Synthesis and Characterization of Vanadium Oxide Aerogels.
Abstract
Vanadium pentoxide aerogels were synthesized by supercritical drying with CO2. The aerogels were prepared using a variety of sol compositions from the system VO(OC3H7)3/H2O/acetone. The materials were found to be of fairly low density (0.04g/cu cm to 0. lg/cu cm) with surface areas in the range of 300 to 400 meters squared/g. Chemical and structural studies indicate that the aerogels are hydrated oxides of composition V2O5 nH2O with n = 2.0 to 2.2 and possess a fibrous morphology. When partially dehydrated, the vanadate aerogels exhibit electron transport with conductivity and activation energy values comparable to those of aerogels. Electrochemical measurements demonstrate that lithium can be intercalated reversibly into the structure. jg p.2
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 14, 1995
- Accession Number
- ADA296963
Entities
People
- Bruce S. Dunn
- F. Chaput
- K. Salloux
- P. Fuqua
Organizations
- University of California, Los Angeles