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Vanadium Metal‐organic Framework‐derived Multifunctional Fibers for Asymmetric Supercapacitor, Piezoresistive Sensor, and Electrochemical Water Splitting by Jie Pu; Yong Gao; Qinghe Cao; Gangwen Fu; Xing Chen; Zhenghui Pan; Cao Guan is a Engineering article available to read on EtoBox.

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## Abstract Fiber‐shaped integrated devices are highly desirable for wearable and portable smart electronics, owing to their merits of lightweight, high flexibility, and wearability. However, how to effectively employ multifunctional fibers in one integrated device that can simultaneously achieve energy storage and utilization is a major challenge. Herein, a set of multifunctional fibers all derived from vanadium metal‐organic framework nanowires grown on carbon nanotube fiber (V‐MOF NWs@CNT fiber) is demonstrated, which can be used for various energy storage and utilization applications. First, a fiber‐shaped asymmetric supercapacitor (FASC) is fabricated based on the CoNi‐layered double hydroxide nanosheets@vanadium oxide NWs@CNT fiber (CoNi‐LDH NSs@V~2~O~5~ NWs@CNT fiber) as the positive electrode and vanadium nitride (VN) NWs@CNT fiber as the negative electrode. Benefiting from the outstanding compatibility of the functional materials, the FASC with a maximum working voltage of 1.7 V delivers a high‐stack volumetric energy density of 11.27 mW·h/cm^3^. Then, a fiber‐shaped integrated device is assembled by twisting a fiber‐shaped piezoresistive sensor (FPS; VN NWs@CNT fiber also

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Author

Jie Pu; Yong Gao; Qinghe Cao; Gangwen Fu; Xing Chen; Zhenghui Pan; Cao Guan

Publisher

Wiley

Published

2022

Language

EN

Field

Engineering (Physical Sciences)