Affiliation:
1. Nanomaterials & System Lab Major of Mechatronics Engineering Faculty of Applied Energy System Jeju National University Jeju 63243 Republic of Korea
2. Nanomaterials & System Lab Major of Mechanical System Engineering College of Engineering Jeju National University Jeju 63243 Republic of Korea
3. Research Institute of New Energy Industry (RINEI) Jeju National University Jeju 63243 Republic of Korea
Abstract
AbstractAn advanced energy autonomous system that simultaneously harnesses and stores energy on the same platform offers exciting opportunities for the near‐future self‐powered miniature electronics. However, achieving optimal synchronization between the power output of an energy harvester and the storage unit or integrating it seamlessly with real‐time microelectronics to build a highly efficient energy autonomous system remains challenging. Herein, a unique bimetallic layered double hydroxide (LDH) based tribo‐positive layer is introduced for a high‐voltage sliding triboelectric nanogenerator (S‐TENG) with an output voltage of ≈1485 V and power output of 250 µW, respectively. To demonstrate the potential of a self‐charging power system, S‐TENG is integrated with on‐chip micro‐supercapacitors (MSCs) as a storage unit. The MSC array effectively self‐charged up to 4.8 V (within 220s), providing ample power to support micro‐sensory systems. In addition, by utilizing the high‐voltage output of the S‐TENG, the efficient operation of electrostatic actuators and digital microfluidic (DMF) systems driven directly by simple mechanical motion is further demonstrated. Overall, this work can provide a solid foundation for the advancement of next‐generation energy‐autonomous systems.
Funder
National Research Foundation of Korea