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Flexible, Rechargeable, Lithium-free, Supercapacitor-Battery Hybrid Energy Storage Device

A lithium-free, mechanically flexible device that can act as a supercapacitor, as a battery, or as a combination of the two


The development of rechargeable energy storage systems that have both high energy and power densities, as well as long cycling life, is of great importance as these devices would have widespread use in a number of important applications, including electric vehicles, smart electrical grids, miniaturized electronic/optoelectronic devices, wearables, etc.

As such, the development of rechargeable supercapacitor-battery hybrid devices (which have two different charge storage mechanisms – electrical double layer and faradaic reaction) has attracted enormous attention as these devices have the potential to combine the advantages of both supercapacitors and batteries while addressing many of their limitations.

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