Comparison of the performance of reduced graphene oxide and multiwalled carbon nanotubes based sulfonated polysulfone membranes for electrolysis application

Authors

  • Swaminathan Seetharaman,

    1. Patterning and Fabrication Group, Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore, Singapore
    2. Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai, Tamil Nadu, India
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  • Subash Chandrabose Raghu,

    1. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, Singapore
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  • Manickam Velan,

    1. Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai, Tamil Nadu, India
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  • Krishnan Ramya,

    1. Centre for Fuel Cell Technology, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Chennai, Tamil Nadu, India
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  • Kambiz Ansari Mahabadi

    Corresponding author
    1. Patterning and Fabrication Group, Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore, Singapore
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Abstract

A series of nanocomposites containing reduced graphene oxide (GO) versus multiwalled carbon nanotubes (MWCNTs) as filler contents anchored with sulfonated polysulfone (SPSF) polymer matrix have been successfully prepared by sol–gel technique with up to 0.5 wt%. The influence of reduced GO compared to MWCNTs to enhance conductivity of nanocomposite SPSF membranes for higher efficient water electrolysis applications has been studied. The nanocomposite membranes were characterized using scanning electron microscopy, atomic force microscopy, Raman spectroscopy, transmission electron microscopy, optical microscopy, electrical conductivity, and tensile testing. The membrane porous structure, porosity, and pores uniformity plus the uniformity of dispersion of mixture are investigated. The conductivity of the composite membranes for water electrolysis applications has been characterized using localized probes across the surface. The results show SPSF–GO nanocomposite membranes offer higher conductivity and improved performance than those of SPSF–MCNT. A uniform constant and high current density of 1.39 A/cm2 has been achieved in SPSF–GO membrane at 60°C. POLYM. COMPOS. 36:475–481, 2015. © 2014 Society of Plastics Engineers

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