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Bulletin of Materials Science

, Volume 36, Issue 4, pp 563–573 | Cite as

Sulfonated carbon black-based composite membranes for fuel cell applications

  • HACER DOǦAN
  • EMEL YILDIZ
  • METIN KAYA
  • TÜLAY Y INANEmail author
Article

Abstract

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 \(\boldsymbol{<}\)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.

Keywords

Fuel cell sulfonated carbon black SPEEK proton conductive membranes 

Notes

Acknowledgements

Turk Demirdokum Fabrikaları A.Ş. is acknowledged for their financial support. The authors thank Dr Elif Ünveren, Handan Karakale, Nevin Bekir, Zekayi Korlu and Mustafa Candemir for valuable technical assistance in the laboratory experiments. Operation of SEM was possible with the help of Orhan İpek and Cem Berk.

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Copyright information

© Indian Academy of Sciences 2013

Authors and Affiliations

  • HACER DOǦAN
    • 1
  • EMEL YILDIZ
    • 1
  • METIN KAYA
    • 2
  • TÜLAY Y INAN
    • 1
    Email author
  1. 1.TUBITAK, Marmara Research CentreChemistry InstituteGebze-KocaeliTurkey
  2. 2.Türk Demirdöküm Fabrikalari A.Ş.Bozüyų̈k’/ḂilecikTurkey

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