期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 14, 页码 11692-11697出版社
AMER CHEMICAL SOC
DOI: 10.1021/am502480v
关键词
vanadium oxide; nanotubes; Na battery; hydrothermal synthesis; Ni doping; cationic exchange
资金
- Samsung Advanced Institute of Technology
In this study, we demonstrated the intercalation of Na in hydrothermally synthesized VOx nanotubes (NTs) and Ni-doped VOx NTs. The changes induced in the structures of the two nanomaterials during the Na intercalation process were investigated through X-ray diffraction (XRD) analyses. It was observed that the initial capacity and rate performance of the Ni-doped VOx NTs were improved. The results of X-ray photoelectron spectroscopy (XPS) and conductance measurement confirmed that higher initial capacity and rate performance were attributed to an increase in the valence states of vanadium and increased conductivity after the Ni exchange process.
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