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High‐performance textile electrode enhanced by surface modifications of fiberglass cloth with polypyrrole tentacles for flexible supercapacitors
Author(s) -
Liu Qifan,
Qiu Jianhui,
Yang Chao,
Zang Limin,
Zhang Guohong,
Sakai Eiichi
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5558
Subject(s) - supercapacitor , polypyrrole , capacitance , materials science , energy storage , nanotechnology , electrode , textile , power density , polymerization , optoelectronics , power (physics) , composite material , polymer , chemistry , physics , quantum mechanics
Summary Textile‐based flexible supercapacitors have various desirable advantages in practical applications due to their excellent flexibility, ease of large‐scale production, and low cost. In this study, a flexible supercapacitor was designed and fabricated using a two‐step polymerization method based on fiberglass cloth and unique morphology of polypyrrole (PPy). In this extraordinary nanostructure, not only do PPy tentacles provide high‐speed channels for the transfer of electron and ion, but they also create a larger specific surface area, thus enhancing the energy storage. The fabricated PPy/CFC supercapacitor possesses an excellent area‐specific capacitance of 549.6 mF cm −2 and a remarkable energy density of 48.85 μWh cm −2 . Besides, it achieves the high capacitance retention of 92.4% after 10 000 charge and discharge cycles and 96.08% after 1000 bending cycles. Furthermore, it is demonstrated that the PPy/CFC supercapacitor is capable of ensuring a stable power supply for practical applications by driving an LCD electronic watch. The fiberglass cloth‐based supercapacitors with PPy tentacles provide a new approach to the practical applications of wearable power supplies.