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http://hdl.handle.net/10397/87490
Title: | Direct detection of charge and discharge process in supercapacitor by fiber-optic LSPR sensors | Authors: | Qian, S Chen, X Jiang, S Pan, Q Gao, Y Wang, L Peng, W Liang, S Zhu, J Liu, S |
Issue Date: | 2020 | Source: | Nanophotonics, 2020, v. 9, no. 5, p. 1071–1079 | Abstract: | Supercapacitors with high power density, ultralong lifespan and wide range operating temperature have drawn significant attention in recent years. However, monitoring the state of charge in supercapacitors in a cost-effective and flexible way is still challenging. Techniques such as transmission electron microscopy and X-ray diffraction can analyze the characteristics of supercapacitor well. But with large size and high price, they are not suitable for daily monitoring of the supercapacitors' operation. In this paper, a low cost and easily fabricated fiber-optic localized surface plasmon resonance (LSPR) probe is proposed to monitor the state of charge of the electrode in a supercapacitor. The Au nanoparticles were loading on the fiber core as LSPR sensing region. In order to implant the fiber in the supercapacitor, a reflective type of fiber sensor was used. The results show that this tiny fiber-optic LSPR sensor can provide online monitoring of the state of charge during the charging and discharging process in situ. The intensity shift in LSPR sensor has a good linear relationship with the state of charge calculated by standard galvanostatic charging and discharging test. In addition, this LSPR sensor is insensitive to the temperature change, presenting a great potential in practical applications. | Keywords: | Fiber-optic LSPR sensors Localized surface plasmon resonance State of charge monitoring Supercapacitor |
Publisher: | De Gruyter | Journal: | Nanophotonics | ISSN: | 2192-8606 | EISSN: | 2192-8614 | DOI: | 10.1515/nanoph-2019-0504 | Rights: | © 2020 Jie Zhu, Shengchun Liu et al., published by De Gruyter/Berlin/Boston. This work is licensed under the Creative Commons Attribution 4.0 Public License. BY 4.0 The following publication Qian, S., Chen, X., Jiang, S., Pan, Q., Gao, Y., Wang, L., ... & Liu, S. (2020). Direct detection of charge and discharge process in supercapacitor by fiber-optic LSPR sensors. Nanophotonics, v. 9, no. 5, p. 1071–1079 is available at https://doi.org/10.1515/nanoph-2019-0504 |
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