Here is an idea, combine the need for energy absorbing foam with that of storage battery for a hybrid or all electric car.
Carbon foam as I recall it, was developed under DARPA as a heat resistant foam for aircraft using composite construction (my facts here may be fuzzy). It has unusual electrical properties, a great conductor and something about static charges being held (and or attracted) which didn't make it the best thing to fly in during a thunderstorm.
Carbon Foam: The Key Ingredient of a Better Battery?
Carbon Foam: The Key Ingredient of a Better Battery? | Michigan Tech News
Quote:
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Their cathode relies on nickel oxyhydroxide, the same material used in rechargeable nickel-cadmium or nickel-metal hydride batteries. “In most batteries that contain nickel oxyhydroxide, metallic nickel serves as a mechanical support and a current collector,” said chemistry professor Bahne Cornilsen, who had been studying nickel electrodes for a number of years, initially with NASA support. A few years ago, the Michigan Tech team had a chance to experiment with something differ
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EDIT: If anyone knows what happened to the real/original
Carbonology company which made T-Foam I'd like to know what happened to them. Looks like another company took their name now.