Preparation and characterization of (PVP+V2O5) cathode for battery applications

被引：37

作者：

Reddy, CVS ^{[1
]}

Jin, AP ^{[1
]}

Han, X ^{[1
]}

Zhu, QY ^{[1
]}

Mai, LQ ^{[1
]}

Chen, W ^{[1
]}

机构：

[1] Wuhan Univ Technol, Inst Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 02期

关键词：

V2O5; xerogel; PVP; modification; reversibility;

D O I：

10.1016/j.elecom.2005.11.025

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The cathode films of V2O5 xerogel modified with polyvinyl pyrrolidone (PVP) were prepared using sol-gel method. Investigations were conducted by X-ray diffractometry, Fourier transformation infrared spectroscopy, X-ray photoelectron spectroscopy and cyclic voltammetry. The results show that the H atoms in PVP 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 when the V2O5 xerogel is modified by the intercalation of PVP. The reversibility of insertion/extraction of Li+ ions is greatly improved by modification of the V2O5 xerogel with PVP. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：279 / 283

页数：5

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