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- Alam, MehebubDepartment of Physics, Jadavpur University, India (author)
The past, present, and future of piezoelectric fluoropolymers: Towards efficient and robust wearable nanogenerators
- Article/chapterEnglish2023
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- Tsinghua University Press,2023
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- LIBRIS-ID:oai:DiVA.org:liu-201583
- https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-201583URI
- https://doi.org/10.26599/NRE.2023.9120076DOI
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- Language:English
- Summary in:English
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- Funding Agencies|Linköpings Universitet, LiU, (2009-00971); Knut och Alice Wallenbergs Stiftelse, (KAW 2022-0383)
- Polyvinylidene difluoride (PVDF) derivatives in metal/PVDF/metal (MPM) sandwich structures have been studied extensively since 1969. Cousin copolymers of the same family have been discovered with fascinating piezoelectric, pyroelectric, electrocaloric, and ferroelectric properties. Solution processing, flexibility, lightweight, and thermal stability make this class of materials complementary to inorganics. Thus, PVDF based polymers potentially compete with inorganic materials for a broad range of technologies such as energy generators, loudspeakers, coolers, and memories. However, the stable non-electroactive α-phase and hydrophobic nature of PVDF are the main barriers for developoing high performing and robust MPM devices in electronic applications. In this review, we present an up-to-date overview on different methods to induce the electroactive β-phase and improve the adhesion strength with metals to ensure robust and durable MPM devices. We go through advantages and disadvantages of several methods and pinpoint future opportunities in this research area. A special attention is paid to wearable piezoelectric nanogenerators for energy harvesting from human body motion, where flexible PVDF derivatives are compared with rigid piezoelectric ceramics. While the piezoelectric coefficient of PVDF (d33 ~ 24–34 pm/V) is one order lower than ceramic materials, novel co-polymers of PVDF display d33 > 1000 pm/V upon bias. This shows promise to bring piezoelectrics to flexible and large-area applications such as smart textiles. We also discussed challenges to improve wearability, such as light weight, breathability, and flexibility.
Subject headings and genre
- NATURVETENSKAP Kemi Materialkemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Materials Chemistry hsv//eng
- energy harvesting; metal-PVDF adhesion; nanogenerators; piezoelectric polymer; polyvinylidene difluoride (PVDF); surface modification; wearable generators
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- Crispin, XavierLinköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten(Swepub:liu)xavcr43 (author)
- Department of Physics, Jadavpur University, IndiaLaboratoriet för organisk elektronik (creator_code:org_t)
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- In:Nano Research Energy: Tsinghua University Press2:42791-0091
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