Accession Number:

ADA310637

Title:

Synthesis and Properties of Vanadium Oxide Aerogel Films.

Descriptive Note:

Technical rept. 1 Jun 95-31 May 96,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF MATERIALS SCIENCE AND ENGINEERING

Report Date:

1996-06-18

Pagination or Media Count:

9.0

Abstract:

The fine colloid size, high surface area and controllable density of vanadium oxide aerogels make these materials interesting candidates for lithium insertion electrodes. Thin films of vanadium oxide aerogels were prepared using an alkoxide precursor sol and supercritical drying with CO2. Film preparation methods included spin coating of fine aerogel particles suspended in a solvent and dip coating of the precursor sol onto carbon paper substrates. The room temperature electrical conductivity of partially dehydrated materials V2O5 0.5 H2O varies from 10exp -5 Scm to 10exp -4 Scm depending upon the density of the final aerogel. Potential sweep measurements indicate that the films possess good insertion capacity approx. 2 Li a per V2O5 and can be cycled reversibly. p1

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Coatings, Colorants and Finishes
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE