T. Paronyan
HeXalayer, Kentucky, United States
Keywords: Rotated graphene, Li-ion battery, high capacity
Besides high popularity of current LIB technology it faces the challenge of battery weight, sufficient energy density and safety. The lack of high energy density is triggered from low-capacity (372 mAh/g) nature of the graphitic anode due to limited intercalation of lithium inside of graphene layers. The nature of Van der Waals interaction of graphene layers in AB or ABC stacking prohibits an efficient lithium insertion into interlayer spaces. HeXalayer develops and scales up a novel class of layered graphene technology that contains closely packed 5-30°rotated layers assembled in 3D form. The rotation nature of this graphene weakens the van der Waals interaction forces so that sufficiently increases amount of lithium intercalation into layered structure. This graphene demonstrates exceptionally high capacity in LiBs cells reaching up over 2,200 mAh/g reversible capacity. The uniquely constructed structure of rotated graphene layers provides a large amount of reversible Lithium diffusion in long term cycling, generates a higher nominal Voltage, and stable kinetics for long-term efficient charge/discharge. Hexalayer presents the structural features and uniqueness of RMLG as an advanced anode material, additive and high conductive light material for next generation battery market.