Carmakers learned years ago it’s not easy to make a practical hydrogen fuel cell. Yet hydrogen fuel cells do work, and they’re greener than batteries. So how about using a mini hydrogen fuel cell to recharge something small—like your mobile phone battery?
That’s the idea behind SiGNa Chemistry’s PowerTrekk, demo’d at the recent Consumer Electronics Show in Las Vegas. The device is filled with a powdery substance known as sodium silicide that produces hydrogen gas in the presence of water. It has the same recharge power as six AA batteries, minus the heavy metals and toxic chemicals.
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