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Fiber‐Based Flexible All‐Solid‐State Asymmetric Supercapacitors for Integrated Photodetecting System
Author(s) -
Wang Xianfu,
Liu Bin,
Liu Rong,
Wang Qiufan,
Hou Xiaojuan,
Chen Di,
Wang Rongming,
Shen Guozhen
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201307581
Subject(s) - supercapacitor , materials science , energy storage , flexibility (engineering) , graphene , electronics , optoelectronics , photodetector , nanotechnology , electrode , electrical engineering , power (physics) , capacitance , engineering , chemistry , physics , statistics , mathematics , quantum mechanics
Integrated nanodevices with the capability of storing energy are widely applicable and have thus been studied extensively. To meet the demand for flexible integrated devices, all‐solid‐state asymmetric supercapacitors that simultaneously realize energy storage and optoelectronic detection were fabricated by growing Co 3 O 4 nanowires on nickel fibers, thus giving the positive electrode, and employing graphene as both the negative electrode and light‐sensitive material. The as‐assembled integrated systems were characterized by an improved energy storage, enhanced power density (at least by 1860 % enhanced) by improving the potential window from 0–0.6 V to 0—1.5 V, excellent photoresponse to white light, and superior flexibility of both the fiber‐based asymmetric supercapacitor and the photodetector. Such flexible integrated devices might be used in smart and self‐powered sensory, wearable, and portable electronics.