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首页> 外文期刊>RSC Advances >Fabrication of laminated and coated Nafion 117 membranes for reduced mass transfer in microbial fuel cells
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Fabrication of laminated and coated Nafion 117 membranes for reduced mass transfer in microbial fuel cells

机译：用于减少微生物燃料电池的层压和涂覆的Nafion 117膜的制备

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Sulfonation of polyvinylidinefluoride (PVdF) with chlorosulfonic acid for 2 hours revealed a respective 33% degree of sulfonation (DS) in a SPVdF membrane. The resulting sulfonated PVdF resins were used for Nafion 117 modification as coat and laminating materials, where the modified Nafion 117 membranes (laminated and coated with SPVdF) were used as polymer electrolyte membranes in microbial fuel cells (MFCs). Coating/lamination exhibited reduced oxygen diffusion across membranes by a magnitude of less than two orders over a pristine Nafion 117 membrane. This resulted in higher open circuit voltages (OCVs) with increased coulombic efficiency (CE) in MFCs. With SPVdF coated and laminated Nafion 117 membranes, respective IEC values of 0.57 and 0.46 meq g ~(?1) and proton conductivities of 5.91 × 10 ~(?3) and 5.11 × 10 ~(?3) S cm ~(?1) were observed, indicating maximum power and current densities of 446.45 ± 21 mW m ~(?2) and1721.78 ± 86 mA m ~(?2) and 413.79 ± 20 mW m ~(?2) and1657.57 ± 82 mA m ~(?2) in MFCs using mixed Firmicutes as biocatalysts. The obtained coulombic efficiencies were higher (approx. 1–2%) than those of pristine Nafion 117, indicative of its reduced oxygen diffusion at the anode. In effect, the study enumerates the efficiency of modified Nafion 117 with sulfonated PVdF coated and laminated membranes as a separating barrier in single-chambered MFCs for microbial bio-energy conversion.
机译：聚氰基氟化物（PVDF）与氯磺酸2小时的磺化，在SPVDF膜中显示出相应的33％的磺化度（DS）。所得磺化的PVDF树脂用于Nafion 117改性作为涂层和层压材料，其中改性的Nafion 117膜（层压和涂覆有SPVDF）作为微生物燃料电池（MFC）中的聚合物电解质膜。涂层/层压在膜上表现出降低氧气扩散，在原始Nafion 117膜上的数量小于两个订单。这导致较高的开路电压（OCV），在MFC中具有增加的库仑效率（CE）。使用SPVDF涂覆和层压Nafion 117膜，相应的IEC值为0.57和0.46meq G〜（α1）和质子电导率为5.91×10〜（？3）和5.11×10〜（？3）S cm〜（？1观察到），表明最大功率和电流密度为446.45±21 mw m〜（？2）和1721.78±86 ma m〜（Δ2）和413.79±20 mw m〜（？2）和1657.57±82 ma MFC中的M〜（？2）使用混合件作为生物催化剂。所获得的库仑效率高（约1-2％）比原始Nafion 117更高，指示其在阳极处的降低的氧气扩散。实际上，该研究枚举改性的Nafion 117与磺化PVDF涂覆和层压膜的效率作为单腔MFC中的分离屏障，用于微生物生物能量转化。

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