Accession Number:

ADA433374

Title:

Intermediate Temperature Polymer Electrolyte Incorporated With Polyoxometalates For Fuel Cell Applications

Descriptive Note:

Conference paper

Corporate Author:

ARMY RESEARCH LAB ADELPHI MD

Report Date:

2004-12-01

Pagination or Media Count:

3.0

Abstract:

We report here some results of proton conducting inorganicorganic hybrid polymer membrane materials that were synthesized by sol-gel process using organically modified alkoxysilane precursor with polyoxometalates of different structures. Polyoxometalates H3PW12O40, H4SiW12O40, and H6P2W18O62 were chosen for the study. The proton conductivity of the membrane made with the above polyoxometalates increased with the increase of the temperature in the presence of saturated water vapor, measured with a four-electrode configuration, and at 100 degree C the conductivity of the membranes is found to be in the range of 10exp -3 Oexp -1cm. Thermal analysis of the membranes showed that the membrane materials have different weight loss profile with structurally different polyoxometalates being incorporated.

Subject Categories:

  • Polymer Chemistry
  • Electrochemical Energy Storage
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE