Introducing Rolled‐Up Nanotechnology for Advanced Energy Storage Devices

Energy storage devices, acting as complementing units for renewable energy sources, play a key role in modern society, and they serve as the dominant power supply for most portable electronics. At the heart of the development of next‐generation energy storage devices lies the exploration of intrinsic material properties, architectural design and fabrication methods. Rolled‐up nanotechnology, a unique method to self‐assemble nanomembranes into 3D structures using strain engineering, has advanced the development of energy storage devices with superior performance. In this review, the recent progress of employing rolled‐up nanotechnology is focused to design rational electrodes for Li‐ion (LIBs) and Li‐O 2 batteries. A comprehensive summary of the fabrication and application of diverse rolled‐up structures in these electrochemical energy storage devices is provided. Apart from this, the great potential of this approach is also highlighted for scalable miniaturized microdevice fabrication, including micro‐LIBs, microsupercapacitors, and microscale ultracompact capacitors. These devices offer a promising platform not only for electrochemical microprobes, but also for lab‐on‐a‐chip applications. Finally, prospects and challenges of employing rolled‐up nanotechnology for future research and development in the broad field of energy storage systems are discussed.