基于纳米粒子的光纤LSPR传感器用于检测超级电容器电极表面电荷状态  

Nanoparticle-based fiber optic LSPR sensor used to detect the surface charge state of supercapacitor electrodes

作　　者：陈鑫龙 姜石玉 钱思宇 胡蕴薪 刘盛春[1] CHEN Xinlong;JIANG Shiyu;QIAN Siyu;HU Yunxin;LIU Shengchun(Heilongjiang Provincial Key Laboratory of Etamaterials Physics and Device,Heilongjiang University,Harbin 150080,China)

机构地区：[1]黑龙江大学黑龙江省超构材料物理与器件重点实验室,哈尔滨150080

出　　处：《黑龙江大学自然科学学报》2021年第6期730-735,共6页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(11774081);国家自然科学基金青年基金资助项目(61905069);黑龙江省人才引进项目(RCCXTJ201902)。

摘　　要：随着环境问题日益严重,具有环保清洁特质的超级电容器等新能量存储设备得到广泛关注。因此,对于实时灵活地评估能量存储器件的运行机理和充电状态(State of charge,SOC)仍然具有挑战性。电化学分析法是研究电极反应机理和电极过程动力学的重要方法,但有时不能实时在线监测内部电极的表面电荷状态。透射电子显微镜和X-射线衍射仪等检测设备由于体积庞大和价格昂贵等原因,限制了对超级电容器的原位监测的发展。提出了一种灵活便携的光纤局域表面等离子体共振(Local surface plasmon resonance,LSPR)探针,用于超级电容器内部电极的电荷量实时在线分析。将负载金纳米粒子的反射式光纤LSPR传感器贴合超级电容器电极表面,结果表明,此结构可以灵敏地监测超级电容器充放电过程中的电极表面电荷状态;通过与传统电化学工作站的结果比较,该方法得到的电荷状态与实际电荷量具有良好的线性关系,有效拓展了光纤传感器在能量检测领域的研究与应用。As environmental problems become more and more serious,the field of new energy has been extensively studied,and energy storage devices such as supercapacitors have received widespread attention with environmentally friendly and renewable characteristics.However,it is still challenging to flexibly evaluate the operating mechanism and State of charge(SOC)of energy storage devices in real time.Electrochemical analysis is an important method to study the electrode reaction mechanism and electrode process kinetics,but this method cannot monitor the surface charge state of internal electrodes online in real time.Transmission electron microscope,X-ray diffractometer and other testing equipments are bulky and expensive,which limit the development of in-situ monitoring of supercapacitors.The flexible and portable optical fiber Localized surface plasmon resonance(LSPR)probe is proposed for real-time online analysis of the internal electrode charge of supercapacitors.The reflective optical fiber LSPR sensor loaded with gold nanoparticles is implanted on the surface of the supercapacitor electrode.The results show that the method can sensitively monitor the surface charge state of the electrode during the charging and discharging process of the supercapacitor,it is found by calculation and comparison with the results of traditional electrochemical workstations.The charge state obtained by this method has a good linear relationship with the actual situation,which effectively expands the research and application of optical fiber sensors in the field of energy management.

关 键 词：光纤LSPR传感器 金纳米粒子 超级电容器 电荷检测 

分 类 号：O175.1[理学—数学]