Effect of modification by poly(ethylene oxide) on the reversibility of insertion/extraction of Li+ ion in V2O5 xerogel films

被引：98
|
作者：
Chen, W [1 ]
Xu, Q [1 ]
Hu, YS [1 ]
Mai, LQ [1 ]
Zhu, QY [1 ]
机构：
[1] Wuhan Univ Technol, Inst Mat Sci & Engn, Wuhan 430070, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2002年 / 12卷 / 06期
关键词：
D O I：
10.1039/b203056j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
V2O5 xerogel films modified by poly( ethylene oxide) (PEO) were obtained via the 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 the V2O5 xerogel is modified by the intercalation of PEO, the H atoms in PEO are hydrogen-bonded with the O atoms of the V=O bonds of the V2O5 xerogel, which effectively shielded against electrostatic interactions between the V2O5 interlayer and Li+ ions. The reversibility of insertion/extraction of Li+ ions is greatly improved by modification of the V2O5 xerogel with PEO.
引用
收藏
页码：1926 / 1929
页数：4
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