Analyses of scanning electrochemical microscopy and electrochemical impedance spectroscopy in direct methanol fuel cells: permeability resistance and proton conductivity of polyaniline modified membrane

被引：19
作者：
Ben Jadi, S. [1 ]
El Guerraf, A. [2 ]
Kiss, A. [3 ]
El Azrak, A. [1 ]
Bazzaoui, E. A. [2 ]
Wang, R. [4 ]
Martins, J., I [5 ]
Bazzaoui, M. [1 ,5 ]
机构：
[1] Univ Ibn Zohr, Lab Mat & Environm, Dept Chim, Fac Sci, BP 8106, Agadir 80000, Morocco
[2] Univ Mohammed Ier, Fac Sci, Dept Chim, Lab Chim Mat, Oujda 60000, Morocco
[3] Univ Pecs, Fac Sci, Dept Gen & Phys Chem, Ifjusag Utja 6, H-7624 Pecs, Hungary
[4] Hiroshima Inst Technol, Fac Engn, Dept Mech Syst Engn, Saeki Ku, 2-1-1 Miyake, Hiroshima 7315193, Japan
[5] Univ Porto, Fac Engn, Dept Engn Quim, Rua Roberto Frias, P-4200465 Porto, Portugal
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2020年 / 24卷 / 07期
关键词：
SECM; Polyaniline; DMFC; Nafion; Methanol crossover; Proton conductivity; POLYPYRROLE/NAFION COMPOSITE MEMBRANES; EXCHANGE MEMBRANES; TRANSPORT-PROPERTIES; NAFION MEMBRANES; CROSSOVER; ELECTROLYTE; DMFC; PERFORMANCE; ACID; OXIDATION;
D O I：
10.1007/s10008-020-04659-2
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Nafion 112/polyaniline (Na/PANi) composite membranes were synthesized by chemical polymerization of aniline on the perfluorinated structure for use in direct methanol fuel cells as a solid electrolyte. The morphology and physicochemical properties of the composite membranes were analyzed by scanning electron microscopy (SEM), attenuation Fourier reflection infrared spectroscopy (FTIR-ATR), and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of the membranes were investigated by scanning electrochemical microscopy (SECM), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). The results show that PANi-modified Nafion during 1 and 24 h decrease the methanol crossover by 78% and 89% and increase the proton conductivity by 17% and 2.6% respectively.
引用
收藏
页码：1551 / 1565
页数：15
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