Maxell has just unveiled a portable fuel cell that uses water and aluminum to generate electricty. Measuring 6″ x 4″ x 2.5″, this device produces 10W of power (average) and powers a laptop for 4 – 5 hours with 20g of aluminum.
The device is described as a type of proton-exchange membrane fuel cell that generates power by combining hydrogen with oxygen in the air. Separate cartridges contain aluminum and water, and hydrogen is generated as water is gradually added to the aluminum.
[via PinkTentacle]