Graphene with Covalently Grafted Amino Acid as a Route Toward Eco-Friendly and Sustainable Supercapacitors.

ABSTRACT: Eco-friendly, electrochemically active electrode materials based on covalent graphene derivatives offer enormous potential for energy storage applications. However, covalent grafting of functional groups onto the graphene surface is challenging due to its low reactivity. Here, fluorographene chemistry was employed to graft an arginine moiety via its guanidine group homogeneously on both sides of graphene. By tuning the reaction conditions and adding a non-toxic pore-forming agent, an optimum degree of functionalization and hierarchical porosity was achieved in the material. This tripled the specific surface area and yielded a high capacitance value of approximately 390 F g^-1 at a current density of 0.25 A g^-1 . The applicability of the electrode material was investiga

SUBMITTER: Vermisoglou EC 

PROVIDER: S-EPMC8518929 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature