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Title: Sol-gel-based template synthesis and Li-insertion rate performance of nanostructured vanadium pentoxide

Abstract

The authors have prepared nanostructured electrodes of orthorhombic V{sub 2}O{sub 5} using the template synthesis method. These electrodes were used to investigate the effects of Li-ion diffusion distance and surface area on V{sub 2}O{sub 5} rate capability. Nanowires of V{sub 2}O{sub 5} were prepared by depositing a precursor into the pores of microporous polycarbonate filtration membranes. This procedure yielded an ensemble of 115 nm diam, 2 {micro}m long nanowires of C{sub 2}{sub 5} which protruded from a V{sub 2}O{sub 5} surface layer like the bristles of a brush. The galvanostatic discharge performance of these nanostructured V{sub 2}O{sub 5} electrodes was compared to a thin-film electrode of similar V{sub 2}O{sub 5} mass and geometric area. The Li{sup +} storage capacity of the thin-film electrode was equivalent to that of the nanostructured electrode at low (C/20) discharge rates. However, at a rate of 200 C, the nanostructured electrode delivered three times the capacity of the thin film electrode. Above 500 C the nanostructured electrode delivered four times the capacity of the thin-film control electrode.

Authors:
;
Publication Date:
Research Org.:
Colorado State Univ., Fort Collins, CO (US)
OSTI Identifier:
20003169
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 146; Journal Issue: 9; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; SOL-GEL PROCESS; SYNTHESIS; LITHIUM; VANADIUM OXIDES; ELECTRODES; MEMBRANES; METAL-NONMETAL BATTERIES

Citation Formats

Patrissi, C.J., and Martin, C.R. Sol-gel-based template synthesis and Li-insertion rate performance of nanostructured vanadium pentoxide. United States: N. p., 1999. Web. doi:10.1149/1.1392451.
Patrissi, C.J., & Martin, C.R. Sol-gel-based template synthesis and Li-insertion rate performance of nanostructured vanadium pentoxide. United States. doi:10.1149/1.1392451.
Patrissi, C.J., and Martin, C.R. Wed . "Sol-gel-based template synthesis and Li-insertion rate performance of nanostructured vanadium pentoxide". United States. doi:10.1149/1.1392451.
@article{osti_20003169,
title = {Sol-gel-based template synthesis and Li-insertion rate performance of nanostructured vanadium pentoxide},
author = {Patrissi, C.J. and Martin, C.R.},
abstractNote = {The authors have prepared nanostructured electrodes of orthorhombic V{sub 2}O{sub 5} using the template synthesis method. These electrodes were used to investigate the effects of Li-ion diffusion distance and surface area on V{sub 2}O{sub 5} rate capability. Nanowires of V{sub 2}O{sub 5} were prepared by depositing a precursor into the pores of microporous polycarbonate filtration membranes. This procedure yielded an ensemble of 115 nm diam, 2 {micro}m long nanowires of C{sub 2}{sub 5} which protruded from a V{sub 2}O{sub 5} surface layer like the bristles of a brush. The galvanostatic discharge performance of these nanostructured V{sub 2}O{sub 5} electrodes was compared to a thin-film electrode of similar V{sub 2}O{sub 5} mass and geometric area. The Li{sup +} storage capacity of the thin-film electrode was equivalent to that of the nanostructured electrode at low (C/20) discharge rates. However, at a rate of 200 C, the nanostructured electrode delivered three times the capacity of the thin film electrode. Above 500 C the nanostructured electrode delivered four times the capacity of the thin-film control electrode.},
doi = {10.1149/1.1392451},
journal = {Journal of the Electrochemical Society},
number = 9,
volume = 146,
place = {United States},
year = {1999},
month = {9}
}