Hierarchically Structured Three-Dimensional Carbon-Based Integrated Electrodes with Enhanced Pseudocapacitance and Deformability
Bo‐Hao Xiao, Weijie Cai, Pei-Yuan Wu, Xiao Kang, Zhao‐Qing Liu
Abstract
Open AccessRenewablesRESEARCH ARTICLES14 Jan 2023Hierarchically Structured 3D Carbon Based Integrated Electrodes with Enhanced Pseudocapacitance and Deformability Bo-Hao Xiao, Wei-Jie Cai, Pei-Yuan Wu, Kang Xiao and Zhao-Qing Liu Bo-Hao Xiao , Wei-Jie Cai , Pei-Yuan Wu , Kang Xiao and Zhao-Qing Liu https://doi.org/10.31635/renewables.023.202200009 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Compressible supercapacitors are playing an increasingly significant role in flexible sensors and wearable electronic devices. However, the integration of mechanical compressibility and excellent electrochemical performance into a single device remains a challenge. Herein, we demonstrate a compressible and high-performance supercapacitor based on an elastomer N-doped carbon foam with hierarchical carbon nanotubes. Hierarchically structured Fe3[email protected] carbon nanotubes/N-doped carbon foam and [email protected] carbon nanotubes/N-doped carbon foam have been synthesized via a simple and universal self-catalytic strategy. The hierarchical structural features of self-catalytic N-doped carbon nanotubes can serve as a cushion when the composite is subjected to an external force, exhibiting excellent mechanical properties with a maximum compressive strain of 80% and fatigue resistance of 1000 cycles. Moreover, the different electroactive potentials of the transition metal species in the composites afford the assembled device to possess a maximum operating voltage of 1.4 V, which shows a maximum energy density of ∼10.74 Wh kg−1 (0.084 mWh cm−3) at the power density of ∼179.2 W kg−1 (1.4 mWh cm−3), and retains 88.4% of the original capacitance after 20 000 charge-discharge cycles, even at a strain of 80%. This work paves the way for controllable fabrication of compressible electrodes and supercapacitors. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentVolume 0Issue jaPage: 1-27Supporting Information Copyright & Permissions© 2023 Chinese Chemical Society Downloaded 1 times PDF downloadLoading ...