Here, considering the interesting features of CCE, such as
renewable surface, high conductivity, stability, porosity, wide
operational potential window, and good mechanical properties
[19], it was used as a substrate for deposition of cobalt hydroxide
nanoparticles. In continuation, its electrocatalytic activity toward
the oxidation of insulinwas investigated by several electrochemical
techniques. The distinguished electrocatalytic feature of the
modified electrodewas used in the development of a flow injection
method for determination of insulin.