Tailoring piezoelectric polymer nanofibers for energy harvesting
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초록
내용
Piezoelectric polymer nanofibers have emerged as a competitive platform for shape-adaptive energy harvesting and sensing applications because of mechanical flexibility, lightweight, and relatively low-temperature processing. However, a key challenge has been the relatively low piezoelectric coefficients of these organic piezoelectric materials when compared to their inorganic counterparts. Here, we summarize a collection of advances that push the boundaries to achieve a drastic enhancement of mechanical energy harvesting performance by tailoring both material and structural properties of electrospun piezoelectric polymer fibers at multi-scales. Engineering structural morphology of piezoelectric materials from molecular to device scales will be discussed as a route to achieving improvement in the key figures of merit for energy harvesting and sensing, along with our unfolding new understanding of the underlying physics.