1. Epidermal Supercapacitor with High Performance.
- Author
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Luan, Pingshan, Zhang, Nan, Zhou, Weiya, Niu, Zhiqiang, Zhang, Qiang, Cai, Le, Zhang, Xiao, Yang, Feng, Fan, Qingxia, Zhou, Wenbin, Xiao, Zhuojian, Gu, Xiaogang, Chen, Huiliang, Li, Kewei, Xiao, Shiqi, Wang, Yanchun, Liu, Huaping, and Xie, Sishen
- Subjects
SUPERCAPACITORS ,ELECTRODES ,HOUSEHOLD electronics ,EPIDERMIS ,ENERGY storage - 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. [ABSTRACT FROM AUTHOR]- Published
- 2016
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