1. Superelastic Hybrid CNT/Graphene Fibers for Wearable Energy Storage.
- Author
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Lu, Zan, Foroughi, Javad, Wang, Caiyun, Long, Hairu, and Wallace, Gordon G.
- Subjects
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CARBON nanotubes , *ENERGY storage , *WEARABLE technology , *ELECTROPLATING , *POLYANILINES - Abstract
Abstract: The demands for wearable technologies continue to grow and novel approaches for powering these devices are being enabled by the advent of new electromaterials and novel fabrication strategies. Herein, a novel approach is reported to develop superelastic wet‐spun hybrid carbon nanotube graphene fibers followed by electrodeposition of polyaniline to achieve a high‐performance fiber‐based supercapacitor. It is found that the specific capacitance of hybrid carbon nanotube (CNT)/graphene fiber is enhanced up to ≈39% using a graphene to CNT fiber ratio of 1:3. Fabrication of spring‐like coiled fiber coated with an elastic polymer shows an extraordinary elasticity capable of 800% strain while affording a specific capacitance of ≈138 F g−1. The elastic rubber coating enables extreme stretchability and enabling cycles with up to 500% strain for thousands of cycles with no significant change in its performance. Multiple supercapacitors can be easily assembled in series or parallel to meet specific energy and power needs. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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