Journal article

Interfacial piezoelectric polarization locking in printable Ti3C2Tx MXene-fluoropolymer composites.

Nick A Shepelin, Peter C Sherrell, Emmanuel N Skountzos, Eirini Goudeli, Jizhen Zhang, Vanessa C Lussini, Beenish Imtiaz, Ken Aldren S Usman, Greg W Dicinoski, Joseph G Shapter, Joselito M Razal, Amanda V Ellis

Nature Communications | Published : 2021

Abstract

Piezoelectric fluoropolymers convert mechanical energy to electricity and are ideal for sustainably providing power to electronic devices. To convert mechanical energy, a net polarization must be induced in the fluoropolymer, which is currently achieved via an energy-intensive electrical poling process. Eliminating this process will enable the low-energy production of efficient energy harvesters. Here, by combining molecular dynamics simulations, piezoresponse force microscopy, and electrodynamic measurements, we reveal a hitherto unseen polarization locking phenomena of poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) perpendicular to the basal plane of two-dimensional (2D) Ti3C2T..

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