Spatially Confined MXene/PVDF Nanofiber Piezoelectric Electronics

Zhang, Jieling; Yang, Tao; Tian, Guo; Lan, Boling; Deng, Weili; Tang, Lihua; Ao, Yong; Sun, Yue; Zeng, Wanghong; Ren, Xiarong; Li, Zhaoyu; Jin, Long; Yang, Weiqing

doi:10.1007/s42765-023-00337-w

Cited by 57 publications

(4 citation statements)

References 44 publications

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“…The O 1s spectrum of C─Ti─(OH) x , Ti─O, and C─Ti─O x (531.8, 530.8, and 529.9 eV, respectively) in Figure S3 (Supporting Information) further confirmed the bridging C─O─Ti chemical bonds in GDY-Ti 3 C 2 T x . [28] Moreover, the appearance of the D peak (≈1350 cm −1 ), G peak (≈1561 cm −1 ) and diyne linkage (≈1941 and 2148 cm −1 ) in the Raman spectrum [29,30] and the C≡C (2307 and 2366 cm −1 ) and benzene ring vibrations (2922 and 2853 cm −1 ) in the FTIR spectrum further confirmed the GDY-Ti 3 C 2 T x structure (Figure S4, Supporting Information). The successful construction of rigid GDY-Ti 3 C 2 T x architectures will facilitate stable charge/discharge behavior at high currents.…”

Section: Resultsmentioning

confidence: 59%

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti₃C₂T_x Film to Accelerate Intercalation Pseudocapacitance Kinetics

Wu,

Zhang,

Man

et al. 2024

Advanced Energy Materials

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A key challenge in flexible supercapacitor is balancing the trade‐off between high capacity and fast charging ability caused by dense structure‐induced sluggish ionic diffusion and storage dynamics. Herein, a hydrogen‐rich graphdiyne (GDY)–Ti3C2Tx electrode is reported with tunable interlayer spacing, abundant active sites, and extensive charge storage nanochannels. In particular, the GDY–Ti3C2Tx (12.6 wt.%) electrode has a remarkable volumetric capacitance (2296 F cm−3 at 1 A cm−3) and fast charging behavior (1262 F cm−3 at 50 A cm−3) resulting from the shortened transport pathways, enhanced ionic diffusion rate, and facilitated electrolyte mass transport. Moreover, an all‐solid‐state supercapacitor (ASSC) delivers a high volumetric energy density of 65.6 mWh cm−3, as well as long‐term deformable cyclic stability and high capacitance retention properties under harsh conditions. Density functional theory calculations and molecular dynamic simulation demonstrate the fast electronic responsiveness of the GDY–Ti3C2Tx heterostructure owning to the stronger H+ electrostatic attraction, lower migration resistance, and accelerated intercalation pseudocapacitance kinetics. In situ X‐ray diffraction reveals that a stable Ti─O─C bond bridged organic–inorganic heterostructure can tolerate the repeated high‐current charge/discharge cycling process. The state‐of‐the‐art ASSC delivers multiple functional outputs and shows great potential for efficient energy supply in practical applications.

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Section: Resultsmentioning

confidence: 59%

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti₃C₂T_x Film to Accelerate Intercalation Pseudocapacitance Kinetics

Wu,

Zhang,

Man

et al. 2024

Advanced Energy Materials

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“…MXene, a unique family of 2D transition metal carbides, nitrides, or carbonitrides (Ti 3 C 2 T x ), has recently gained a lot of attention as a useful filler for enhancing the dielectric properties and surface charge density of polymeric materials. 45,46 Among various polymer materials, poly(vinylidene fluoride) (PVDF) is one of the most frequently encountered negative tribo-pair materials in TENG devices. 47−49 When MXene nanosheets are added to a PVDF solution, the PVDF H or F atoms attract the MXene functional groups, and a nearly 70% increase in surface charge density has been reported.…”

Section: Introductionmentioning

confidence: 99%

“…Several functional fillers, including graphene oxide, Ag nanowires, BaTiO 3 , graphene quantum dots, multiwalled carbon nanotubes (MWCNTs), and ZnO, have been previously combined with polymers. MXene, a unique family of 2D transition metal carbides, nitrides, or carbonitrides (Ti 3 C 2 T x ), has recently gained a lot of attention as a useful filler for enhancing the dielectric properties and surface charge density of polymeric materials. , Among various polymer materials, poly(vinylidene fluoride) (PVDF) is one of the most frequently encountered negative tribo-pair materials in TENG devices. − When MXene nanosheets are added to a PVDF solution, the PVDF H or F atoms attract the MXene functional groups, and a nearly 70% increase in surface charge density has been reported . This high surface charge density can significantly contribute to the high-power output of the TENG devices.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling of MXene/PVDF-Based High-Performance Triboelectric Nanogenerators for Self-Powered Wearable Electronics

Shuvo,

Bhuiyan,

Islam

2024

ACS Appl. Electron. Mater.

