Graphene foam as a stable anode material in lithium‐ion batteries

Graphene foam (GF) as anode material is attracting attention due to the mass-scale production and highly conductive porous three-dimensional (3D) morphology of 2D-graphene. The stable performance of lithium-ion battery (LiBs) based on GF-anode material is one of the challenges to achieve. Herein, the GF is synthesized with the help of chemical vapor deposition (CVD) method and used as anode material in coin-cell LiB. A total 250-charge and discharge cycles of LiB at 0.1 C are observed, and the highest specific capacity ~450 mAh g−1 was detected. The stable performance of LiB is observed from 100th to 250th cycle with a small capacity fading. The rate performance (0.1 C, 1 C, 2 C, 3 C, 4 C each for 10 cycles, and 0.1 C for 100 cycles) indicates a stable performance of LiB. Technologically, stable performance of LiBs is important, and present study can be used as proof of concept for future stable GF-based practical LiBs.