fig1
Figure 1. (A) Schematic diagram of the preparation of porous BT/Ecoflex/rGO-Fe composite film and Ecoflex composite sponge. (B) Schematic diagram and model of the TENG based on composite materials. (C) The size effect and multi-element design for the same total contact area. (D) Schematic illustration of large-area energy harvesting applications using a multi-element TENG mat array.
