Standard Article

Alkaline anion-exchange membranes for low-temperature fuel cell application

Advances in Electrocatalysis, Materials, Diagnostics and Durability

Conductive membranes for low-temperature fuel cells

Novel materials

  1. J. R. Varcoe,
  2. S. D. Poynton,
  3. R. C. T. Slade

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f500021

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Varcoe, J. R., Poynton, S. D. and Slade, R. C. T. 2010. Alkaline anion-exchange membranes for low-temperature fuel cell application. Handbook of Fuel Cells. .

Author Information

  1. University of Surrey, Surrey, UK

Publication History

  1. Published Online: 15 DEC 2010

Abstract

This review introduces alkaline anion-exchange membranes (AAEM), the alkaline equivalents to the better known proton-exchange membranes (PEM), their chemistries, and their applications in hydrogen solid alkaline fuel cells (SAFC). There has been a recent increase in understanding of AAEM behaviour in SAFCs; however, the field is still in its infancy compared to proton-exchange membranes fuel cells (PEMFCs). Current AAEMs only exhibit adequate properties for application in SAFCs at higher humidities. Thinner AAEMs perform best due to facilitated supply of reactant water to the cathode oxygen reduction sites and reduced internal resistances. Further developments in alkaline ionomers are urgently required for high performance SAFCs.

Keywords:

  • anion-conductive membrane;
  • hydroxide anion conductivity;
  • CO2 tolerant alkaline fuel cells;
  • alkaline ionomer;
  • alkaline polymer exchange membrane fuel cell;
  • quaternary functional groups;
  • thermochemical stability;
  • benzyltrimethylammonium