Abstract
AbstractOver the past decade, there is gradual development in fully stretchable semiconductors. However, to bring these devices to market, they require a reliable built‐in power source that can maintain stable output voltage, charge/discharge capabilities, and cycle life. Unfortunately, complex cell configurations have hindered the development of stretchable batteries. To overcome this, a fully stretch‐rechargeable battery with a sandwich configuration is fabricated. The cathode layer comprises electrically conductive poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and a redox‐active TEMPO‐substituted polymer, while the anode consists of a carbon nanotube layer deposited with zinc metal. By sandwiching a hydrogel between these two layers, a rechargeable battery is created that is attachable to human skin and <40 µm thick. This thin device offers a promising voltage of 1.8 V and is robust against repeated stretching, liquid leakage, and self‐discharging reactions induced by oxygen. This study is expected to open up new horizons for e‐skin and stretchable electronic fields.
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