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Stretchable π-conjugated polymer electrets for mechanoelectric generators
- Source :
- Polymer Journal. 55:529-535
- Publication Year :
- 2022
- Publisher :
- Springer Science and Business Media LLC, 2022.
-
Abstract
- Electrets are materials that retain quasi-permanent electric charges and are attracting attention as key components of batteryless micropower supplies. A chemical structure that facilitates ionization and that can stabilize these charges, such as a π-conjugated system, is expected to increase the charge density compared with that of conventional insulating polymers. Here, we report a mechanoelectric generator (MEG) (vibrational energy harvester) that uses alkylated π-conjugated polymers (Alk-CPs), which can be monopolarized either into positive or negative mode electrets. With the attachment of insulating, bulky, yet flexible alkyl side chains to the π-conjugated backbone, the poled Alk-CPs showed long charge lifetime suitable for MEGs. The elastic modulus of the electret was adjusted to approximately match that of the stretchable polyurethane substrate by blending two miscible Alk-CPs with different elastic moduli, producing a laminated film that could be stretched up to 300%. The MEG presented showed conformability when applied to a deformable object.
- Subjects :
- Polymers and Plastics
Materials Chemistry
Subjects
Details
- ISSN :
- 13490540 and 00323896
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Polymer Journal
- Accession number :
- edsair.doi...........7ff81cc5dab17d73360df06173386198
- Full Text :
- https://doi.org/10.1038/s41428-022-00725-w