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【期刊论文】Mo doped vanadium oxide nanotubes: microstructure and electrochemistry
陈文, Wen Chen*, Liqiang Mai, Junfent Peng, Qing Xu, Quanyao Zhu
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-1年11月30日
Mo doped vanadium oxide nanotubes (VONT) were prepared via a rheological phase reaction followed by sely-assembling process and were heated at 400+ in an inertatmosphere. The nanotubes were characterixed by SEM. HRTEM, XRD, Raman spectroscopy, electrochemical investigation, etc, In contrast to the undoped VONTs, the interlayer distance between oxide layers in the (V0.99 Mo0.01) xONTs increases owing to replacement of some V in nanotubes by Mo with a larger inonic radius, resultiing in a shorten diffusion length fo Li ions and an improved electrochemical performance. Moreover, this study reveals that the electrochemical performance of (V0.99Mo0.01) xONTs is further enhanced by removing the residual organic template by heating in an inert atmosphere.
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陈文, Wen Chen*, Qing Xu, Yongsheng Hu, Liqiang Mai, Quanyao Zhu
,-0001,():
-1年11月30日
V2O5 xerogel films modified by poly(ethylene-oxide) (PEO) were obtained via sol-gel method. Investigations were conducted by X-ray diffractometry (XRD), Fourier transformation infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry. The results show that when V2O5 xerogel is modified by the intercalation of PEO, the H atoms in PEO are hydrogen-bonded with the O atoms in the V=O bonds of V2O5 xerogel, which effectively shields the electrostatic interaction between V2O5 interlayer and Li+ions. The reversibility of insertion/extraction of Li+ions is greatly improved with the modification of PEO in V2O5 xerogel.
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