Enhanced Flexibility, Performance and Oxidation Stability of Micro-Supercapacitors Fabricated by Direct-Ink-Writing of MXene and PEDOT
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초록
내용
Three-dimensional printing technology is emerging as a promising method for fabricating customized energy storage devices. Previous reserach has encountered challenges such as complex processing methods, limited flexibility, and inadequate performance under mechanical stress. In this study, we demonstrate the fabrication of flexible micro-supercapacitors using direct ink writing (DIW) 3D printing. Our inks are composed of PEDOT and MXene composite gels. The homogeneous distribution of MXene nanosheets enhances the printability of the PEDOT solution and regulates the electronic structure. Additionally, we incorporated oxidation-preventing ligands and used acetone as a solvent to create a porous structure, enhancing flexibility. These devices demonstrate high areal capacitance, excellent rate performance, and outstanding cycling stability. This method enables the 3D printing of customized, flexible energy storage devices, ideal for next-generation energy storage systems.