Finnish University Team’s New Fuel Cell Manufacturing Method Cuts Catalyst Cost 60%

December 22nd, 2011 by Andrew

Photo courtesy Aalto University

Researchers at Aalto University in Finland have developed a new way of manufacturing fuel cells much more cheaply than those currently in use, according to a university news release.

Though they’re used to produce electricity rathter than store it, fuel cells are similar to batteries in design and structure. The electrochemical reactions that take place inside fuel cells that produce electricity require coating their anodes with a catalyst. In the case of proton exchange membrane (PEM) fuel cells used in vehicles, that’s typically been platinum in a very fine powder form, which adds significantly to their manufacturing cost.

Rather than coating the fuel cell anode with platinum, Aalto University researchers’ new approach entails using atomic layer deposition (ALD) to coat them with another corrosion-resistant noble metal – palladium. An ounce of nearly pure palladium currently sells for less than half that of platinum. Adding to potential cost savings, Aalto University’s ALD method requires 60% less catalyst than currently used methods.

“Researchers haven’t been able to achieve savings of this magnitude before with materials that are commercially available,” Aalto University Docent Tanjz Kallio said.

The PEM fuel cells in use in a growing range of vehicles today use hydrogen as a fuel. The Aalto University research team is also working on improving fuel cells that use ethanol or methanol for fuel. It’s also possible to use palladium as a catalyst in these fuel cells, according to the research team.

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Tags: Aalto University, ALD, atomic layer deposition, Finland clean tech, fuel cell catalysts, Fuel Cells, hydrogen fuel cells, palladium, PEM fuel cells, platinum, proton exchaange membrane fuel cells

About the Author

Andrew I've been reporting and writing on a wide range of topics at the nexus of economics, technology, ecology/environment and society for some five years now. Whether in Asia-Pacific, Europe, the Americas, Africa or the Middle East, issues related to these broad topical areas pose tremendous opportunities, as well as challenges, and define the quality of our lives, as well as our relationship to the natural environment.

Hucul

A few years ago GM announced that they could cut the platinum loading almost 10 fold at the anode on a working fuel cell. Cutting the standard platinum loading by 2 fold and using palladium instead of platinum doesn’t reaaly help much. Improvements are most needed at the cathode.