Fuel Cell Support Testing. Delivery Order 0029: Fuel Cells for Aerospace Power

Abstract

The purpose of this effort was the basic advancement of high temperature solid oxide fuel cell electrolyte technology. This paper reports the effects of heterogeneously doped Al2O3 on the ionic conductivity of yttria stabilized zirconia (YSZ). At lower dopant concentration, grain growth occurred and the grain boundaries were re-formed. Subsequent increases in the dopant concentration decreased the transport of oxygen ions. the presence of Al2O3 also leads to a blocking effect. the net result of the two antagonistic influences is small and reflected by a relatively minor influence on conductivity.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2004
Accession Number
ADA430696

Entities

People

  • Binod Kumar

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Aluminum Oxides
  • Cells
  • Electrical Conductivity
  • Electrical Properties
  • Electron Microscopy
  • Energy
  • Energy Storage
  • Fuel Cells
  • Grain Growth
  • Grain Size
  • High Temperature
  • Materials
  • Measurement
  • Mechanical Properties
  • Solid Oxide Fuel Cells
  • Space Charge

Fields of Study

  • Materials science

Readers

  • Aerospace logistics and air mobility.
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Biotechnology
  • Space
  • Space - Hall-Effect Thruster