Investigation of N2-fixation on polyaniline electrodes in methanol by electrochemical impedance spectroscopy |
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| Authors: | Fatih Köleli Derya Röpke Rezzan Aydin Thorsten Röpke |
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| Affiliation: | 1.Department of Chemistry,Mersin University,Mersin,Turkey;2.Hydrogen Institute of Applied Technologies gGmbH (HIAT),Schwerin,Germany |
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| Abstract: | The ac response of polyaniline thin films on platinum electrodes was measured at different dc potentials during the N2-fixation in methanol + LiClO4 electrolyte with 0.03 mol L−1 H2SO4 for the first time. The optimum film thickness was found to be 1.5 μm, N2-pressure 50 bar and an optimum electrolysis potential of −0.12 V (NHE). The diffusion coefficients for N2 into the polymer film was found to be (5 ± 2)×10−9 cm2 s−1. |
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