| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 182776 | Electrochemistry Communications | 2006 | 5 Pages |
Abstract
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 VO 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.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Ch.V. Subba Reddy, Ai-Ping Jin, Xia Han, Quan-Yao Zhu, Li-Qiang Mai, Wen Chen,