CNT/PVDF Flexible Composite Electrode for Piezoelectric Nanogenerator
Paper ID : 1356-ICNS
Zohreh Moarref *1, Nahid Hemmatinejad2, Majid Montazer2, Roohollah Bagherzadeh3
1Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran
2Textile Engineering Department, Amirkabir university of technology, Tehran, Iran
3ATMT Research Institute, Textile Engineering Department, Amirkabir university of technology, Tehran, Iran
In this research single wall carbon nanotubes (CNT)/polyvinylidene fluoride (PVDF) flexible electrodes were produced using different concentration of single walled CNT and PVDF. In this regard, dispersions of CNT in polymer solution of PVDF and DMF/acetone (1:1) as solvents were prepared and stabilized with 0.2 % Triton X-100. The above solutions were then spin-coated, cured at 150 ºC for 2 h and cut to 0.5cm×2.5cm electrode ribbons. An electrospun PVDF/ZnO (PZ) layer cut to 1.0 cm×3.0 cm used as piezo-active bed nanogenerator. To investigate the electrical conductivity, piezoelectric sensitivity and crystallinity of the prepared samples, Keithley, piezoelectric test and attenuated total reflectance analysis (ATR) were used. According to the results, the sample with 20 % PVDF and 1 % CNT showed more electrical conductivity and piezoelectric sensitivity. The percolation threshold estimated around 1 % of CNT which is close to the previous reports. This synergistic effect of PVDF piezoelectric property, flexibility and biocompatibility with CNT conductivity make these electrodes a promising approach for designing wearable and flexible high-efficiency NGs.
CNT; PVDF; Flexible Electrode; Piezoelectric Nanogenerator
Status : Abstract Accepted (Poster Presentation)