Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO²⁺/VO₂⁺ Reaction by Freeze-Drying and Pyrolysis Method

Table 4

Electrochemical parameters for samples studied obtained from CVs.

Electrode	Reduction peak current density, Ic (A)	Oxidation peak current density, Ia (A)	Ic/Ia	ΔEsep (V)
Pristine GF	−0.07	0.14	0.50	0.56
Air-heated GF	−0.10	0.13	0.77	0.53
N-rGO-500/GF	−0.06	0.09	0.67	0.55
N-rGO-700/GF	−0.10	0.12	0.83	0.47
N-rGO-900/GF	−0.12	0.15	0.80	0.34