Fiber‐Based Flexible All‐Solid‐State Asymmetric Supercapacitors for Integrated Photodetecting System |
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| Authors: | Xianfu Wang Bin Liu Rong Liu Qiufan Wang Xiaojuan Hou Prof Di Chen Prof Rongming Wang Prof Guozhen Shen |
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| Affiliation: | 1. Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan, 430074 (China);2. State Key Laboratory for Superlattices and Microstructures, Institution of Semiconductors, Chinese Academy of Science, Beijing, 100083 (China);3. Key Laboratory of Micro‐nano Measurement‐Manipulation and Physics (Ministry of Education), Department of Physics, Beijing University of Aeronautics and Astronautics, Beijing 100191 (China) |
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| Abstract: | 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 Co3O4 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. |
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| Keywords: | flexibility integrated photodetector nanofibers nanotechnology supercapacitors |
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