title: Highly flexible and all-solid-state paperlike polymer supercapacitors.
abstract: In recent years, much effort have been dedicated to achieve thin, lightweight and even flexible energy-storage devices for wearable electronics. Here we demonstrate a novel kind of ultrathin all-solid-state supercapacitor configuration with an extremely simple process using two slightly separated polyaniline-based electrodes well solidified in the H(2)SO(4)-polyvinyl alcohol gel electrolyte. The thickness of the entire device is much comparable to that of a piece of commercial standard A4 print paper. Under its highly flexible (twisting) state, the integrate device shows a high specific capacitance of 350 F/g for the electrode materials, well cycle stability after 1000 cycles and a leakage current of as small as 17.2 μA. Furthermore, due to its polymer-based component structure, it has a specific capacitance of as high as 31.4 F/g for the entire device, which is more than 6 times that of current high-level commercial supercapacitor products. These highly flexible and all-solid-state paperlike polymer supercapacitors may bring new design opportunities of device configuration for energy-storage devices in the future wearable electronic area.
authors.affiliation: Tsinghua-Foxconn Nanotechnology Research Center and Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Chuizhou
authors.initials: C
authors.lastname: Meng
authors.forename: Changhong
authors.initials: C
authors.lastname: Liu
authors.forename: Luzhuo
authors.initials: L
authors.lastname: Chen
authors.forename: Chunhua
authors.initials: C
authors.lastname: Hu
authors.forename: Shoushan
authors.initials: S
authors.lastname: Fan