High-performance piezoelectric composites via β phase programming

Yuanjie Su, Weixiong Li, Xiaoxing Cheng, Yihao Zhou, Shuai Yang, Xu Zhang, Chunxu Chen, Tiannan Yang (), Hong Pan, Guangzhong Xie, Guorui Chen, Xun Zhao, Xiao Xiao, Bei Li (), Huiling Tai, Yadong Jiang, Long-Qing Chen, Fei Li () and Jun Chen ()
Additional contact information
Yuanjie Su: University of Electronic Science and Technology of China
Weixiong Li: University of Electronic Science and Technology of China
Xiaoxing Cheng: The Pennsylvania State University
Yihao Zhou: University of California, Los Angeles
Shuai Yang: Xi’an Jiaotong University
Xu Zhang: Wuhan University of Technology
Chunxu Chen: University of Electronic Science and Technology of China
Tiannan Yang: The Pennsylvania State University
Hong Pan: University of Electronic Science and Technology of China
Guangzhong Xie: University of Electronic Science and Technology of China
Guorui Chen: University of California, Los Angeles
Xun Zhao: University of California, Los Angeles
Xiao Xiao: University of California, Los Angeles
Bei Li: Wuhan University of Technology
Huiling Tai: University of Electronic Science and Technology of China
Yadong Jiang: University of Electronic Science and Technology of China
Long-Qing Chen: The Pennsylvania State University
Fei Li: Xi’an Jiaotong University
Jun Chen: University of California, Los Angeles

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Polymer-ceramic piezoelectric composites, combining high piezoelectricity and mechanical flexibility, have attracted increasing interest in both academia and industry. However, their piezoelectric activity is largely limited by intrinsically low crystallinity and weak spontaneous polarization. Here, we propose a Ti3C2Tx MXene anchoring method to manipulate the intermolecular interactions within the all-trans conformation of a polymer matrix. Employing phase-field simulation and molecular dynamics calculations, we show that OH surface terminations on the Ti3C2Tx nanosheets offer hydrogen bonding with the fluoropolymer matrix, leading to dipole alignment and enhanced net spontaneous polarization of the polymer-ceramic composites. We then translated this interfacial bonding strategy into electrospinning to boost the piezoelectric response of samarium doped Pb (Mg1/3Nb2/3)O3-PbTiO3/polyvinylidene fluoride composite nanofibers by 160% via Ti3C2Tx nanosheets inclusion. With excellent piezoelectric and mechanical attributes, the as-electrospun piezoelectric nanofibers can be easily integrated into the conventional shoe insoles to form a foot sensor network for all-around gait patterns monitoring, walking habits identification and Metatarsalgi prognosis. This work utilizes the interfacial coupling mechanism of intermolecular anchoring as a strategy to develop high-performance piezoelectric composites for wearable electronics.

Date: 2022
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DOI: 10.1038/s41467-022-32518-3

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