期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 2, 页码 618-622出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201409385
关键词
conductive materials; nanotubes; polymers; scanning probe microscopy; wires
资金
- AFOSR [FA-9550-12-1-0069]
- NSF [CMMI-1266295, AIR-IIP-1343270, DMR-1106160]
- DAGSI
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1106160] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1266295, 1266319] Funding Source: National Science Foundation
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1343270] Funding Source: National Science Foundation
A general approach toward extremely stretchable and highly conductive electrodes was developed. The method involves wrapping a continuous carbon nanotube (CNT) thin film around pre-stretched elastic wires, from which high-performance, stretchable wire-shaped supercapacitors were fabricated. The supercapacitors were made by twisting two such CNT-wrapped elastic wires, pre-coated with poly(vinyl alcohol)/H3PO4 hydrogel, as the electrolyte and separator. The resultant wire-shaped supercapacitors exhibited an extremely high elasticity of up to 350% strain with a high device capacitance up to 30.7Fg(-1), which is two times that of the state-of-the-art stretchable supercapacitor under only 100% strain. The wire-shaped structure facilitated the integration of multiple supercapacitors into a single wire device to meet specific energy and power needs for various potential applications. These supercapacitors can be repeatedly stretched from 0 to 200% strain for hundreds of cycles with no change in performance, thus outperforming all the reported state-of-the-art stretchable electronics.
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