Transparent flexible graphene quantum dot-(PVDF-HFP) piezoelectric nanogenerator

Badatya, Simadri; Kumar, Anil; Sharma, Charu; Srivastava, Avanish Kumar; Chaurasia, Jamana Prasad; Gupta, Manoj

doi:10.1016/j.matlet.2021.129493

Cited by 59 publications

(27 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[24,25] Meanwhile, PVDF-HFP is also a powerful piezoelectric material owing to its ferroelectric β phase. [26][27][28][29] Nonetheless, with the increasing number of electronic devices and denser device integration, typical PVDF-HFP-based nanogenerators are not enough to meet the escalating requirements of energy consumption. A promising way that can increase the electrical output of PVDF-HFP is to modify the physical and chemical properties of PVDF-HFP by adding functional fillers.…”

Section: Introductionmentioning

confidence: 99%

Stretchable, Breathable, and Stable Lead‐Free Perovskite/Polymer Nanofiber Composite for Hybrid Triboelectric and Piezoelectric Energy Harvesting

et al. 2022

View full text Add to dashboard Cite

Halide‐perovskite‐based mechanical energy harvesters display excellent electrical output due to their unique ferroelectricity and dielectricity. However, their high toxicity and moisture sensitivity impede their practical applications. Herein, a stretchable, breathable, and stable nanofiber composite (LPPS‐NFC) is fabricated through electrospinning of lead‐free perovskite/poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVDF‐HFP) and styrene–ethylene–butylene–styrene (SEBS). The Cs3Bi2Br9 perovskites serve as efficient electron acceptors and local nucleating agents for the crystallization of polymer chains, thereby enhancing the electron‐trapping capacity and polar crystalline phase in LPPS‐NFC. The excellent energy level matching between Cs3Bi2Br9 and PVDF‐HFP boosts the electron transfer efficiency and reduces the charge loss, thereby promoting the electron‐trapping process. Consequently, this LPPS‐NFC‐based energy harvester displays an excellent electrical output (400 V, 1.63 µA cm−2, and 2.34 W m−2), setting a record of the output voltage among halide‐perovskite‐based nanogenerators. The LPPS‐NFC also exhibits excellent stretchability, waterproofness, and breathability, enabling the fabrication of robust wearable devices that convert mechanical energy from different biomechanical motions into electrical power to drive common electronic devices. The LPPS‐NFC‐based energy harvesters also endure extreme mechanical deformations (washing, folding, and crumpling) without performance degradation, and maintain stable electrical output up to 5 months, demonstrating their promising potential for use as smart textiles and wearable power sources.

show abstract

Section: Introductionmentioning

confidence: 99%

Stretchable, Breathable, and Stable Lead‐Free Perovskite/Polymer Nanofiber Composite for Hybrid Triboelectric and Piezoelectric Energy Harvesting

et al. 2022

View full text Add to dashboard Cite

show abstract

“…[ 181 ] Recently, piezoelectric GRMs reinforced polymers have been studied with applications ranging from nanogenerators, wearable electronics, and real‐time biomedical monitoring. [ 182–186 ] Huang et al. [ 185 ] fabricated poly(vinylidene fluoride) (PVDF)/graphene composite coatings, aiming at achieving mass‐producible sensors on commercially available PVDF fabrics.…”

Section: The Fundamentals Of 2d Enabled Smart Materialsmentioning

confidence: 99%

“…[181] Recently, piezoelectric GRMs reinforced polymers have been studied with applications ranging from nanogenerators, wearable electronics, and realtime biomedical monitoring. [182][183][184][185][186] Huang et al [185] fabricated poly(vinylidene fluoride) (PVDF)/graphene composite coatings, aiming at achieving mass-producible sensors on commercially available PVDF fabrics. The enriched electroactive phase was obtained from the water/graphene phase separation, which led to a directional orientation of the structural units of PVDF.…”

Section: Piezoelectric Materialsmentioning

confidence: 99%

A Review on Printing of Responsive Smart and 4D Structures Using 2D Materials

Cataldi

Liu

Bissett

et al. 2022

Adv Materials Technologies

View full text Add to dashboard Cite

3D printing is revolutionizing the manufacturing sector due to the myriad of materials and techniques available. Furthermore, it allows decentralized production sites for both industry and the public. However, it is restricted to static structures that cannot react to external stimuli or adapt to the environment and are, therefore, not suitable for functional and motile parts. Recently, two approaches are proposed to give dynamism to 3D printed structures: the printing of “stimulus‐responsive” (a.k.a. smart) materials and “4D printing,” the first implying features change due to a stimulus while the second indicating the time evolution of properties after a stimulus activation. Nanomaterials, particularly 2D nanomaterials, exhibit a broad and distinctive combination of features. Thus, they are highly effective at enabling this dynamism due to their morphological, optoelectrical, and mechanical properties. This review summarizes recent advances in 3D/4D printing of smart deformable and stimuli‐responsive materials which utilize 2D nanomaterials. The benefits of 2D materials in this framework are summarized, and how to translate their potential into 3D/4D printing is also discussed. The most promising achievements to date are deformable piezoresistive materials for strain sensing, Joule heaters, and actuators. Future advancements and possible upcoming application areas are finally proposed.

