• 文献标题:   Cellulose-coupled graphene/polypyrrole composite electrodes containing conducting networks built by carbon fibers as wearable supercapacitors with excellent foldability and tailorability
  • 文献类型:   Article
  • 作  者:   LYU SY, CHANG HJ, FU F, HU L, HUANG JD, WANG SQ
  • 作者关键词:   cellulose, carbon fiber, foldable supercapacitor, tailorable supercapacitor, graphene, polypyrrole
  • 出版物名称:   JOURNAL OF POWER SOURCES
  • ISSN:   0378-7753 EI 1873-2755
  • 通讯作者地址:   Chinese Acad Forestry
  • 被引频次:   37
  • DOI:   10.1016/j.jpowsour.2016.07.091
  • 出版年:   2016

▎ 摘  要

A paper-based wearable supercapacitor with excellent foldability and tailorability is fabricated from a chopped carbon fiber (CCF)-reinforced cellulose paper electrode material by coating with reduced graphene oxide (RGO) and polypyrrole (PPy) via in situ polymerization. The CCFs not only form an interpenetrating conducting network that acts as highly conductive electron transfer highways for the RGO/PPy layer in the paper electrode, but also endow the resulting electrode with an excellent areal capacitance of 363 mF cm(-2) and a volumetric energy density of 0.28 mW h cm(-3). Further, the CCFs give the electrode remarkable mechanical robustness, guaranteeing foldability and tailorability, with only slight loss of capacitance after repeated folding 600 times. Even after being subjected to severe cut-in fracture, the capacitance retention is up to 84%, indicating outstanding damage tolerance. The present study reveals a promising candidate for flexible wearable energy storage devices that are required to function in harsh environments. (C) 2016 Elsevier B.V. All rights reserved.