Polypyrrole-coated paper for flexible solid-state energy storage

• DOI: 10.1039/c2ee23977a
• Publication Date: 2012-12-17T12:32:32Z
• Authors: Longyan Yuan; Bin Yao; Bin Hu; Kaifu Huo; Wen Chen; Jun Zhou
• Keywords: Polypyrrole; Separator (oil production); Power density; In situ polymerization

Highly conductive paper was fabricated through polypyrrole (PPy) coating on common printing by a simple and low-cost “soak polymerization” method. The as-fabricated porous, flexible shows high electrical conductivity of 15 S cm−1 low sheet resistance 4.5 Ω sq−1. Flexible solid-state supercapacitors assembled with PPy/paper composite electrodes had an average weight 55 mg areal capacitance 0.42 F cm−2, indicating energy density 1 mW h cm−3 at power 0.27 W normalized to the volume whole cell (electrode, electrolyte, separator). Furthermore, this method could be easily scaled up large-scale fabrication opened new opportunities for storage.