An application system of an optical fiber sensing probe for detecting the electric charge of a supercapacitor electrode and a preparation method of the optical fiber sensing probe
A technology of optical fiber sensing probes and supercapacitors, which is applied in the direction of measuring electrical variables, measuring devices, and electrochemical variables of materials. It can solve the problems of temperature changes affecting detection results and other issues, and achieve low cost and insensitivity to temperature fluctuations.
Active Publication Date: 2021-12-17
HEILONGJIANG UNIV
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[0004] In order to solve the above-mentioned real-time detection of the charge of the electrode of the supercapacitor and avoid the influence of the temperature change on the detection result during the charging and discharging process of the supercapacitor, the present invention provides an application of an optical fiber sensing probe for detecting the charge of the electrode of the supercapacitor System and preparation method of optical fiber sensing probe
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[0041] Preparation of the gold nanoparticle solution: use aqua regia to soak the required glass instruments such as round-bottom flasks, stirrers, beakers, etc. for 2 hours, then clean them with deionized water, and dry them. In a 250ml round bottom flask, add 1ml, 1% chloroauric acid and 100ml deionized water, heat the solution to boiling with stirring, add 1.5ml 1% sodium citrate solution, continue stirring for 15min under boiling, the solution It will gradually change from colorless to wine red, cool to room temperature, and obtain a gold nanoparticle solution.
[0042]Prepare the reflection area of the silver mirror: Cut the multimode fiber with a core diameter of 600um and a numerical aperture of 0.37 into 7.5cm, then remove the coating and cladding at one end of the fiber by 2mm, and attach a layer of silver to the end of the fiber through the silver mirror reaction Then use AB glue to cover the silver mirror to protect the silver mirror and prevent the SPR signal gene...
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Abstract
The invention discloses an optical fiber sensing probe application system and a preparation method of the optical fiber sensing probe for detecting the electric charge of supercapacitor electrodes, and belongs to the technical field of optical fiber sensing technology applied to electrochemistry. The invention solves the problems that the existing supercapacitor electrode charges cannot be detected in real time, and avoids the problem that the temperature change in the charging and discharging process has an influence on the detection results. The invention provides an optical fiber localized surface plasmon resonance (LSPR) sensing technology for supercapacitor monitoring. The sensing region is formed based on the principle of LSPR by adsorbing gold nanoparticles (AuNPs) on the core of the multimode fiber. The optical fiber is implanted inside the supercapacitor to realize in-situ real-time monitoring of the charging and discharging process. Compared with the traditional surface plasmon resonance (SPR) sensor, the optical fiber LSPR sensing probe obtained by the present invention is insensitive to temperature fluctuations, and is more suitable for supercapacitor monitoring.
Description
technical field [0001] The invention relates to an application system of an optical fiber sensing probe for detecting the electric charge of a supercapacitor electrode and a preparation method of the optical fiber sensing probe, and belongs to the technical field of the application of optical fiber sensing technology to electrochemistry. Background technique [0002] Electrochemical energy storage devices such as supercapacitors have attracted much attention because they are considered to be the new energy storage devices with the highest energy storage efficiency and the most promising development prospects, and they have the characteristics of high power density, ultra-long life, and wide operating temperature. It is widely used in clean electricity, electric vehicles, mobile medical care, portable electronic devices and other fields. How to accurately and real-time monitor the real-time energy storage and health status of the supercapacitor in the working state is of grea...
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IPC IPC(8): G01R29/24G01N27/48G01N21/552
CPCG01R29/24G01N27/48G01N21/554
Inventor 钱思宇姜石玉刘盛春陈鑫龙
Owner HEILONGJIANG UNIV
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