Proton conducting membranes based on Poly(2,5-benzimidazole) (ABPBI)-Poly(vinylphosphonic acid) blends for fuel cells

被引:78
作者
Acar, Oktay [2 ]
Sen, Unal [2 ]
Bozkurt, Ayhan [1 ]
Ata, Ali [2 ]
机构
[1] Fatih Univ, Dept Chem, TR-34500 Istanbul, Turkey
[2] Gebze Inst Technol, TR-41400 Gebze, Kocaeli, Turkey
关键词
Poly(2,5-benzimidazole); Poly(vinylphosphonic acid); Blend; Proton conductivity; Fuel cell; POLYMER ELECTROLYTE MEMBRANES; PHOSPHORIC-ACID; DOPED POLYBENZIMIDAZOLE; METHACRYLATE; PERFORMANCE; IMIDAZOLE; HYDROGEN; PBI;
D O I
10.1016/j.ijhydene.2009.01.073
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Polymer electrolyte membranes (PEM) were fabricated by blending of Poly(2,5-benzimidazole) (ABPBI) and Poly(vinylphosphonic acid) (PVPA) at several stoichiometric ratios with respect to monomer repeating units. The characterization of the membranes were carried out by using Fourier-transform infrared spectroscopy (FT-IR) for inter-polymer interactions, scanning electron microscope (SEM) for surface morphology as well as homogeneity and thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) for thermal properties. Water uptake measurements were made to investigate the swelling character the blends that was changed with PVPA composition. The spectroscopic measurements and water uptake studies suggested the complexation between ABPBI and PVPA that inhibited dopant exclusion up on swelling in excess water. Proton conductivities of the hydrated and anhydrous samples were measured using impedance spectroscopy. Although the proton conductivity of the blends was lower in the anhydrous state such as 1.8 x 10(-6) S/cm at 150 degrees C for ABPBLPVPA with (1:2), it increased to 0.004 S/cm for ABPBI:PVPA (1:4) at 20 degrees C (RH = 50%). (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:2724 / 2730
页数:7
相关论文
共 29 条
[1]   Polymer electrolyte fuel cells based on phosphoric acid-impregnated poly(2,5-benzimidazole) membranes [J].
Asensio, JA ;
Borró, S ;
Gómez-Romero, P .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (02) :A304-A310
[2]   Recent developments on proton conducting poly(2,5-benzimidazole) (ABPBI) membranes for high temperature polymer electrolyte membrane fuel cells [J].
Asensio, JA ;
Gómez-Romero, P .
FUEL CELLS, 2005, 5 (03) :336-343
[3]   Proton-conducting polymers based on benzimidazoles and sulfonated benzimidazoles [J].
Asensio, JA ;
Borrós, S ;
Gómez-Romero, P .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2002, 40 (21) :3703-3710
[4]   Synthesis, microstructure, and acidity of poly (vinylphosphonic acid) [J].
Bingol, Bahar ;
Meyer, Wolfgang H. ;
Wagner, Manfred ;
Wegner, Gerhard .
MACROMOLECULAR RAPID COMMUNICATIONS, 2006, 27 (20) :1719-1724
[5]   Acid-doped polybenzimidazole as the membrane of electrochemical hydrogen sensors [J].
Bouchet, R ;
Siebert, E ;
Vitter, G .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (05) :L95-L97
[6]   Proton conducting blends of poly(4-vinylimidazole) with phosphoric acid [J].
Bozkurt, A ;
Meyer, WH .
SOLID STATE IONICS, 2001, 138 (3-4) :259-265
[7]   Proton-conducting poly(vinylpyrrolidon)-polyphosphoric acid blends [J].
Bozkurt, A ;
Meyer, WH .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2001, 39 (17) :1987-1994
[8]  
Carrette L, 2000, CHEMPHYSCHEM, V1, P162, DOI 10.1002/1439-7641(20001215)1:4<162::AID-CPHC162>3.0.CO
[9]  
2-Z
[10]   Anhydrous proton-conducting properties of triazole-phosphonic acid copolymers:: a combined study with MAS NMIR [J].
Celik, Sevim Ue ;
Akbey, Uemit ;
Graf, Robert ;
Bozkurt, Ayhan ;
Spiess, Hans W. .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2008, 10 (39) :6058-6066