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 language | English |
|---|---|
| Pages (from-to) | 6401-6409 |
| Number of pages | 9 |
| Journal | Journal of Materials Science |
| Volume | 54 |
| Issue number | 8 |
| Early online date | 23 Jan 2019 |
| DOIs | |
| Publication status | Published - 30 Apr 2019 |
| Externally published | Yes |
Funding
This work was supported by the National Basic Research Program of China (973 Program) under Grant No. 2015CB351905 and ‘‘111’’ Project (No. B13042).