Fabrication of High‐Power Li‐Ion Hybrid Supercapacitors by Enhancing the Exterior Surface Charge Storage

High-power Li-ion hybrid supercapacitors are fabricated with a sophisticated design in which both electrodes are based on ultrafine 3D structures. With a maximum exposure of the exterior surface to facilitate fast interfacial reaction and remedy kinetic imbalance, the hybrid devices demonstrate high energy–power integration and form a perfect bridge for the energy storage gap among the currently available technologies. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.