A novel polytype - the stacking fault based gamma-MoO3 nanobelts

作者：Slawinski Wojciech A; Fjellvag Oystein S; Ruud Amund; Fjellvag Helmer

来源：Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials , 2016, 72(2): 201-208.

DOI：10.1107/S2052520615024804

• stacking faults
• X-ray diffraction
• diffuse scattering
• transmission electron microscopy
• selected area electron diffraction

gamma-MoO3 nanobelts prepared by hydrothermal synthesis were studied by synchrotron radiation powder diffraction, scanning electron microscopy, transmission electron microscopy and selected area electron diffraction. Their nm dimensions, in particular in two crystallographic directions, have a profound influence on electrochemical properties during cycling as the cathode material in lithium-ion batteries (LIBs). The diffraction analysis shows clearly that the crystal structure for the gamma-MoO3 nanobelts differs significantly from that of bulk gamma-MoO3. The observed powder diffraction pattern, with asymmetric peaks, extremely broad peaks, as well as additional or absent diffraction peaks, is fully described by means of a model based on stacking disorder of MoO3 slabs.

• 出版日期2016-4