Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 49, Pages 42356-42362Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b15104
Keywords
coaxial fiber; self-charging power system; triboelectric nanogenerator; supercapacitor; wearable electronics
Funding
- National Natural Science Foundation of China (NSFC) [U1432249, 61804103]
- National Key RAMP
- D Program of China [2017YFA0205002]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [18KJA535001, 14KJB150020]
- Natural Science Foundation of Jiangsu Province of China [BK20170343]
- China Postdoctoral Science Foundation [2017M610346]
- State Key Laboratory of Silicon Materials, Zhejiang University [SKL2018-03]
- Nantong Municipal Science and Technology Program [GY12017001]
- Collaborative Innovation Center of Suzhou Nano Science Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- 111 Project
- Joint International Research Laboratory of Carbon-Based Functional Materials and Devices
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Although there has been rapid advancement in wearable electronics, challenges still remain in developing wearable and sustainable power sources with simple fabrication and low cost. In this work, we demonstrate a flexible coaxial fiber by fabricating a one-dimensional triboelectric nanogenerator (TENG) outside and a supercapacitor (SC) inside, which can not only harvest mechanical energy but also store energy in the all-in-one fiber. In such a coaxial fiber, carbon fiber bundles are utilized as the electrode material for the TENG as well as the active and electrode material for the SC. Meanwhile, silicone rubber serves as the separator between the SC and TENG, as the triboelectric material for the TENG, and as the encapsulation material for the whole fiber as well. Moreover, both SC and TENG exhibit good performance and stability, which ensures their long-term use in daily life. Because of the flexibility and durability of the carbon fiber and silicone rubber, the proposed coaxial fibers show great flexibility, which could be further knitted as cloth for sustainably powering wearable electronic devices. This work presents a promising platform for wearable electronics as well as smart textiles.
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