Predicting Carbonate Species Ionic Conductivity in Alkaline Anion Exchange Membranes

Abstract

Advances in membrane synthesis techniques have produced polymer electrolyte membranes that are capable of transporting anions in alkaline membrane fuel cells (AMFCs). These anion exchange membranes (AEMs) are being considered for use in portable power applications. One of the challenges with AEMs is the presence of carbonate and bicarbonate, which can replace hydroxide ions in the membrane, reducing the ionic conductivity. An experimental water permeation technique that has been developed by our lab is used to predict hydroxide ionic conductivity in AEMs [1,2]. Using this method, the ionic conductivity of the membrane can be predicted for AEMs with carbonate and bicarbonate species present. Predicted results are validated using values for AEM ionic conductivity previously reported in the literature.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2012
Accession Number
ADA581743

Entities

People

  • Aldo A. Peracchio
  • Andrew M. Kiss
  • George J. Nelson
  • Kyle N. Grew
  • Timothy D. Myles
  • Wilson K. S. Chiu

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Carbon Dioxide
  • Carbonates
  • Cells
  • Charge Carriers
  • Coefficients
  • Conductivity
  • Diffusion
  • Diffusion Coefficient
  • Dissociation
  • Electrochemical Reactions
  • Fuel Cells
  • Fuels
  • Heat Of Activation
  • Ion Exchange
  • Magnetic Resonance
  • Military Research
  • Nuclear Magnetic Resonance

Fields of Study

  • Materials science

Readers

  • Computational Modeling and Simulation
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Underwater engineering and Marine Technology.

Technology Areas

  • Biotechnology