The startup recently raised $4.5 million in its first round of venture funding. It is working with A123 Venture Technologies, part of the battery maker A123 Systems, to scale up the technology and bring it to market.
SolidEnergy replaces the graphite electrode used in conventional lithium-ion batteries with a high-energy lithium-metal one. That’s been tried before, but the metal tends to cause short circuits and fires. So the company has also developed improved electrolytes to make them safer. It plans to sell materials to battery manufacturers, rather than making batteries itself.