Flexible self-powered piezo-supercapacitor system for wearable electronics

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Skolkovo Institute of Science and Technology
  • National Research University of Electronic Technology
  • Sechenov First Moscow State Medical University
  • Canatu Ltd.
  • National University of Science and Technology "MISiS"

Abstract

The integration of energy harvesting and energy storage in a single device both enables the conversion of ambient energy into electricity and provides a sustainable power source for various electronic devices and systems. On the other hand, mechanical flexibility, coupled with optical transparency of the energy storage devices, is required for many applications, ranging from self-powered rolled-up displays to wearable optoelectronic devices. We integrate a piezoelectric poly(vinylidene-trifluoroethylene) (P(VDF-TrFE)) film into a flexible supercapacitor system to harvest and store the energy. The asymmetric output characteristics of the piezoelectric P(VDF-TrFE) film under mechanical impacts results in effective charging of the supercapacitors. The integrated piezo-supercapacitor exhibits a specific capacitance of 50 F g-1. The open-circuit voltage of the flexible and transparent supercapacitor reached 500 mV within 20 s during the mechanical action. Our hybridized energy harvesting and storage device can be further extended to provide a sustainable power source for various types of sensors integrated into wearable units.

Details

Original languageEnglish
Article number325501
Number of pages7
JournalNanotechnology
Volume29
Issue number32
Publication statusPublished - 5 Jun 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • energy harvesting, energy storage, piezosupercapacitor, poly(vinylidene-trifluoroethylene), single-walled carbon nanotubes

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