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Investigating the role of chalcogen atom in the piezoelectric performance of PVDF/TMDCs based flexible nanogenerator

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  • Singh, Vishal
  • Meena, Deshraj
  • Sharma, Himani
  • Trivedi, Ashutosh
  • Singh, Bharti

Abstract

The current work shows first of its kind, where the systematic effect of the chalcogen atom of the Transition metal dichalcogenides (TMDCs) (MoS2, MoSSe, MoSe2) and polyvinylidene fluoride (PVDF) based composites on the piezoelectric performance of the fabricated piezonanogenerator has been investigated. Flexible PVDF/TMDCs composite thin films have been synthesized to check the effect of TMDCs as a filler in the PVDF matrix. Raman and FTIR spectroscopy revealed the enhancement of piezoelectric behavior due to increase in the polar β-phase content of PVDF after addition of TMDCs in PVDF. Out of all the fabricated piezonanogenerator, the PVDF/MoSSe based nanogenerator showed the maximum peak to peak open circuit voltage of 31.2 V and short circuit current of 1.26 μA. This enhancement was achieved just by adding TMDCs without any further treatment. The enhanced piezoelectric performance is attributed to the synergistic contributions from inherent piezoelectricity of synthesized TMDCs and intensified β-phase for the PVDF/TMDCs composites. The highest output voltage for the PVDF/MoSSe device is ascribed to the lack of reflection symmetry in MoSSe structure. The generated voltage was also used for lightning a commercial LED and for charging of a capacitor of 4.7 μF.

Suggested Citation

  • Singh, Vishal & Meena, Deshraj & Sharma, Himani & Trivedi, Ashutosh & Singh, Bharti, 2022. "Investigating the role of chalcogen atom in the piezoelectric performance of PVDF/TMDCs based flexible nanogenerator," Energy, Elsevier, vol. 239(PB).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pb:s0360544221023732
    DOI: 10.1016/j.energy.2021.122125
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    References listed on IDEAS

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    1. Wenzhuo Wu & Lei Wang & Yilei Li & Fan Zhang & Long Lin & Simiao Niu & Daniel Chenet & Xian Zhang & Yufeng Hao & Tony F. Heinz & James Hone & Zhong Lin Wang, 2014. "Piezoelectricity of single-atomic-layer MoS2 for energy conversion and piezotronics," Nature, Nature, vol. 514(7523), pages 470-474, October.
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