首页|PVDF/6H-SiC composite fiber films with enhanced piezoelectric performance by interfacial engineering for diversified applications

PVDF/6H-SiC composite fiber films with enhanced piezoelectric performance by interfacial engineering for diversified applications

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Piezoelectric silicon carbide(SiC)has been quite attractive due to its superior chemical and physical properties as well as wide potential applications.However,the inherent brittleness and unsatisfactory piezoelectric response of piezoelectric semiconductors remain the major obstacles to their diversified ap-plications.Here,flexible multifunctional PVDF/6H-SiC composite fiber films are fabricated and utilized to assemble both piezoelectric nanogenerators(PENGs)and stress/temperature/light sensors.The open cir-cuit voltage(Voc)and the density of short circuit current(Isc)of the PENG based on the PVDF/5 wt％6H-SiC composite fiber films reach 28.94 V and 0.24 pA cm-2,showing a significant improvement of 240％and 300％compared with that based on the pure PVDF films.The effect of 6H-SiC nanoparticles(NPs)on inducing interfacial polarization and stress concentration in composite fiber films is proved by first-principles calculation and finite element analysis.The stress/temperature/light sensors based on the composite fiber film also show high sensitivity to the corresponding stimuli.This study shows that the PVDF/6H-SiC composite fiber film is a promising candidate for assembling high-performance energy har-vesters and diverse sensors.

6H-SiCPVDFMultifunctional composite fiber filmEnergy harvesterStress/temperature/light sensor

Linlin Zhou、Tao Yang、Chunyu Guo、Kang Wang、Enhui Wang、Laipan Zhu、Hailong Wang、Sheng Cao、Kuo-Chih Chou、Xinmei Hou

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Institute for Carbon Neutrality,University of Science and Technology Beijing,Beijing 100083,China

Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 101400,China

School of Materials Science Engineering,Zhengzhou University,Zhengzhou 450001,China

State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures,Guangxi University,Nanning 530004,China

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国家杰出青年科学基金国家自然科学基金国家自然科学基金国家自然科学基金中央高校基本科研业务费专项State Key Laboratory of Featured Metal Materials and Lifecycle Safety for Composite Structures,Guangxi UniversityInterdisciplinary Research Project for Young Teachers of USTB(Fundamental Research Funds for the Central Universities)

52025041519020205197402152250091FRF-TP-20-02C22021GXYSOF12FRF-IDRY-21-028

2024

10.1016/j.jmst.2023.04.071

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.170(3)
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