在以分子为基础的铁电中实现了巨大的机电转换系数
Bin Wang1, Zhirui Li1, Zhengxiao Tang1
1Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 Fujian China hxzhao@xmu.edu.cn lslong@xmu.edu.cn.
Chemical science
|September 9, 2024
概括
研究人员开发了一种新的基于分子的铁电材料,可以显著提高压电发电机 (PEG) 的性能. 这一突破为更高效的灵活自动供电设备提供了一条道路.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 化学 化学 化学
背景情况:
- 基于分子的铁电正在探索灵活的自动供电设备,如压电发电机 (PEG).
- 高的机电转换系数 (d33 × g33) 对于高效的非共振PEG至关重要.
- 开发具有较大的系数的基于分子的铁电仍然是一个重大挑战.
研究的目的:
- 为了合成和描述一种新的基于分子的铁电材料.
- 评估其对高性能压电能采集应用的潜力.
- 通过灵活的压电发电机来证明增强的发电.
主要方法:
- 合成基于分子的铁电 [(CH3) 3NCH2CH2Cl][GaBr4] (1).
- 测量压电和机电转换系数的测量.
- 使用与聚甲基 (PDMS) 混合的材料制造和测试压电发电机 (PEG).
主要成果:
- 合成的材料 (1) 呈现出最大的压电系数 (~454 pC N-1) 和电机转换系数 (4953.1 × 10-12 m2 N-1) 对于独立的多晶颗粒.
- 一种包含15%重量的材料 (1) 和PDMS的PEG实现了120μW cm-2.2的功率密度.
- 这代表了铁电@PDMS PEGs.报告的最高功率密度.
结论:
- 新型基于分子的铁电 [(CH3) 3NCH2CH2Cl][GaBr4] 显示出了特殊的压电特性.
- 这种材料显著提高了压电发电机的性能,实现了创纪录的功率密度.
- 它对开发先进的灵活的自动供电电子设备具有很大的前景.
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