Improvement of the piezoelectricity of PVDF-TrFE by carbon black. (14th November 2018)

• Record Type: Journal Article
• Authors: Alamusi, ; Wu, Liangke; Hu, Ning; Yao, Jianyao; Liu, Yaolu; Ning, Huiming; Liu, Xuyang; Yuan, Weifeng; Fu, Shaoyun
• Is Part Of: Materials research express. Volume 6:Number 2(2019)
• Publication Date: 2018-11-14
• Subjects: PVDF-TrFE -- piezoelectricity -- composite -- carbon black -- energy harvesting; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aaebbb
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: In order to prepare PVDF-TrFE films with high piezoelectric performance, carbon black (CB), in the range of 0.0 wt% to 0.8 wt%, was added into PVDF-TrFE/DMF solutions. To investigate the effects of CB on the power generation capability, various fabricated films were attached on a vibrating plate, and then the output voltages and harvested power density were measured. The composite film was optimized with a calibrated open circuit voltage of 10.09 V when the CB content was at 0.8 wt%, which was about 79% higher than that of the pure PVDF-TrFE films (5.63 V). Meanwhile, the energy harvesting capability was enhanced by 164%. Fourier transform infrared spectroscopy and other characterization techniques show that the addition of CB resulted in the easier formation of β -phase (piezoelectric) rather than α -phase (non-piezoelectric) due to the nucleate role of CB during the preparation process of the composite films.