Investigation of N2-fixation on polyaniline electrodes in methanol by electrochemical impedance spectroscopy

被引：15
|
作者：
Koleli, Fatih [1 ]
Ropke, Derya [1 ]
Aydin, Rezzan [1 ]
Roepke, Thorsten [2 ]
机构：
[1] Mersin Univ, Dept Chem, TR-33342 Mersin, Turkey
[2] Hydrogen Inst Appl Technol gGmbH, D-19061 Schwerin, Germany
来源：
JOURNAL OF APPLIED ELECTROCHEMISTRY | 2011年 / 41卷 / 04期
基金：
新加坡国家研究基金会;
关键词：
Polyaniline; N-2-fixation; Had formation; Electrochemistry; Electrochemical impedance spectroscopy (EIS); HYDROGEN EVOLUTION; NITROGEN-FIXATION; METAL-COMPLEXES; FILMS; REDUCTION; POLYMER; DINITROGEN; CAPACITANCE; PRESSURE; CLEAVAGE;
D O I：
10.1007/s10800-010-0250-3
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The ac response of polyaniline thin films on platinum electrodes was measured at different dc potentials during the N-2-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 mu m, N-2-pressure 50 bar and an optimum electrolysis potential of -0.12 V (NHE). The diffusion coefficients for N-2 into the polymer film was found to be (5 +/- A 2)x10(-9) cm(2) s(-1).
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页码：405 / 413
页数：9
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