The company has invented and patented the protected lithium electrode (PLE™), which enables the use of ultra-light metallic lithium anodes in batteries. This technology has been used to develop both primary and rechargeable batteries, including non-aqueous lithium/sulfur batteries, primary lithium-water, primary and rechargeable lithium-air, and rechargeable aqueous lithium-sulfur batteries. With a team of 18 employees and a well-equipped R&D facility in Berkeley, CA, Polyplus is at the forefront of battery innovation, offering products that provide twice the energy at half the size, improving the usability of mobile devices and other applications.