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How fuel cell membranes degrade

How fuel cell membranes degrade

by | Sep 15, 2020 | Germany, worldwide

test setup
Test setup, © Fraunhofer ISE

Understanding how the presence of cations causes polymer electrolyte membranes to degrade is important to advancing PEM research. Fraunhofer ISE has been focused on analyzing various types of cations for their impact on perfluorosulfonic acid (PFSA) membranes. This analysis is significant in understanding the catalytic effect individual cations have on forming radicals that attack PFSA polymers. How chemical stable these polymers are was investigated using Fenton’s reaction.

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Effect of hydrogen on materials

Effect of hydrogen on materials

by | Oct 7, 2019 | Germany, worldwide

Stress-strain curves of hollow samples filled with hydrogen or nitrogen, with an internal pressure of 70 bar, tested at a draw-off rate of 3.5 µm/min.
Stress-strain curves of hollow samples filled with hydrogen or nitrogen, with an internal pressure of 70 bar, tested at a draw-off rate of 3.5 µm/min.

Atomic hydrogen partly diffuses into materials during production and operation. If this results in degradation of the material properties, the term hydrogen embrittlement is used. The Fraunhofer IWM has set itself the task of better understanding and mastering such chemical processes and their consequences. For this purpose, a new laboratory for material qualification for hydrogen applications has now been set up.

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The optimized use of HT-PEM fuel cells in CHP units

The optimized use of HT-PEM fuel cells in CHP units

by | Nov 5, 2015 | Europe

CISTEM-reformer

Reformer, developed by ICI-Caldaie Spa

Intelligent power networks and smart grid systems are demanding increasingly decentralized technologies that combine the storage and conversion of energy. Before this backdrop, in the scope of the EU’s CISTEM project (Construction of Improved HT-PEM MEAs and Stacks for Long Term Stable Modular CHP Units), a combined heat and power technology (CHP) has been developed on the basis of high temperature polymer electrolyte membrane fuel cells (HT-PEM FCs), which is able to provide an electrical output of up to 100 kWel. In addition to electricity generation, the heat produced by the HT-PEM fuel cell is used locally (more…)