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
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).
引用
收藏
页码:405 / 413
页数:9
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