Porous 3D Few‐Layer Graphene‐like Carbon for Ultrahigh‐Power Supercapacitors with Well‐Defined Structure–Performance Relationship

Abstract

3D few-layer graphene-like carbon with hierarchical open porous architecture is obtained by a new in situ Cu template method, leading to top-level supercapacitive performance, especially state-of-the-art power density. An effective new approach is demonstrated, which can extend the understanding of structure–performance relationships for many electrochemical energy-storage systems and form a significant complement to classical electrochemical impedance spectroscopy. 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.