High electrolyte uptake of MXene integrated membrane separators for Zn-ion batteries

Morphology of PAN/bio-based PU/Ti3C2Tx MXene compositeThe morphology of pristine Ti3C2Tx MXene microsheet was investigated by SEM (Fig. 2). The multi-layer and well-aligned architecture of Ti3C2Tx MXene microsheet can be observed, and the sheet thickness was approximately 1.5–2 µm. With the etching of Al in the MXene production process, the bulky objects became wrinkled, and stacked sheets with minor gap voids were observed between the interconnected sheets. A few-layer stacked agglomeration may result from the restacking of sheets during the drying process.Figure 2SEM images of Ti3C2Tx MXene micro-nano sheet.The pure PAN/bio-based PU electrospun fiber was prepared in advance to find suitable processing conditions before the addition of Ti3C2Tx MXene. Figure 3 shows that the PAN/bio-based PU at a concentration of 8 wt% and electrospinning conditions of 26.5 kV applied voltage…

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