Thin, Flexible Secondary Li-Ion Paper Batteries

摘要: There is a strong interest in thin, flexible energy storage devices to meet modern society needs for applications such as interactive packaging, radio frequency sensing, and consumer products. In this article, we report new structure of Li-ion batteries using paper separators free-standing carbon nanotube thin films both current collectors. The collectors battery materials are integrated onto single sheet through lamination process. functions mechanical substrate separator membrane with lower impedance than commercial separators. CNT film collector the anode cathode low resistance (∼5 Ohm/sq), lightweight (∼0.2 mg/cm2), excellent flexibility. After rechargeable battery, despite being (∼300 μm), exhibits robust flexibility (capable bending down <6 mm) high density (108 mWh/g).