| 초록 |
For future industrial applications for smart window of buildings and electric vehicles, organic material-based black electrochromic (EC) devices are promising technologies. Herein, a dual layer system of black-colored EC polymer (PEB1) and poly(3,3-bis(bromomethyl)-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine)s (PR-Br) was developed to realize a black electrochromic film with a high color contrast. In our system, a porous and ordered polyaniline layer was assembled to graphene flakes (PANI-GF) and applied to the counter electrode material for realizing self-powered device. The optimized black-to-transparent electrochromic capacitive window (BTECCW) showed high color contrast (65%), large energy density (26.9 Wh kg-1) and power density (23.9 kW kg-1). The redox energy of the BTECCW was stored and applied to operate an electronic clock and R-LED. Furthermore, 10 x 10 cm2 size BTECCW was fabricated to confirm scalability of the electrochromic capacitive window. |
