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首页> 外文期刊>Advanced Materials >Enhanced Electricity Generation and Tunable Preservation in Porous Polymeric Materials via Coupled Piezoelectric and Dielectric Processes
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Enhanced Electricity Generation and Tunable Preservation in Porous Polymeric Materials via Coupled Piezoelectric and Dielectric Processes

机译：通过耦合压电和介电工艺增强多孔聚合物材料中的发电和可调谐保存

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摘要

Biological systems and artificial devices convert omnipresent low-frequency and weak mechanical stimulation into electricity for important functions. However, in-depth understanding of the energy conversion, boosting, and preservation processes of the coupled piezo-dielectric phenomenon in polymeric artificial materials is still lacking. In this study, combined experimental and simulation methods are employed to rationalize the process of energy conversion and preservation via a coupled piezo-dielectric phenomena in composite polymeric films. Both the intensity of the transmembrane electric voltages and the kinetic aspects of the energy generation and preservation process are elucidated. The study indicates that composite films consisting of a conductive filler fraction below the percolation threshold, effectively convert low-frequency mechanical stimulation to preserved electrical energy. Interestingly, film structure engineered into porous film has the ability to break the intertwined high-voltage and exhibits a low-preservation-period relationship; it can simultaneously provide high electric field intensity, high induction velocity, and a long preservation period. The model is not only supported by the experiments but is also consistent with the electricity generation and preservation features of other reported piezo-dielectric films. The systematic understanding can facilitate and inspire new device designs to better address the energy, environmental, and biomedical challenges faced by modern societies.
机译：生物系统和人工装置将全能的低频和弱机械刺激转换为电力的重要功能。然而，深入了解聚合物人造材料中耦合的压电现象的能量转换，升压和保存过程仍然缺乏。在该研究中，采用组合的实验和仿真方法通过复合聚合物膜中的耦合压电介电现象来合理化能量转换和保存的过程。阐明了跨膜电压的强度和能量产生和保存过程的动力学方面。该研究表明，复合膜由低于渗透阈值的导电填料分数组成，有效地转换低频机械刺激以保持电能。有趣的是，工程到多孔膜中的薄膜结构具有打破交织的高压并表现出低保存的期间关系;它可以同时提供高电场强度，高感应速度和长保存期。该模型不仅由实验支持，而且还与其他报告的压电介电膜的发电和保存特征一致。系统理解可以促进和激发新的设备设计，以更好地解决现代社会面临的能源，环境和生物医学挑战。

著录项

  • 来源
    《Advanced Materials》 |2020年第39期|2003087.1-2003087.12|共12页
  • 作者

    Tong Wangshu; An Qi; Wang Zhihao; Li Yanan; Tong Qingwei; Li Haitao; Zhang Yi; Zhang Yihe;

  • 作者单位

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci & Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals & Beijing 100083 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    coupled piezo-dielectric phenomena; electricity generation; porous films; preservation;

    机译：耦合压电介质现象;发电;多孔薄膜;保存;

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