Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications
Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications
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聚偏氟乙烯基铁电聚合物增强压电性及其应用研究进展
DOI：
10.1002/adfm.202301302
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发表时间：
2023-05
影响因子：
19
通讯作者：
Liwei Zhang;Shuangfeng Li;Z. Zhu;Guanchun Rui;Bin Du;Da-Zhu Chen;Yanfei Huang;Lei Zhu
中科院分区：
文献类型：
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作者：
Liwei Zhang;Shuangfeng Li;Z. Zhu;Guanchun Rui;Bin Du;Da-Zhu Chen;Yanfei Huang;Lei Zhu
聚偏氟乙烯 (PVDF) 基聚合物在柔性和可穿戴电子产品中表现出巨大的应用潜力，但压电系数较低（例如 -d33 < 30 pC N−1）。通过调控PVDF的半晶结构，可以有效提高PVDF的压电性。然而，关于哪种成分是压电的主要贡献者仍然存在争议。因此，目前提高PVDF压电性的方法可分为非晶相调制、晶区调制和晶-非晶界面调制。在这里，首先讨论软聚合物压电系数的基本原理和测量。然后，回顾了三种不同类别的结构调制。在每个类别中，讨论了物理理解和提高 PVDF 压电性能的策略。特别强调了晶体-非晶界面上定向非晶部分在决定 PVDF 压电性方面的关键作用。最后对高性能压电聚合物的未来发展进行了展望。
Poly(vinylidene fluoride) (PVDF)‐based polymers demonstrate great potential for applications in flexible and wearable electronics but show low piezoelectric coefficients (e.g., −d33 < 30 pC N−1). The effective improvement for the piezoelectricity of PVDF is achieved by manipulating its semicrystalline structures. However, there is still a debate about which component is the primary contributor to piezoelectricity. Therefore, current methods to improve the piezoelectricity of PVDF can be classified into modulations of the amorphous phase, the crystalline region, and the crystalline–amorphous interface. Here, the basic principles and measurements of piezoelectric coefficients for soft polymers are first discussed. Then, three different categories of structural modulations are reviewed. In each category, the physical understanding and strategies to improve the piezoelectric performance of PVDF are discussed. In particular, the crucial role of the oriented amorphous fraction at the crystalline–amorphous interface in determining the piezoelectricity of PVDF is emphasized. At last, the future development of high performance piezoelectric polymers is outlooked.