Fabrication and Electrochemical Behavior Investigation of a Pt-Loaded Reduced Graphene Oxide Composite (Pt@rGO) as a High-Performance Cathode for Dye-Sensitized Solar Cells

Table 1

Kinetic parameters of the oxidation/reduction of ferrocene on Pt/FTO, Pt@rGO/FTO, and rGO/FTO electrodes determined from different electrochemical techniques.

Kinetic parameters	Electrodes
	Pt/FTO	Pt@rGO1/FTO	rGO/FTO
(mV)	343^a	324^a	325^a
	341^c	326^c	328^c
	340^d	326^d	328^d
(mV)	198^a	181^a	173^a
	119^c	109^c	100^c
	1.04^a	1.06^a	1.09^a
	1.05^c	1.04^c	1.13^c
(cm/s) 10^3	3.18^d	3.33^d	2.78^d
	0.474^d	0.471^d	0.453^d
	1.16	1.01	0.71
(cm^2·s) 10^5	4.19^b	4.19^b	5.61^b
	4.16^d	4.17^d	5.40^d

The values determined from ^aCV, ^bconvolution, ^cdeconvolution, and ^dfitting techniques.