Flexible, thin, and lightweight supercapacitors are essential power sources for portable and wearable electronics. However, their areal and volumetric performances often lag behind their gravimetric performance. This paper presents a solution with a large-area, thin, and flexible 3D polyaniline nanoweb film, designed to enhance these key metrics. The 3D nanoweb structure offers extensive ion-accessible active sites, short ion diffusion distances, and superior mechanical tolerance during electrochemical reactions. These electrodes achieve a high areal capacitance of 303 mF/cm² at 10 mV/s and retain 73% of their capacitance even at a high scan rate of 1000 mV/s. They also exhibit long-term cycle stability, maintaining 98.9% of their capacitance over 10,000 cycles. The all-solid-state flexible supercapacitors deliver impressive area-specific and volume-specific energy densities of 12.7 μWh/cm² and 1.0 Wh/L, respectively.-Scientific Journal cover design by scapiens
[Scientific Journal cover design] Low-Thermal-Budget Fluorite-Structure Ferroelectrics for Future Electronic Device Applications
In article number 2100028, Jiyoung Kim, Si Joon Kim, and their team review key factors involved in developing fluorite-structure ferroelectrics