show abstract

“…To meet the high requirements and increasing demands of emerging applications, a kind of flexible PENG (FPENG) based on piezoelectric polymers [such as poly(vinylidene fluoride) (PVDF)] and their derivatives [such as poly(VDF- co -hexafluoropropylene copolymer) (PVDF-HFP)] has been intensively investigated in recent decades owing to its huge advantages of low material density, mechanical flexibility, biocompatibility, economic cost, and good processability. − However, their output performances are often limited because neat piezoelectric polymers in nature generally have lower inherent piezoelectricity than piezoelectric ceramics. − Different from the piezoelectricity in ceramics arising from the non-centrosymmetric nature and asymmetric charge surroundings, the piezoelectric phenomenon of polymers stems from the orientation and distribution of polymer chains containing molecular dipoles in the bulk material. To achieve strong piezoelectric effects, piezoelectric polymers have to be treated for reorienting the molecular dipoles by electrical poling in a high electric field or thermal annealing at a high temperature. − These polarization techniques are effective and valuable for the enhancement of piezoelectric effects but also easily cause the introduction of mechanical defects due to the rigorous conditions.…”

Section: Introductionmentioning

confidence: 99%

Quantum Dot Hybridization of Piezoelectric Polymer Films for Non-Transfer Integration of Flexible Biomechanical Energy Harvesters

Long

Lai

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

This work presents a low-temperature engineering strategy, from quantum dot (QD) synthesis to fabrication of a hybrid from a homogeneous dispersion to thermal annealing with elaborate use of a small organic molecule dopamine, for achieving a kind of ZnO QD-hybridized piezoelectric polymer film directly integrated into a flexible electrode and a plastic substrate. This strategy is the key for non-transfer assembly of flexible piezoelectric nanogenerators (FPENGs) with both mechanical robustness and high electrical performance via direct lamination. The rational addition of dopamine plays multiple roles of (1) significantly decreasing the size of ZnO particles to a QD level (3.77 nm), (2) formation of a stable and homogeneous dispersion of a ZnO QDs/piezoelectric polyvinylidene fluoride-co-hexafluoropropylene copolymer for uniform hybridization of a piezoelectric film, and (3) increment of the piezoelectric phase via induced crystallization at a low annealing temperature. This dopamine-assisted low-temperature annealing strategy for a hybrid piezoelectric film with a high d33 value (∼31.56 pC/N, 30.56% larger than that of a pure piezoelectric polymer film) required no additional high-voltage polarization treatment and effectively avoided the delamination, distortion, or melt phenomenon between the piezoelectric layer, flexible electrode, and plastic protective layer caused by the high temperature and thermal stress. The obtained FPENGs showed significantly enhanced output performance and mechanical robustness under repeated impact and large amounts of strain conditions. Their specific output voltage and charge density were stably maintained at 7.16 V and 2.40 nC/cm2, which were 30.7 and 50.0% higher than those of FPENGs based on a pure piezoelectric polymer film, respectively. They were further used as biomechanical energy harvesters for generating electricity to charge capacitor energy storage devices for power electronics and self-powered sensors for visual motion-detecting systems, indicating their promising applications in both wearable technology and smart homes.

show abstract

Transparent flexible graphene quantum dot-(PVDF-HFP) piezoelectric nanogenerator

Cited by 59 publications

References 17 publications

Stretchable, Breathable, and Stable Lead‐Free Perovskite/Polymer Nanofiber Composite for Hybrid Triboelectric and Piezoelectric Energy Harvesting

Stretchable, Breathable, and Stable Lead‐Free Perovskite/Polymer Nanofiber Composite for Hybrid Triboelectric and Piezoelectric Energy Harvesting

A Review on Printing of Responsive Smart and 4D Structures Using 2D Materials

Quantum Dot Hybridization of Piezoelectric Polymer Films for Non-Transfer Integration of Flexible Biomechanical Energy Harvesters

Contact Info

Product

Resources

About