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Epidermal Supercapacitor with High Performance
- Source :
- Advanced Functional Materials. 26:8178-8184
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- Recent development in epidermal and bionic electronics systems has promoted the increasing demand for supercapcacitors with micrometer-thickness and good compatibility. Here, a highly flexible free-standing epidermal supercapacitor (SC-E) with merely 1 μm thickness and high performance is developed. Single-walled carbon nanotube/poly(3,4-ethylenedioxythiophene) hybrid films with unique inner-connected reticulation are adopted as electrodes for ultrathin structure and high electric conductivity. Then, based on two substrates with different surface energies, a stepwise lift-off method is presented to peel off the ultrathin integrated supercapacitor from the substrates nondestructively. As a result of the high conductive hybrid electrodes and the thin electrolyte layer, the as-designed supercapacitors (based on the total mass of two electrodes) achieve a good capacitance of 56 F g−1 and a superhigh power density of 332 kW kg−1, which manifest superior performance in contrast to the other devices fabricated by traditional electrodes. Meanwhile, the ultrashort response time of 11.5 ms enables the epidermal supercapacitor (SC-E) work for high-power units. More importantly, the free-standing structure and outstanding flexibility (105 times bending) endow the SC-E with excellent compatibility to be integrated and work in the next generation of smart and epidermal systems.
- Subjects :
- Supercapacitor
Materials science
Nanotechnology
02 engineering and technology
Carbon nanotube
Electrolyte
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Capacitance
0104 chemical sciences
Electronic, Optical and Magnetic Materials
law.invention
Biomaterials
law
Electrode
Electrochemistry
0210 nano-technology
Electrical conductor
Layer (electronics)
Power density
Subjects
Details
- ISSN :
- 16163028 and 1616301X
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Advanced Functional Materials
- Accession number :
- edsair.doi...........1bc0cc5e6964d82f2c8dbf758d44ea97