Fabrication of laminated and coated Nafion 117 membranes for reduced mass transfer in microbial fuel cells

摘要: Sulfonation of polyvinylidinefluoride (PVdF) with chlorosulfonic acid for 2 hours revealed a respective 33% degree sulfonation (DS) in SPVdF membrane. The resulting sulfonated PVdF resins were used Nafion 117 modification as coat and laminating materials, where the modified membranes (laminated coated SPVdF) polymer electrolyte microbial fuel cells (MFCs). Coating/lamination exhibited reduced oxygen diffusion across by magnitude less than two orders over pristine This resulted higher open circuit voltages (OCVs) increased coulombic efficiency (CE) MFCs. With laminated membranes, IEC values 0.57 0.46 meq g−1 proton conductivities 5.91 × 10−3 5.11 S cm−1 observed, indicating maximum power current densities 446.45 ± 21 mW m−2 & 1721.78 86 mA 413.79 20 1657.57 82 MFCs using mixed Firmicutes biocatalysts. obtained efficiencies (approx. 1–2%) those 117, indicative its at anode. In effect, study enumerates separating barrier single-chambered bio-energy conversion.