Battery draws power from salinity difference between freshwater and saltwater.
Stories Tagged "battery"
Startup creates an automated process that could speed the development of cheaper batteries for electric cars.
An alternative to batteries gets an advance from tiny, crumpled sheets of graphene, whose electrodes can store more charge because they have larger surface areas.
Apps that track how people use their phones could help make the devices more efficient.
Virus-based nanowires are the key to making valuable chemicals out of methane, says Siluria.
A battery will capture power from braking trains.
Founder of A123 Systems starts a new company to commercialize the technology.
If federally funded factories don't get enough demand, even more government spending could result.
Development is a step toward making such batteries practical for electric vehicles.
Lithium sulfur promises a longer charge, and safer operation, compared to standard lithium batteries.