期刊
ACS ENERGY LETTERS
卷 -, 期 -, 页码 963-971出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.2c02505
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This work presents the development of a 3D printed woven carbon fiber and thermoset polyester resin based structural supercapacitor. The addition of hydrothermally synthesized N-doped Zn-Co selenide nanowires on the surface increased the specific surface area and capacitance of the electrodes. The supercapacitor with N@ZnCoSe2-MXene showed impressive energy, power density, and Coulombic efficiency, as well as satisfactory cyclic stability and mechanical robustness. It also exhibited comparable performance under different weather conditions.
This work describes the development of a woven carbon fiber and thermoset polyester resin based structural supercapacitor via three-dimensional (3D) printing. The specific surface area and capacitance of the electrodes were increased by hydrothermally synthesized N-doped Zn-Co selenide nanowires on the surface. The supercapacitor with N@ZnCoSe2-MXene exhibited an energy of 2.69 Wh kg-1, a power density of 43.20 W kg-1, and a Coulombic efficiency of 88.8% at 1000 mA g-1 of current density. The cyclic stability and multifunctionality of the device were satisfactory, and the capacitance retention was 83.7% at the same current density after 6000 consecutive charge-discharge cycles. The device's high tensile strength (637.679 MPa) and modulus (36.92 GPa), with an impact energy absorption capacity of 2.22 J g-1, indicated its mechanical robustness. The device exhibits a comparable performance under various weather conditions. It retains 39.11 F g-1 of specific capacitance, 4.62 Wh kg-1 of energy, and 67.29 W kg-1 of power density at 70 degrees C, while it retains 7.87 F g-1 of specific capacitance, 1.78 Wh kg-1 of energy, and 20.98 W kg-1 of power density at -5 degrees C.
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