Fluorographenes for Energy and Sensing Application: The Amount of Fluorine Matters

Abstract

With graphene and its derivatives playing important roles in a wide array of applications lately, modification and optimization of these materials become of paramount importance. In this work, we study the electrochemical and electrocatalytic behaviors of three fluorinated graphenes with varied fluorine contents. Unsurprisingly, the fluorinated graphene materials have displayed enhanced electrochemical sensing in various biomarkers, including uric acid, ascorbic acid, and dopamine, and also in energy applications, such as hydrogen evolution and oxygen reduction over the bare glassy carbon electrode surface. A comparison within the fluorinated graphenes showed that the materials with the higher fluorine level produced the best performance electrochemically and electrocatalytically in general.