CalBattery has designed a new li-ion battery with a silicon-graphene anode promising a major improvement in battery energy density. The design is based on what the company calls its "GEN3" silicon-graphene composite anode material for li-ion batteries, the technology breakthrough for which was developed at Argonne National Labs. The company entered the li-ion battery cells into the Department of Energy's 2012 Start UP America's Next Top Energy Innovator challenge, and is a finalist in the competition.
Independent test results show that CalBattery's cells have an energy density of 525 watt-hours per kilogram, and anode capacity of 1,250 mili-amp-hours per gram. Compare this to the typical commercial battery out there right now in the 100-180 watt-hours per kg range, and anode capacity in the 325 mili-amp-hours per gram range.
That means 300 percent more energy storage than current batteries, the potential to go 300 percent farther on a charge than current EVs and a huge cost reduction. "This equates to more than a 300 percent improvement in lithium-ion battery capacity, and an estimated 70 percent reduction in lifetime cost for batteries used in consumer electronics, EVs, and grid-scale energy storage," CalBattery CEO Phil Roberts told Torque News.