Wearable piezoelectric nanogenerators based on reduced graphene oxide and in situ polarization-enhanced PVDF-TrFE films

Xiaoran HU, Zhitian DING, Lixun FEI, Yong XIANG*, Yuan LIN

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

63 Citations (Scopus)

Abstract

PVDF-TrFE-based wearable nanogenerators were designed and fabricated with enhanced performances via reduced graphene oxides (rGO) and in situ electric polarization. Our laboratory-made polarization system may complete the in situ poling of PVDF-TrFE films in 5 min without heating, which has the advantages of high production efficiency, excellent piezoelectric performances, and favorable uniformity, compared to traditional poling approaches. The addition of rGO into PVDF-TrFE significantly improved the crystallinity of the β-phase PVDF-TrFE and enhanced the formation of hydrogen bonds via interaction of dipoles between rGO and PVDF-TrFE. This further improved the energy-harvesting performances of these piezoelectric nanogenerators with 1.6 times of the open-circuit voltage and 2 times of the power density than that of pure PVDF-TrFE-based devices. The high production efficiency and excellent piezoelectric performances of in situ polarized rGO/PVDF-TrFE make them of great potential for self-powered, wearable/portable devices.

Original languageEnglish
Pages (from-to)6401-6409
Number of pages9
JournalJournal of Materials Science
Volume54
Issue number8
Early online date23 Jan 2019
DOIs
Publication statusPublished - 30 Apr 2019
Externally publishedYes

Bibliographical note

This work was supported by the National Basic Research Program of China (973 Program) under Grant No. 2015CB351905 and “111” Project (No. B13042).

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