Electronegative polyvinylidene fluoride/C60 composite nanofibers for performance enhancement of triboelectric nanogenerators

Sim, Dong-Jun; Choi, Geon‐Ju; Sohn, Sang‐Hyun; Park, Il‐Kyu

doi:10.1016/j.jallcom.2021.162805

Cited by 15 publications

(8 citation statements)

References 37 publications

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“…The diffraction characteristic peaks occurring at 2θ ≈ 18.4 and 20.5° correspond to both the α-crystallized phase and β-crystallized phase of the PVDF, respectively. The addition of TM compared to pure PVDF nanofiber films can narrow the diffraction peak of PVDF/TM composite nanofiber films at 2θ ≈ 18.4° . However, when the concentration of the TM filler gradually increases, the β-characteristic surface decreases, indicating that the β-crystallinity of the compound polymer is negatively affected, thus hindering the crystallinity of the PVDF polymer main chain.…”

Section: Resultsmentioning

confidence: 99%

“…The addition of TM compared to pure PVDF nanofiber films can narrow the diffraction peak of PVDF/TM composite nanofiber films at 2θ ≈ 18.4°. 36 However, when the concentration of the TM filler gradually increases, the β-characteristic surface decreases, indicating that the β-crystallinity of the compound polymer is negatively affected, thus hindering the crystallinity of the PVDF polymer main chain. This implies that the appropriate addition of TM can facilitate the production of βphase PVDF crystals.…”

Section: Fiber Morphological Characterization and Xdr And Ftir Testsmentioning

confidence: 99%

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Improvement of Output Performance of the TENG Based on PVDF by Doping Tourmaline

Pan,

Jin

2024

ACS Sustainable Chem. Eng.

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This work introduces a novel nanomaterial to form microcapacitors for the purpose of accumulating triboelectric charges and enhancing the output properties of a triboelectric nanogenerator (TENG). Incorporating tourmaline (TM) into electrospun poly-(vinylidene fluoride) (PVDF) nanofibers as a tribo-negative layer constructs a new TENG based on PVDF/TM nanofibers. For the prepared TENG with 0.3 wt % TM nanofiller, the power density reaches as high as 107 mW/m 2 at the matched 4 MΩ external load, a remarkable 156% improvement over the power density of the pure PVDF nanogenerator; at the same time, the open-circuit voltage can reach 267 V. PVDF/TM nanofibers increase the output performance of the TENG by 2.1 times. By tapping the TENG gently with a human finger, it can directly light 13 LEDs and the TENG successfully powers an electronic watch by harvesting energy. In the fibers, the PVDF polymer chains form a cooperative and mutual alignment with the TM owing to electrospinning, facilitating the highly polar crystalline β-phase formation of PVDF. In addition, the addition of TM nanofillers enhances the mechanical stability as well as mechanical properties of PVDF nanofiber films. The high-performance TENG possesses high application potential in the rapidly developing society to be a self-powered system to provide efficient and renewable energy for portable electronic devices.

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Section: Resultsmentioning

confidence: 99%

Section: Fiber Morphological Characterization and Xdr And Ftir Testsmentioning

confidence: 99%

Improvement of Output Performance of the TENG Based on PVDF by Doping Tourmaline

Pan,

Jin

2024

ACS Sustainable Chem. Eng.

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“…Thus, the β phase of PVDF has better triboelectrification and triboelectric charge retention. [158] To enhance the triboelectric charge retention and TENG output by boosting the β phase in PVDF, researchers tested a variety of composite films such as 2D materials, [112,[159][160][161][162][163][164][165][166][167][168] silver nanowire, [145] Fe 3 O 4 nanoparticles, [169] BaTiO 3 , [170] Bi 2 WO 6 , [171] Si 3 N 4 , [172] fullerenes, [173] ZnO, [174] active carbon, [175,176] macromolecules, [177,178] ZrO 2 , [179] ZnSnO 3 , [180] and PVDF surface structures. [181,182] In addition, it was found that a carbon-based polymer composite can reduce the triboelectric charge decay because of its great charge storage capacity.…”

Section: Composite Film As Triboelectric Layermentioning

confidence: 99%

An Advanced Strategy to Enhance TENG Output: Reducing Triboelectric Charge Decay

et al. 2023

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The Internet of Things (IoT) is poised to accelerate the construction of smart cities. However, it requires more than 30 billion sensors to realize the IoT vision, posing great challenges and opportunities for industries of self‐powered sensors. Triboelectric nanogenerator (TENG), an emerging new technology, is capable of easily converting energy from surrounding environment into electricity, thus TENG has tremendous application potential in self‐powered IoT sensors. At present, TENG encounters a bottleneck to boost output for large‐scale commercial use if just by promoting triboelectric charge generation, because the output is decided by the triboelectric charge dynamic equilibrium between generation and decay. To break this bottleneck, the strategy of reducing triboelectric charge decay to enhance TENG output is focused. First, multiple mechanisms of triboelectric charge decay are summarized in detail with basic theoretical principles for future research. Furthermore, recent advances in reducing triboelectric charge decay are thoroughly reviewed and outlined in three aspects: inhibition and application of air breakdown, simultaneous inhibition of air breakdown and triboelectric charge drift/diffusion, and inhibition of triboelectric charge drift/diffusion. Finally, challenges and future research focus are proposed. This review provides reference and guidance for enhancing TENG output.

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“…via branching nano fibres) are also likely to boost contact area; thereby, boosting textile TENG output. Some progress has already been made in this direction by using electrospinning to create a greater density of fibre contacts [49][50][51][52][53][54][55][56][57][58][59]. A comprehensive review of electrospun nanofibre based TENGs for wearable applications is given in Babu et al [59].…”

Section: Limitations and Opportunities In The Tribology And Contact O...mentioning

confidence: 99%

Reflections on boosting wearable triboelectric nanogenerator performance via interface optimisation

Gokhool

Bairagi

Kumar

et al. 2023

Results in Engineering

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Electronegative polyvinylidene fluoride/C60 composite nanofibers for performance enhancement of triboelectric nanogenerators

Cited by 15 publications

References 37 publications

Improvement of Output Performance of the TENG Based on PVDF by Doping Tourmaline

Improvement of Output Performance of the TENG Based on PVDF by Doping Tourmaline

An Advanced Strategy to Enhance TENG Output: Reducing Triboelectric Charge Decay

Reflections on boosting wearable triboelectric nanogenerator performance via interface optimisation

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