Sulfonated carbon black-based composite membranes for fuel cell applications

Bulletin of materials science

Emel Yildiz¹  Metin Kaya²  Tülay Y Inan¹  Hacer Doǧan¹ 

[1] TUBITAK, Marmara Research Centre, Chemistry Institute, 41470 Gebze-Kocaeli, Turkey$$TUBITAK, Marmara Research Centre, Chemistry Institute, 41470 Gebze-Kocaeli, TurkeyTUBITAK, Marmara Research Centre, Chemistry Institute, 41470 Gebze-Kocaeli, Turkey$$;Türk Demirdöküm Fabrikalari A.Åž., 4 Eylül Mah. Ä°smet Ä°nönü, Cad. No: 245, Bozüyk’/Ḃilecik, Turkey$$Türk Demirdöküm Fabrikalari A.Åž., 4 Eylül Mah. Ä°smet Ä°nönü, Cad. No: 245, Bozüyk’/Ḃilecik, TurkeyTürk Demirdöküm Fabrikalari A.Åž., 4 Eylül Mah. Ä°smet Ä°nönü, Cad. No: 245, Bozüyk’/Ḃilecik, Turkey$$

关键词: Fuel cell;    sulfonated carbon black;    SPEEK;    proton conductive membranes.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Two different commercial grade carbon black samples, Cabot Regal 400R (C1) and Cabot Mogul L (C2), were sulfonated with diazonium salt of sulfanilic acid. The resultant sulfonated carbon black samples (S�?�C) were characterized by Fourier transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA). Composite membranes were then prepared using S�?�C as fillers and sulfonated poly(ether ether ketone) (SPEEK) as polymer matrix with three different sulfonation degrees (DS = 60, 70 and 82%). Structure and properties of the composite membranes were characterized by FTIR, TGA, scanning electron microscopy, proton conduction, water uptake, ion exchange capacity and chemical stability. Incorporation of S�?�C particles above 0.25 wt% caused decrease in chemical stability. Pristine and composite membranes prepared from SPEEK82 decomposed completely in <1 h, which is undesirable for fuel cell applications. SPEEK60 membrane having wt% of 0.25�??0.5 with S�?�C particles led to higher proton conductivity than that of pristine membrane. No positive effect was observed on the properties of the composite membranes with the addition of S�?�C particles at high concentrations due to the agglomeration problems and decrease in the content of conductive polymer matrix.

【 授权许可】

Unknown