期刊
出版社
IEEE
DOI: 10.1109/PowerMEMS49317.2019.30773705679
关键词
-
资金
- EPSRC [EP/P010164/1] Funding Source: UKRI
Charge dissipation in previous Polydimethylsiloxane (PDMS) ferroelectrets was observed and the piezoelectric coefficient d(33) of most samples drop to below 10 pC/N in one month after charging. This issue limits its long-term energy harvesting performance. This paper presents an approach to coat the PDMS with Polytetrafluoroethylene (PTFE) to enhance the surface charge stability of the ferroelectret. After coating a thin PTFE film in the void surfaces of PDMS ferroelectret, the piezoelectric coefficient d(33) obtained remained at 80 pC/N after 6 months.
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