Enhanced Piezoelectric Coefficient of PVDF-TrFE Films via In Situ Polarization

被引：32
|
作者：
Hu, Xiaoran [1 ,2 ]
You, Mengli [1 ,2 ]
Yi, Na [1 ,2 ]
Zhang, Xiaokun [1 ,2 ]
Xiang, Yong [1 ,2 ,3 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Mat & Energy, Chengdu, Peoples R China
[2] Univ Elect Sci & Technol China, Adv Energy Inst, Chengdu, Peoples R China
[3] Sichuan Flexible Display Mat Genome Engn Ctr, Chengdu, Peoples R China
来源：
FRONTIERS IN ENERGY RESEARCH | 2021年 / 9卷
关键词：
PVDF-TrFE; in situ polarization; D; 33; piezoelectricity; nanogenerators; VINYLIDENE FLUORIDE; PHASE-TRANSITIONS; POLY(VINYLIDENE; CRYSTALLIZATION; BEHAVIOR; MEMBRANE; SENSOR;
D O I：
10.3389/fenrg.2021.621540
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The d33 coefficient = 28 pC/N of PVDF-TrFE piezoelectric films was achieved by the in situ polarization. Compared with traditional poling methods, the in situ polarization is performed with low poling voltage and short poling time, and it can ensure the PVDFTrFE film with enhanced piezoelectric performances and uniform distribution among a large area of 200 mm2 x 200 mm2. The processing influence of drying, annealing, and poling on the crystalline properties and piezoelectric performances were investigated. Besides, the obtained PVDF-TrFE films present a good piezoelectric response to different extents of mechanical stimulations, which have great potential in energy harvesting applications.
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页数：7
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