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题名: All-Solid-State Flexible Fiber-Based MXene Supercapacitors
作者: Hu, Minmin;  Li, Zhaojin;  Li, Guoxian;  Hu, Tao;  Zhang, Chao;  Wang, Xiaohui
发表日期: 2017-10-1
摘要: Flexible fiber-shaped supercapacitors are promising energy-storage devices in wearable smart electronics. Exploring the knittable fiber-type electrode with high capacitance would promote the wide-scale application of such capacitors. Herein, a solution-processed methodology to fabricate all-solid-state, flexible, and fiber-based supercapacitors employing Ti3C2Tx MXene is proposed. Commercially available silver-plated nylon fibers are chosen as fibrous structural support for the first time. Through mildly baking the surfactant-free Ti3C2Tx flakes suspension loaded on the silver-plated nylon fibers, a uniform and adhesive film consisting of Ti3C2Tx nanometer-thick flakes is well established in a parallel manner on the highly conductive fibrous support. It is emphasized that the chemically cross-linked polyvinyl alcohol-H2SO4 hydrogel is served as a solid-state electrolyte that guarantees the structural integrity and mechanical strength of the assembled capacitor. The fabricated capacitor exhibits a high areal capacitance of 328 mF cm(-2) with excellent cyclability and flexibility, capacitance retention remaining at least above 80% under various deformation modes including bending, twisting, and knotting. The device based on the all-solid-state, fiber-type capacitors can drive a light-emitting diode. This work proposes a feasible strategy, offering a platform for rational designs of flexible electronics employing a large family of MXenes and their heterostructures as well.
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Recommended Citation:
Hu, Minmin,Li, Zhaojin,Li, Guoxian,et al. All-solid-state Flexible Fiber-based Mxene Supercapacitors[J]. Wiley,2017,2(10):-.

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