Abbreviation (ISO4): Journal of Materials Engineering
Editor in chief: Xiangbao CHEN
Journal of Materials Engineering >
Preparation and properties of 3D cross-finger electrode symmetrical micro capacitor based on PI
Received date: 2023-01-10
Revised date: 2023-08-12
Online published: 2024-03-10
With the development of the Internet of Things, the rapid development of miniaturized self-powered electronic products and further micro-modulation greatly stimulate the urgent demand for microscale electrochemical energy storage devices. In each electrochemical energy storage device, the supercapacitor based on the plane pattern shape is highly compatible with modern electronic products in terms of functional features such as miniaturization and integration. In this work, the flexible 3D interdigital electrode symmetric micro capacitor was prepared by the combination of semiconductor preparation technology and electrophoresis printing technology, and the 3D printing was carried out by using oxygen enriched activated carbon ink. The 3D interdigital symmetric electrode was prepared by adjusting and optimizing the electric field strength, line width, number of printing layers and other parameters. The energy dispersive spectrometer (EDS), scanning electron microscopy(SEM),rheometer,electrochemical workstation and test system were used to characterize materials, pastes and microcapacitor devices, and to explore the influence of materials and pastes on the performance of 3D interdigital microcapacitor. The results that the 3D interdigital supercapacitor prepared by the combination of semiconductor and electrophoresis printing process has good performances, and its area capacitance can reach 22.3 mF·cm-2. In addition, the device can achieve 96% capacity retention after 2000 cycles through packaging optimization. This simple and controllable 3D jet printing technology provides an effective way to prepare advanced miniaturized electrochemical energy storage devices.
Key words: flexible; interdigital electrode; 3D; micro capacitor
Weiwei JI , Peng GAO , Baocheng LIU , Zhankun MENG , He WANG , Xingjiang LIU . Preparation and properties of 3D cross-finger electrode symmetrical micro capacitor based on PI[J]. Journal of Materials Engineering, 2023 , 51(11) : 205 -213 . DOI: 10.11868/j.issn.1001-4381.2023.000018
图1 未处理(1)和富含官能团(2)的活性炭材料SEM图(a)低倍;(b)高倍Fig.1 SEM images of activated carbon material with untreated(1) and rich functional groups(2)(a)low-magnification;(b)high-magnification |
图5 油墨浆料的表征图和喷印电极实物图(a)油墨黏性与角频率的关系图;(b)油墨的损耗模量和储存模量与频率的关系图;(c)电流体喷印制备的电极照片Fig.5 Characterization images of printing ink and real image of jet printing electrode(a)diagram of ink viscosity and angular frequency;(b)relationship diagram of ink loss modulus and memory modulus with frequency;(c)electric fluid printing electrode image |
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