SiNode Systems is developing new cell phone battery technology that is cheaper and lasts longer than the current lithium ion batteries. How does it work? A composite of silicon nano-particles and graphene – silicon anodes don’t last very long, but when layered with graphene, they are protected. The technology is flexible, conductive (eliminating the need for charging cables), and holds a strong charge (nearly ten times that of current graphite-anode cell phone batteries). It also recharges over five times faster.