材料科学
卤化物
钙钛矿(结构)
压电
氟化物
金属
相(物质)
金属卤化物
化学工程
光电子学
复合材料
无机化学
有机化学
冶金
化学
工程类
作者
Yong‐Ji Gong,Zhigang Li,Tian‐Meng Guo,Chen Zhao,Ying Zhang,Min He,Jie Yu,Wei Li,Xian‐He Bu
标识
DOI:10.1002/aenm.202400241
摘要
Abstract Fluoropolymers and metal halide perovskites (MHPs), as two classes of important piezoelectric materials, suffer from active phases through a facile process and brittleness led poor manufacturability, respectively. Here, TMCM‐CdCl 3 /PVDF nanocomposites (TMCM = trimethylchloromethyl ammonium, PVDF = polyvinylidene fluoride) are synthesized to overcome the above shortcomings. The abundant hydrogen (H) and chlorine (Cl) sites in TMCM‐CdCl 3 can interlock with H and fluorine (F) atoms within PVDF via C─H···Cl and C─H···F interactions. This programming effect augments the dipole alignment and consequently promotes the formation of polar phases within PVDF. The devices made by these nanocomposites exhibit high energy harvesting properties surpassing established MHP/PVDF analogues, and prominent performance in sensing delicate human motions. Moreover, the devices show exceptional capabilities for detecting underwater ultrasound waves. The signal intensity is ≈4 times that of commercial PVDF film devices, and the frequency distortion is only a quarter of that observed in commercial ceramic transducers. This study opens up new possibilities for developing high‐performance piezoelectric nanocomposites and the creation of advanced electromechanical devices.
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