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Composite perfluorinate membranes

Fuel Cell Technology and Applications

Polymer electrolyte membrane fuel cells and systems (PEMFC)

Membrane materials

  1. M. Nakao,
  2. M. Yoshitake

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f303036

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Nakao, M. and Yoshitake, M. 2010. Composite perfluorinate membranes. Handbook of Fuel Cells. .

Author Information

  1. Asahi Glass Co. Ltd., Yokohama, Japan

Publication History

  1. Published Online: 15 DEC 2010

Abstract

As typical composite perfluorinated membranes applied to proton exchange membrane fuel cells, two types of membranes with different reinforcements are reviewed, focusing on their preparation methods, mechanical and electrochemical properties.

One is Gore-select® which is reinforced with a porous polytetrafluoroethylene (PTFE) sheet. The thin membrane is prepared by impregnating a solution of perfluorinated ionomer into a thin PTFE porous sheet. The other is PTFE micro-fibril reinforced membrane. The thin membrane is prepared by stretching a thicker composite film. Compared with non-reinforced membranes, the composite membranes have many advantages both in mechanical properties and in electrochemical performance.

Keywords:

  • Chlor-alkali-process;
  • membrane process;
  • equivalent weight;
  • proton exchange membrane fuel cell (PEMFC);
  • proton exchange membrane (PEM);
  • hydrogen permeability;
  • ion exchange capacity (IEC);
  • ion exchange membranes;
  • ionomer;
  • membrane;
  • membrane electrode assembly (MEA);
  • membrane resistance;
  • Nafion®;
  • Nafion® membranes;
  • PEM fuel cell;
  • perfluorinated ion exchange membrane;
  • perfluorinated ionomer membranes;
  • perfluorinated membrane;
  • platinum loading;
  • porous polytetrafluoroethylene (PTFE);
  • PTFE fibril;
  • PTFE yarn;
  • reinforced membrane;
  • resistance;
  • tensile elongation;
  • tensile strength;
  • thin membrane;
  • water-permeation;
  • water uptake