Fe-induced layer exchange of multilayer graphene for rechargeable battery anodes

Abstract

Multilayer graphene (MLG) is a promising material for anodes of next-generation thin-film rechargeable batteries. The inverted layer exchange using an Fe catalyst allowed for the low-Temperature (600 °C) self-organization of the anode electrode structure, that is, an active material (MLG) on a current collector (Fe). A coin-Type cell, fabricated from the MLG electrode and pure Li metal foil, showed distinct peaks, indicating Li intercalation into the MLG in a cyclic voltammogram. After 100 charge/discharge cycles, the capacity was 3.3 μAh cm-2 and coulombic efficiency was 98%. The low-Temperature synthesis of a MLG anode structure and its operation were demonstrated.