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Triboelectric nanogenerator (TENG)-based wearable devices have received a lot of attention in recent years; however, the power generation of these devices is still not up to the mark. Incorporation of functionalized materials into the TENG structure can improve the power generation of triboelectric nanogenerators, which can significantly revolutionize the TENGbased self-powered wearable electronics industry. This work comprehensively analyzes 2D MXene (Ti 3 C 2 T x )-functionalized poly(vinylidene fluoride) (PVDF)-based TENGs as high-power wearable devices using electrostatics physics-based finite element modeling. Two distinct modes of TENGs are modeled: single electrode (SE-TENG) and contact separation (CS-TENG). The SE-TENG structure is studied to harvest energy from human skin directly. Hence, skin and MXene/PVDF are paired in this structure to develop devices like skin-attached sensors. The CS-TENG structure is developed with nylon and MXene/PVDF tribo-pairs for potential applications as fibers in textiles. The incorporation of MXene in PVDF leads to a significant improvement in dielectric constant and surface charge density, thereby boosting overall device performance. However, when the MXene percentage exceeds 10%, the dielectric properties of MXene/PVDF decrease due to percolation, lowering the device output. With 10% MXene incorporated PVDF, the SE-TENG structure demonstrates the highest open-circuit voltage, transferred charge, and power generation of 405 V, 221 nC, and 1.3 mW, respectively. The CS-TENG structure also shows excellent results with voltage, charge, and power profiles of 3365 V, 341 nC, and 13.07 mW, respectively. Because of these high-power outputs, as well as the flexibility and lightweight nature of MXene/PVDF, it holds tremendous possibility as a material choice for TENG-based wearable devices in the future.

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“…Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) confirm the successful introduction of the charge retention phase into the triboelectric nanopaper (Figure 2e and Figure S6). 46 X-ray diffraction (XRD) patterns reveal the crystal structure of the triboelectric nanopaper (Figure S7). The charge retention phase with the spherical fiber network exhibits a clear β-phase crystal structure at a diffraction peak of 20.8°, 47 which facilitates the retention of triboelectric charge.…”

mentioning

confidence: 99%

Phase-Directed Assembly of Triboelectric Nanopaper for Self-Powered Noncontact Sensing

Wang,

Zhu,

et al. 2024

Nano Lett.

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Spatially Confined MXene/PVDF Nanofiber Piezoelectric Electronics

Cited by 57 publications

References 44 publications

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti₃C₂T_x Film to Accelerate Intercalation Pseudocapacitance Kinetics

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti₃C₂T_x Film to Accelerate Intercalation Pseudocapacitance Kinetics

Finite Element Modeling of MXene/PVDF-Based High-Performance Triboelectric Nanogenerators for Self-Powered Wearable Electronics

Phase-Directed Assembly of Triboelectric Nanopaper for Self-Powered Noncontact Sensing

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Spatially Confined MXene/PVDF Nanofiber Piezoelectric Electronics

Cited by 57 publications

References 44 publications

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti3C2Tx Film to Accelerate Intercalation Pseudocapacitance Kinetics

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti3C2Tx Film to Accelerate Intercalation Pseudocapacitance Kinetics

Finite Element Modeling of MXene/PVDF-Based High-Performance Triboelectric Nanogenerators for Self-Powered Wearable Electronics

Phase-Directed Assembly of Triboelectric Nanopaper for Self-Powered Noncontact Sensing

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In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti₃C₂T_x Film to Accelerate Intercalation Pseudocapacitance Kinetics

In Situ Fabrication of Graphdiyne Nanoisland Anchored Ti₃C₂T_x Film to Accelerate Intercalation Pseudocapacitance Kinetics