964/2018.01.04

• alpha-Moo(3) nanobelt@CNTs composite
• ultrasonic synthesis
• microscopic mechanism
• Nyquist plots

alpha-MoO3 nanobelt@CNTs composite is synthesized from alpha-MoO3 nanobelt and multi-walled carbon nanotubes (CNTs) via ultrasonic mixing process. XRD and SEM measurement prove the layer structure and nano-belt morphology of the product. Although alpha-MoO3 nanobelt@CNTs composite delivers less initial discharge capacity than pure alpha-MoO3 nanobelt, cycling performance is improved due to the introduction of CNTs into composite. Microscopic mechanism of Li+ transportation through alpha-MoO3 nanobelt@CNTs composite electrode is revealed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Nyquist plots of alpha-MoO(3)nanobelts@CNTs composite electrode vs. polarization potentials in the first discharge process shows that during Li+ intercalates into alpha-MoO3 nanobelts@CNTs composite electrode, SEI-film resistance (R-SEI), electronic transmission resistance (R-e), and charge transfer resistance (R-ct) play an important role in different periods (2.9-2.0 V, 2.0-1.5 V and 1.4-1.2 V), respectively.

• 出版日期2018-1
• 单位中国矿业大学（北京）; 同济大学