Li, Hongsen Peng, Lele Zhu, Yue Zhang, Xiaogang Yu, Guihua Achieving High-Energy–High-Power Density in a Flexible Quasi-Solid-State Sodium Ion Capacitor Simultaneous integration of high-energy output with high-power delivery is a major challenge for electrochemical energy storage systems, limiting dual fine attributes on a device. We introduce a quasi-solid-state sodium ion capacitor (NIC) based on a battery type urchin-like Na<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> anode and a capacitor type peanut shell derived carbon cathode, using a sodium ion conducting gel polymer as electrolyte, achieving high-energy-high-power characteristics in solid state. Energy densities can reach 111.2 Wh kg<sup>–1</sup> at power density of 800 W kg<sup>–1</sup>, and 33.2 Wh kg<sup>–1</sup> at power density of 11200 W kg<sup>–1</sup>, which are among the best reported state-of-the-art NICs. The designed device also exhibits long-term cycling stability over 3000 cycles with capacity retention ∼86%. Furthermore, we demonstrate the assembly of a highly flexible quasi-solid-state NIC and it shows no obvious capacity loss under different bending conditions. device;capacitor type peanut shell;battery type urchin-like Na 2 Ti 3 O 7 anode;Wh;quasi-solid-state sodium ion capacitor;Flexible Quasi-Solid-State Sodium Ion Capacitor;electrochemical energy storage systems;power density;capacity;kg 2016-08-08
    https://acs.figshare.com/articles/journal_contribution/Achieving_High-Energy_High-Power_Density_in_a_Flexible_Quasi-Solid-State_Sodium_Ion_Capacitor/3568788
10.1021/acs.nanolett.6b02932.s001