Laser-patterned PEDOT:PSS-aramid nanofiber composite electrodes for in-plane supercapacitors with high performance, shape-diversity and ultrahigh deformation resistance
CHEMICAL ENGINEERING JOURNAL(2023)
摘要
The rapid development of portable and wearable modern electronics is in urgent need of the compatible energy storage devices, among which the flexible in-plane micro-supercapacitor (MSC) has emerged as a promising candidate. In this work, a facile and efficient laser-ablation technique was used to fabricate high performance metal-free all-solid-state in-plane MSCs with dimethyl sulfoxide-treated composite electrode (D-PA) composed of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS, PH1000) and aramid nanofibers. The effect of D-PA mass loading on the electrical and electrochemical properties of electrodes and devices was studied. The optimal MSC delivers high areal capacitance (15.4 mF/cm2 at 2 mV/s), superior charge/discharge cycling stability (capacitance hardly changes after 10,000 cycles), excellent rate performance (11.1 mF/cm2 at 3 mA/cm2) and ultrahigh resistance to arbitrary and extreme mechanical deformation (including circle-bending, free-twisting and multi-folding), which are superior to many state-of-the-art PH1000-based MSCs. Furthermore, performance of the shape-diverse device is easily tailored by series and/or parallel integration without usage of the metallic component. Such high performance MSC presents a great potential application in portable and wearable electronics even under severe deformed states.
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关键词
Supercapacitor,PEDOT,PSS,Aramid nanofiber,Laser -patterning,Deformation resistance,Cycling stability
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