Fabrication of PVDF-transition metal dichalcogenides based flexible piezoelectric Nanogenerator for energy harvesting applications

Singh, Vishal; Singh, Bharti

doi:10.1016/j.matpr.2020.02.073

Cited by 13 publications

(8 citation statements)

References 17 publications

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“…As shown in Fig. 2a, the content of β-phase is calculated to be 40% for the PVDF electrolyte 37 . In contrast, with increasing the amount of MSs, the β-phase PVDF is increased to 52%, 63.77% and 77% for PVMS-10, PVMS-15 and PVMS-20 electrolyte, respectively.…”

Section: Resultsmentioning

confidence: 93%

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Phase regulation to obtain dense composite polymer-based electrolytes for high-voltage solid-state lithium metal batteries

Fang

Jiao

et al. 2023

Preprint

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Solid polymer electrolytes are accepted as promising candidates for solid-state lithium metal batteries due to the flexibility and large-scale manufacturability. In particular, poly(vinylidene fluoride)-based polymer electrolytes with unique “salt-polymer-trace residual solvent” configuration exhibit attractive for batteries’ room-temperature operations. However, the porous structure and the still limited ionic conductivity prevent their further advancement. Herein, we proposed a phase regulation strategy to disrupt the symmetry of PVDF chains by coupling with ferroelectric MoSe2 sheets, in which the asymmetric adsorption interactions result in the formation of all trans (TTTT) conformation of PVDF and dense structure of composite electrolyte. The developed β-phase-rich electrolyte provides a high dielectric environment to optimize the solvation structures that form abundant solvent-separated ion pairs, achieving high ionic conductivity (6.5×10− 4 S cm− 1) with low activation energy (0.07 eV). Further, the in-situ reactions between MoSe2 and Li metal construct fast conductor Li2Se in the interfaces, which significantly enhances the interfacial transport kinetics and electrochemical stability. Therefore, the Li||Li cells achieve record cycling of 480 hours at 1 mA cm− 2, and the Li||LiNi0.8Co0.1Mn0.1O2 full cells show ultra-long lifespan of 2000 times at 3C. This work provides an encouraging strategy contributing to large-scale production towards their practical applications.

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Section: Resultsmentioning

confidence: 93%

“…Each monomer unit of PVDF has a strong dipole moment due to the electronegativity of F atoms as compared to H and C atoms 36,37 . Speci cally, the α-phase consists of alternate trans and gauche conformation (TGTG), which is non-polar due to the anti-parallel arrangement of the dipoles.…”

Section: Resultsmentioning

confidence: 99%

Phase regulation to obtain dense composite polymer-based electrolytes for high-voltage solid-state lithium metal batteries

Fang

Jiao

et al. 2023

Preprint

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“…60 MoSe 2 and MoS 2 were also synthesized using this method. 61 In order to synthesize MoS 2 , (NH 4 ) 2 -MoO 4 $4H 2 O and CH 4 N 2 S were dissolved in deionized water, then stirred with a magnetic stirrer at room temperature. Subsequently, the solution was transferred to an autoclave beaker which was sealed inside.…”

Section: Preparation Methods Of Tmdsmentioning

confidence: 99%

Research progress of transition-metal dichalcogenides for the hydrogen evolution reaction

Deng,

Li,

Huang

et al. 2023

J. Mater. Chem. A

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“…To take a step further, many researchers are focusing on the fabrication of nanogenerators based on the composite of 2D materials with polymers ( Singh and Singh, 2020 ). The number of research publications is increasing at a great rate in this field.…”

Section: Introductionmentioning

confidence: 99%

Recent trends in 2D materials and their polymer composites for effectively harnessing mechanical energy

Rana

Singh

2022

iScience

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Summary Self-powered wearable devices, with the energy harvester as a source of energy that can scavenge the energy from ambient sources present in our surroundings to cater to the energy needs of portable wearable electronics, are becoming more widespread because of their miniaturization and multifunctional characteristics. Triboelectric and piezoelectric nanogenerators are being explored to harvest electrical energy from the mechanical vibrations. Integration of these two effects to fabricate a hybrid nanogenerator can further enhance the output efficiency of the nanogenerator. Here, we have discussed the importance of 2D materials which plays an important role in the fabrication of nanogenerators because of their distinct characteristics, such as, flexibility, mechanical stability, nontoxicity, and biodegradability. This review mainly emphasizes the piezoelectric, triboelectric, and hybrid nanogenerator based on the 2D materials and their van der Waals heterostructure, as well as the effect of polymer-2D composite on the output performance of the nanogenerator.

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Fabrication of PVDF-transition metal dichalcogenides based flexible piezoelectric Nanogenerator for energy harvesting applications

Cited by 13 publications

References 17 publications

Phase regulation to obtain dense composite polymer-based electrolytes for high-voltage solid-state lithium metal batteries

Phase regulation to obtain dense composite polymer-based electrolytes for high-voltage solid-state lithium metal batteries

Research progress of transition-metal dichalcogenides for the hydrogen evolution reaction

Recent trends in 2D materials and their polymer composites for effectively harnessing mechanical energy

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