| 초록 |
A bendable and scalable solid supercapacitor with high capacitance was fabricated based on dual-functional role of an amphiphilic graft copolymer, poly(vinyl chloride)-graft-poly(oxyethylene methacrylate) (PVC-g-POEM). Organized mesoporous TiN (om-TiN) films were synthesized by the PVC-g-POEM template and preformed TiO2 nanoparticles through calcination under NH3 condition. Due to large surface area, high porosity, and well-interconnected structure, the capacitance of the solid supercapacitor with om-TiN was improved up to 128.5 F g-1. Also, the incorporation of a small quantity (2 wt%) of carbon nanotubes further increased the high conductivity and surface area, enhancing the capacitance (213.6 F g-1). Moreover, the large scale (15 x 15 cm) of solid supercapacitor with good bendability was successfully fabricated. The PVC-g-POEM graft copolymer with high mechanical strength and high flexibility also served as a solid electrolyte for solid supercapacitor, and it showed better performance (266.8 F g-1) compared to solid supercapacitor with a conventional electrolyte. |
