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How Fuel-Cell Membranes Are Made

A new process increases the energy output of methanol fuel cells by 50 percent.

By Kristina Grifantini

The process begins with a specially treated silicon disc, which a researcher attaches to a rotating stand in a fume hood. An automated sprayer system emits fine mists of two different polymers and a water solution in a sequence repeated several hundred times in a few hours.

Photo Credit: Porter Gifford

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