Duke Researchers Develop Ceramic Membrane that Permits Fuel Cells to Operate at Low Humidity and Higher Temperatures

Researchers at Duke’s Pratt School of Engineering have developed a membrane that allows fuel cells to operate at low humidity and theoretically at higher temperatures.

“The current gold standard membrane is a polymer that needs to be in a humid environment in order to function efficiently. If the polymer membrane dries out, its efficiency drops. We developed a ceramic membrane made of iron nanoparticles that works at much lower humidities. And because it is a ceramic, it should also tolerate higher temperatures.

“The efficiency of current membranes drops significantly at temperatures over 190 degrees Fahrenheit. However, the chemical reactions that create the electricity are more efficient at high temperatures, so it would be a big improvement for fuel cell technology to make this advance.”

Mark Wiesner, Ph.D., a Duke civil engineering professor

The membrane most commonly used today, known as Nafion, was discovered in the 1960s. As the temperature rises, the polymer becomes unstable and the membranes dehydrate, leading to a loss of performance.

In addition to its temperature and heat limitations, Nafion is also much more expensive to produce than the new membrane, Wiesner said, adding that membranes make up as much as 40 percent of the overall cost of fuel cells.

While I am not a big fan of fuel cells, especially for automotive applications, It is well to keep abreast of technological innovations, such as this one, which may make them more viable.

Comments

[tony]

interesting stuff, we need to know the energy cost of energy saving devices

[tony]

Im amazed more people havnt read this!

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This information needs to be made more easily available...

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I love this word: Low Humidity and Higher Temperatures

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interesting stuff, we need to know the energy cost of energy saving devices

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Glad this was made, especially because of the price and instability of Nafion!

[Car Lease Broker Los Angeles]

I like that they were able to create this, considering what you point out about Nafion becoming unstable.

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I like that they were able to create this, considering what you point out about Nafion becoming unstable.

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Using fuel cells, isn't good, I agree with you on that, but you're right that the technology is being used for the right reasons.

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My father went to Duke! Duke pride. :)

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I didn't realize Duke had such great minds at the School of Engineering. Good to know!

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Is this membrane being used more frequently or instead of Nafion now?

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I like that they were able to create this,

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that allows fuel cells to operate at low humidity and theoretically at higher temperatures.

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fuel cells to operate at low humidity and theoretically at higher temperatures.

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Very nice post there is and very nice innovation to face the energy crisis.