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Title: All-in-one stretchable coaxial-fiber strain sensor integrated with high-performing supercapacitor
Authors: Pan, Z.
Yang, J.
Li, L.
Gao, X.
Kang, Lixing
Zhang, Y.
Zhang, Qichong
Kou, Z.
Zhang, T.
Wei, Lei
Yao, Y.
Wang, J.
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2020
Source: Pan, Z., Yang, J., Li, L., Gao, X., Kang, L., Zhang, Y., Zhang, Q., Kou, Z., Zhang, T., Wei, L., Yao, Y. & Wang, J. (2020). All-in-one stretchable coaxial-fiber strain sensor integrated with high-performing supercapacitor. Energy Storage Materials, 25, 124-130.
Project: MOE2016-T2-2-138
Journal: Energy Storage Materials
Abstract: Ever-increasing attempts have recently been focused on exploring stretchable fiber-shaped integrated wearables, owing to their multi-functionalities and mechanical flexibilities. However, a rational design and effective integration of multi-functional components, such as strain sensor and high-performing energy storage, into one single fiber remains a great challenge. Herein, we have achieved an all-in-one stretchable coaxial-fiber sensing system simultaneously integrating strain detection and power supporting supercapacitor. The asymmetric stretchable coaxial-fiber supercapacitor is made on an elastic fiber, with a maximum working voltage of 1.8 V, by adopting manganese dioxide and polypyrrole deposited on aligned carbon nanotube sheets as the positive and negative electrode, respectively. Benefiting from the unique coaxial-fiber integrated architecture and advanced electrode design, the optimized device delivers a high stack volumetric energy density of 1.42 mWh cm−3, and an outstanding flexibility with 85.1% capacitance retention after stretching for 6000 cycles at a strain of 200%. The all-in-one stretchable coaxial-fiber strain sensing system shows consistent self-supported performance with a superior stability and durability at repeatedly unloading/loading of 40% applied strain for 10000 cycles, after one single charge. The present work demonstrates the new proof-of-concept for integration of strain element with energy storage into a single stretchable fiber for the next generation wearables.
ISSN: 2405-8297
DOI: 10.1016/j.ensm.2019.10.023
Rights: © 2019 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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