This fuel cell generates electricity by producing hydrogen on the spot. This is achieved through a chemical reaction between calcium hydride sheets and water. From a sheet with volume of less than 3 cc, this fuel cell can generate 5 Whr of electricity. It can be used for many purposes, from charging a smartphone, to providing back-up power in emergencies.
“This single sheet can fully charge an iPhone once. The sheet weighs about 3 g. If these sheets are laminated and sealed, they last for twenty years. Lithium ion batteries lose their charging ability in 4-5 years at most, so they’re not good for emergencies. Because this sheet is a chemical product, it doesn’t change as long as the sealing is intact.