Towards Integrated Flexible Energy Harvester and Supercapacitor for Self-powered Wearable Sensors
Paper in proceedings, 2020

We present the first results of a flexible energy harvester and a foldable supercapacitor to power wearable and flexible sensors. The flexible energy harvester is fabricated by using 38 mu m piezoelectric polyvinylidene difluoride (PVDF) sandwiched between carbon electrodes. Both the design and process excel in simplicity and cost-effectiveness. The flexible harvester demonstrates a power output of 2.6 mu W cm(-3) at a resonant frequency of 50 Hz with a 3dB bandwidth of about 11 Hz, which is higher than devices previously reported and similar to a commercial PZT harvester film of same size. A flexible energy storage supercapacitor (GP-SC) was fabricated using a graphite/VACNTs (vertically aligned carbon nanotubes) material as electrodes. A prototype GP-SCs has an areal capacitance of about 1.2 mF cm(-2). Finally, an integrated scheme is proposed for future work.

Author

Agin Vyas

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Qi Li

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

R. van den Eeckhoudt

Student at Chalmers

G. Gereb

RISE Research Institutes of Sweden

Anderson David Smith

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

C. Rusu

RISE Research Institutes of Sweden

Per Lundgren

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Peter Enoksson

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

2019 19TH INTERNATIONAL CONFERENCE ON MICRO AND NANOTECHNOLOGY FOR POWER GENERATION AND ENERGY CONVERSION APPLICATIONS (POWERMEMS)

19th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (Power MEMS)
Krakow, Poland,

Subject Categories

Textile, Rubber and Polymeric Materials

Energy Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/PowerMEMS49317.2019.008

More information

Latest update

11/30/2020