24M founders Yet-Ming Chiang and Throop Wilder, outside the Cambridge company's "dry room" for battery production.

The company believes its new battery design will cut the cost of today’s lithium ion batteries in half. That’s a big deal for a product that is embedded in smartphones, laptops, electric vehicles, and used in power back-up systems. “We think it’s the safest lithium ion battery ever made,” says Yet-Ming Chiang, co-founder and chief scientist of Cambridge-based 24M Technologies. More →