Graphene Aerogel Modified Carbon Paper as Anode for Lithium‐Ion Batteries

Carbon paper‐supported graphene aerogels are examined as anode electrodes for lithium‐ion batteries, employing a hydrothermal process and a freeze‐drying step. Triethylenetetramine (TETA) and o‐phenylenediamine (OPD) prove to promote graphene aerogel formation and its chemical bonding onto the surface of carbon paper. The electrochemical results demonstrate that the electrode treated with the former diamine has a remarkable rate capability with higher capacities as compared with the electrode treated with the latter diamine and better stability. Diamine proves to be an effective approach for promotion of the chemical bonding between graphene and carbon paper (CP) for application as anode electrode in lithium batteries. A porous 3D structure of graphene aerogel (GA) is formed on the treated surface of carbon paper. Aliphatic triethylenetetramine (TETA) results in a remarkable electrochemical behavior providing strongly connected networks as compared with the aromatic o‐phenylenediamine (OPD).