There are two developing technologies here. Silicon Graphene and just Graphene with standard lipo anode.

True SiGraphene will be smaller and more compact yet deliver the same energy as a standard lipo. There is a medium amount of marketing however Tesla obviously has been pushing this technology. These batteries use a technology that references the chemical composition and cathode/anode material.
https://www.rctech.net/forum/radio-e...rmal-lipo.html