Cable-Type Supercapacitors of Three-Dimensional Cotton Thread Based Multi-Grade Nanostructures for Wearable Energy Storage (pages 4925–4931)
Nishuang Liu, Wenzhen Ma, Jiayou Tao, Xianghui Zhang, Jun Su, Luying Li, Congxing Yang, Yihua Gao, Dmitri Golberg and Yoshio Bando
Version of Record online: 29 JUL 2013 | DOI: 10.1002/adma.201301311
A novel cable-type flexible supercapacitor with excellent performance is fabricated using 3D polypyrrole(PPy)-MnO2-CNT-cotton thread multi-grade nanostructure-based electrodes. The multiple supercapacitors with a high areal capacitance 1.49 F cm−2 at a scan rate of 1 mV s−1 connected in series and in parallel can successfully drive a LED segment display. Such an excellent performance is attributed to the cumulative effect of conducting single-walled carbon nanotubes on cotton thread, active mesoporous flower-like MnO2 nanoplates, and PPy conductive wrapping layer improving the conductivity, and acting as pseudocapacitance material simultaneously.