Electrospinning Achieving Supramolecular Cyclodextrin-Polyaniline Layered Fabric for Expanding Conductive Performance of Flexible Electrode.

Supercapacitor electrode materials are increasingly indispensable for energy storage in wearable and flexible electronics. Herein, the electrospun assembled supramolecular nanofibrous P-PC@CD was fabricated from polyacrylonitrile (PAN), camphorsulfonic acid-doped polyaniline (PANI-CSA), and various cyclodextrins (CDs) and their derivatives. Subsequently, an in situ polymerized polyaniline (PANI) layer was introduced, forming a low-resistance layered electrode P-PC@CD@PANI. Among these, β-CD significantly enhances electrochemical performance, delivering an areal capacitance 353 times higher than that of PAN + PANI mixed fibers prior to polymerization. The P-PC@β-CD@PANI electrode also exhibits excellent flexibility, maintaining 97.0% capacitance after 100 cycles of repeated 180° bending and 94.0% after 1000 cycles. Moreover, after 24 h storage at 75% relative humidity and room temperature, as well as at 37°C, capacitance retention remains at 97.3% and 98.7%, respectively. The device can stably power a light-emitting diode (LED). This work provides a high-performance supramolecular flexible electrode and offers new insights into electrospinning-based supramolecular assembly for electrochemical applications.