I am getting slope values in CH Instrument software. Please, help me to calculate the surface area using cottrell equation.
Cottrell Equation for the potential-step experiment, iti is a chronoamperometric method, The current for a electrochemical active reaction of a redox that diffuse to a electrode surface is described by the Cottrell equation: i(t) = (nFAD1/2C)/(Pi1/2t1/2), you might use to determination of electrochemical active surface area. where is the diffusion coefficient D( /s), is the concentration in bulk solution C(mM), A is the surface area of the electrode (m2 ), F is Faraday’s constant, t is the time (s), and n is the number of electrons transferred.
sir i am did chronocoloumetric technique sir
is it possible to calculate surface area of the modified electrode
i am getting the slope value from CH INSTRUMENT SOFTWARE
may i use the slope value to calculate surface area of the modified electrode
Yes, If you perform experiement using chronocoloumetric technique.
You are possible to calculate surface area of the modified electrodeusing chronocoloumetric technique with good controlled potential.
You also can use Cottrell Equation for a good potential-step experiment to determination of electrochemical active surface area.
and i am very confused between Anson plot and cottrell equation
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