Characterization of Nafion/Silica Hybrid Composite Membranes for Redox Flow Battery (RFB) Applications

Abstract:

Nafion/Silica hybrid membranes were prepared via in situ solgel method for redox flow battery (RFB) system. In this work, a novel Nafion/organically modified silicate hybrids nanocomposite membrane was prepared via in situ solgel reactions for mixtures of tetraethoxysilane (TEOS) and trimethoxyprohanthiol (TMSP). The primary properties of Nafion/Silica hybrids membrane were measured and compared with Nafion and Nafion/SiO₂ hybrid membranes. Fourier transform infrared spectra (FT-IR) analysis of the hybrids membranes reveal that the silica and organic modified silica phase is well formed within hybrids membrane. The XRD results indicate thatthe Nafionhybrid membranes are not influenced by SiO₂ nanoparticles.Nafion/Silica hybrid membrane shows nearly the same ion exchange capacity (IEC) and slightly greater of proton conductivity as pristine Nafion-117 membrane. The water uptake for Nafion/Organosilica hybrids membrane shows greatly reduced than a pristine Nafion 117, suggesting of low water cross over that is mostly faced in the RFB applications.

• Periodical: Advanced Materials Research (Volume 911)
• Pages: 45-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.911.45
• Online since: March 2014
• Authors: Haryadi Haryadi*, Y.B. Gunawan, S.P. Mursid, D. Haryogi
• Keywords: Nafion, Silica, Sol-Gel

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