Akademik Veri Yönetim Sistemi
JOURNAL OF POWER SOURCES, cilt.667, 2026 (SCI-Expanded, Scopus)
In this study, electrospun poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB) composite membranes containing MXene (Ti3C2Tx) at different concentrations (0.5-5 wt%) are produced, and their performance is evaluated as proton exchange membranes in microbial fuel cells (MFCs). The addition of MXene significantly improves the physicochemical and electrochemical performance of the membranes due to its high electrical conductivity, surface hydrophilicity, and layered structure. The composite membrane containing 3 wt% MXene demonstrates superior proton conductivity (19.5 mS/cm at 80 degrees C), ion exchange capacity (0.87 meq/g), and water retention capacity (101.9 %), exceeding the performance of the pure P34HB membrane by more than three times. The MFC tests reveal an exceptional open-circuit voltage of 795 mV, a maximum power density of 301 mW/m2, a Coulombic efficiency of 18.7 %, and a chemical oxygen demand (COD) removal efficiency of 85 %. The results confirm that the incorporation of MXene effectively enhances proton conduction and electron recovery by reducing internal resistance. To the authors' knowledge, this study is the first to report electrospun MXene-P34HB nanofiber membranes used in MFCs and presents a sustainable and biodegradable alternative for next-generation bioelectrochemical systems.