Sn-Improving Flexible Carbon Electrode from Electrospun Nanofibers for a High-Performance Supercapacitor

Direct construction of the electrodemeets the requirement of quickdevelopment of energy storage technology, especially those support-freeelectrodes consisting of 100% activated materials. Herein, a support-freecarbon electrode is prepared using the electrospinning method andthe following carbonization process, which owns an improved flexibilityof rolling and folding when the ductile Sn component is introducedin the polymer solution of electrospinning. Moreover, the above carbonelectrode is composed of one-dimensional (1D) nanosized carbon fiber(& phi; & SIM; 366 nm). Furthermore, the specific surface areaof the carbon-fiber-based electrode reaches 1423.96 m(2) g(-1) after chemical activation, and thus, this electrodeexhibits excellent electrochemical supercapacitor performance fora single electrode (specific capacitance of 342.05 F g(-1) at the current density of 0.5 A g(-1)) and its symmetricsupercapacitor (energy density of 15.26 Wh kg(-1) atthe power density of 187.5 W kg(-1)).

Automated summary

Direct construction of a support-free carbon electrode, composed of 100% activated materials, was achieved using electrospinning and carbonization. The electrode exhibited improved flexibility due to the introduction of ductile Sn during the electrospinning process. The resulting carbon electrode consisted of one-dimensional nanosized carbon fibers (366 nm) and had a specific surface area of 1423.96 m2 g-1 after chemical activation. The electrode demonstrated excellent electrochemical supercapacitor performance both as a single electrode (specific capacitance of 342.05 F g-1 at 0.5 A g-1) and in a symmetrical supercapacitor configuration (energy density of 15.26 Wh kg-1 at 187.5 W kg-1 power density).