High‐Performance Dielectric Elastomer Nanogenerator for Efficient Energy Harvesting and Sensing via Alternative Current Method (Adv. Sci. 18/2022)

High‐Performance Dielectric Elastomer Nanogenerators In article number 2201098 by Shiju E, Kang Liu, Zhong Lin Wang, and co‐workers, a freestanding stretchable generator (100 μm thick) with high output performance is reported. To get rid of the limit of external power supplies, the authors use the electret electrostatic voltage source (EEVS), the pump circuit, and dielectric elastomer capacitor to construct a dielectric elastomer generator based on alternative current method (AC‐DEG). The AC‐DEG shows high charge density and high energy density and can reaches the same output performance as the traditional DEG with external power supply of several kilovoltages. [Image: see text]