Si-based Cable-type Anodes For LIB Application And Planar-Integrated All-Solid-State Fiber Super-Capacitors

Along with the discovery of Microcosm, the technology go into a new chapter, and thedevelopment of nanotechnology promote the related science. The nano-materials sciencewhich combines the nanotechnology and material science, have got more and more attention.Popularity of mobile digital products and the Mobile Internet Era and the Electric Car Eramake higher requirements of the energy storage devices. Lithium ion secondary devices andSuper-capacitors have attracted earnest attention. Finding better energy storage materials anddesigning more suitable structure for storage devices are critical to get a breakthrough. Sincethe potential use in weaving devices, wearable digital products and flexible display devices,flexible energy storage devices have become very promising research direction. In thisarticle, we study the Si-based new Cable-type anode and flexible, planar-integrated,all-solid-state fiber super-capacitor, the main contents include the following aspects：(1) The core-shell Si@SiO2nanowires are synthesized on cabon cloth, through chemicalvapor deposition(CVD), and the nanowires wrap around the fibers, forming a new type ofsilicon-based Cable-type anode.(2) The as-fabricated anodes directly are used for Lithium ion battery package and tests.Based on the anodes, the half-cells exhibit a high capacity (2247m Ah g-1, on the currentdensity of800m A/g), good rate capacity and excellent cycle performance (only8%capacity loss in average per100cycles, for the hole1000cycles on the current density of8A/g). The full-cells based on the anodes also show excellent storage performance, and thefull-cells can lighten different colors LED easily, demonstrating the potential practicalperformance.(3) The ZnCo2O4nanowire arrays/Carbon fibers composite electrodes are arranged ininsert-finger type on PET by silver, forming a new flexible, planar-integrated, all-solid-statefiber super-capacitor. This flexible capacitor devices show high efficiency, long cycle lifeand excellent flexibility properties. Moreover, though the study of the electrode number’saffection on the performance of super-capacitor, the enhanced distributed capacitance presentin the super-capacitors of this class structure. The research have an important role inpromoting the design for the energy storage in the future, and it offers a reference for the better design in the structure, size, capacity and more reasonable capacitor.