Highly compression-tolerant folded carbon nanotube/paper as solid-state supercapacitor electrode

Yu Song; Xiaoliang Cheng; Haotian Chen; Mengdi Han; Xuexian Chen; Jiahuan Huang; Zongming Su; Haixia Zhang

Highly compression-tolerant folded carbon nanotube/paper as solid-state supercapacitor electrode

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Author(s): Yu Song ¹ ; Xiaoliang Cheng ¹ ; Haotian Chen ² ; Mengdi Han ¹ ; Xuexian Chen ² ; Jiahuan Huang ¹ ; Zongming Su ¹ ; Haixia Zhang ^{1, 2}
- Affiliations: 1: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, People's Republic of China ;
  2: Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, People's Republic of China
Source: Volume 11, Issue 10, October 2016, p. 586 – 590
DOI: 10.1049/mnl.2016.0255 , Online ISSN 1750-0443

Received 05/05/2016, Accepted 28/06/2016, Published 01/10/2016

An original highly compression-tolerant folded carbon nanotube (CNT)/paper electrode, which could be assembled into compressible solid-state supercapacitor with polyvinyl alcohol/phosphoric acid gel electrolyte, is designed. It is worth mentioning that both the compression-tolerant ability of the folded structure and the strain ability of the CNT electrode are conducive to achieving the compressible supercapacitor. Such device could withstand pressure and shape-changing, which has great potential to be used in various environments. This compressible solid-state supercapacitor also owns the maximum specific capacitance of 11.07 mF/cm², and capacitance retention retains more than 90% after 100 cycling times. Furthermore, the stability performance of the device is also discussed which is almost steady under 50% strain state. When two devices are connected in serial and fully charged, this power unit could light up a red light emitting diode continuously even under the compression state. Therefore, this device performs as a promising candidate to be compatible with other compression-tolerant electronics and enlightens a broad field of compressible energy storage and self-powered systems.

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Highly compression-tolerant folded carbon nanotube/paper as solid-state supercapacitor electrode

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