全固态发电-储能柔性高介电复合薄膜的研究
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- 英文论文题名：An All-Solid-State Flexible Piezoelectric High-k Film Functioning as Both a Generator and In Situ Storage Unit
- 论文作者：佟望舒 ; 安琪 ; 张以河
- 英文论文作者：Wangshu Tong ; Qi An ; Yihe Zhang ; School of Materials Sciences and Technology ; China University of Geosciences
- 年：2016
- 作者机构：中国地质大学(北京)材料科学与工程学院;
- 论文关键词：柔性功能薄膜 ; 石墨烯 ; 高介电 ; 发电 ; 储能
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十一分会：纳米材料与器件
- 语种：中文
- 分类号：TB383.2;TM31;TM53
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十一分会 ; 纳米材料与器件
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：174k
- 原文格式：D
- 会议级别：全国
摘要
制备一种全氟叠氮苯甲酸改性石墨烯/聚偏氟乙烯-六氟丙烯(rGO-TFB/PVDF-HFP)新型功能复合薄膜材料,并制备了全固态柔性薄膜器件。该材料具有能量转化和储存双重功能,可作为纳米压电发电机和电容器的介质,将身体产生的低频率机械能转化为电能并原位存储,用于需要时释放。该类集发电和储能于一体的全固态柔性器件,可望用于运动传感器以及信息存储等领域。该项研究的亮点包括:(1)通过用全氟叠氮苯甲酸对填料石墨烯进行表面改性,可以提高填料和高分子基体的界面相容性,得到高介电常数和低介电损耗的柔性薄膜(在100Hz下,其介电常数为158、介电损耗为0.42),使得其在低频率下的储电能力显著提高。(2)将纳米复合薄膜制成器件后,对其发电和原位储能性质进行研究。通过手指运动驱动薄膜弯曲,使其上下表面产生电势差;保持外电路开路,使电势差保持一段时间后再释放电信号。石墨烯的添加可以增加薄膜储存电信号的时间,提高其储电能力。
An all-solid-state flexible generator–capacitor polymer composite film converts low-frequency biomechanical energy into stored electric energy. This design, which combines the functionality of a generator with a capacitor, is realized by employing poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP) in the simultaneous dual role of piezoelectric generator and polymer matrices of the flexible capacitor. Proper surface modification of the reduced graphene oxide(rGO) fillers in the polymeric matrices is indispensable in achieving the superior energy storage performance of the composite film. The heightened dielectric performance stems from enhanced compatibility of the rGO fillers and PVDF-HFP matrices, and a microcapacitor model properly explains the dielectric behaviors. A device that is easily fabricated using our film allows timely decoupled motion energy harvest and output of the motion-generated electricity. This report opens new design possibilities in the fields of motion sensors, information storage and high-voltage output by accumulating low-frequency random biological motions.
An all-solid-state flexible generator–capacitor polymer composite film converts low-frequency biomechanical energy into stored electric energy. This design, which combines the functionality of a generator with a capacitor, is realized by employing poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP) in the simultaneous dual role of piezoelectric generator and polymer matrices of the flexible capacitor. Proper surface modification of the reduced graphene oxide(rGO) fillers in the polymeric matrices is indispensable in achieving the superior energy storage performance of the composite film. The heightened dielectric performance stems from enhanced compatibility of the rGO fillers and PVDF-HFP matrices, and a microcapacitor model properly explains the dielectric behaviors. A device that is easily fabricated using our film allows timely decoupled motion energy harvest and output of the motion-generated electricity. This report opens new design possibilities in the fields of motion sensors, information storage and high-voltage output by accumulating low-frequency random biological motions.
引文