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Design approaches for determining local current and membrane resistance in polymer electrolyte fuel cells (PEFCs)

Advances in Electrocatalysis, Materials, Diagnostics and Durability

Advanced diagnostics, models and design

Low-temperature fuel cells

  1. S. A. Freunberger,
  2. M. Reum,
  3. F. N. Büchi

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f500042

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Freunberger, S. A., Reum, M. and Büchi, F. N. 2010. Design approaches for determining local current and membrane resistance in polymer electrolyte fuel cells (PEFCs). Handbook of Fuel Cells. .

Author Information

  1. Paul Scherrer Institute, Villigen PSI, Switzerland

Publication History

  1. Published Online: 15 DEC 2010

Abstract

In polymer electrolyte fuel cells, several relevant scales determine the local current distribution. For the scales of flow field structures, the full cell and in-between-cells in a stack, different methods have been developed for the local current measurement. The respective measurement principles on the three scales are introduced and discussed. On the full cell scale, a number of methods based on some sort of segmented cell have been developed and have become a standard diagnostic tool, whereas on the channel/rib scale only one method, which uses the current drain as in situ shunt resistor has been put forward.

The methods for measuring local current density on the different scales form a basis for all methods determining the local membrane resistance.

Keywords:

  • polymer electrolyte fuel cell;
  • current distribution;
  • membrane resistance distribution;
  • channel/rib scale;
  • full cell scale;
  • stack scale