Flexible, humidity- and contamination-resistant superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications

Sardana, Sagar; Sharma, Vaishali; Beepat, Kevin Gurbani; Sharma, Davinder Pal; Chawla, Amit Kumar; Mahajan, Aman

doi:10.1039/d3nr04537d

Cited by 6 publications

(1 citation statement)

References 53 publications

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“…The i-TENG could operate at various contact frequencies (Figure b). Notably, the output voltage increased from 80 to 110 V as the applied frequency increased from 1 to 5 Hz; this is attributable to the accumulation of the remaining charges due to incomplete electrical neutralization at high-frequency operations. , The operation of the i-TENG was quite stable. Only a slight decrease in V oc (approximately 10% reduction) occurred after 2 weeks, even without any encapsulation (Figure c).…”

Section: Resultsmentioning

confidence: 98%

Unveiling the Impact of Tailoring Ionic Conductor Characteristics on the Performance of Wearable Triboelectric Nanogenerators

Han,

Kim,

Moon

2024

ACS Appl. Mater. Interfaces

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This work reveals the correlation between the performance of triboelectric nanogenerators (TENGs) and the characteristics of deformable solid-state ionic conductors (referred to as ionogels). For this purpose, we modify ionogel characteristics by incorporating additional plasticizers (propylene carbonate) and solid salts (lithium bis(trifluoromethylsulfonyl)imide) into the ionogels. We conclude that the high capacitance of the ionogel is crucial for achieving a high-performance TENG platform. The optimized ionogel-based TENG (i-TENG) exhibits a power density of ∼372.4 mW·m–2 (based on 95 V and 36 mA·m–2 outputs) with outstanding long-term stability over 2 weeks. Additionally, successful demonstrations of wearable nanogenerators are performed by leveraging the high stretchability (up to ∼1000%) and optical transparency (∼90%) of the ionogels. Overall, the results provide insight into the design of deformable ionic conductors for high-performance, reliable, and wearable TENGs.

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Section: Resultsmentioning

confidence: 98%

Unveiling the Impact of Tailoring Ionic Conductor Characteristics on the Performance of Wearable Triboelectric Nanogenerators

Han,

Kim,

Moon

2024

ACS Appl. Mater. Interfaces

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2D/0D Heterojunction Interface with Photovoltaic Enhancement and Stabilization for Label‐Free Exosome Biosensor

Wang,

Zhong,

Lee

et al. 2024

Adv Funct Materials

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The selection and design of interface materials as the key to interface engineering is crucial for the excellent performance of optoelectronic devices, enabling multi‐functional integration at interfaces. MXene has been extensively employed in optoelectronic devices as an interface material. The primary drawback in interfacial applications, however, is MXene's vulnerability to oxidation in hot, humid environments, which severely reduces photovoltaic performance. Based on hetero‐interface engineering, this work offers a novel 2D‐semiconductor/0D‐plasma heterojunction MXene‐TA‐Au‐PEG (MTAP) as a high‐performance and multifunctional photovoltaic interfacial material. MTAP not only effectively protects MXene against stacking and spontaneous oxidation, but also exhibits excellent optoelectronic properties and interfacial antifouling capability. Moreover, MTAP is employed to enhance SPR spectroscopy, allowing for the direct, real‐time detection of tumor cell exosomes with LODs as low as 0.28 particles mL−1. MTAP effectively addresses the conventional “three S” requirements for sensors in terms of sensitivity, specificity, and stability by integrating photoelectric enhancement, interfacial antifouling, and oxidative stabilization characteristics. Finally, the results of serum sample analysis showed the sensor has some potential application value in clinical diagnosis. This study offers novel perspectives on the fabrication of 2D/0D heterojunctions using semiconductor and plasma materials, with the aim of developing improved sensing chips.

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Flexible, Multifunctional, and Durable MXene/CeO₂/Cellulose Nanofibers for Efficient Energy Conversion‐Storage Capacity Toward Self‐Powered Monitoring of Ammonia

Sardana,

Mahajan,

Mishra

et al. 2024

Adv Materials Technologies

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The appeal of wearable gas sensors for Internet of Things (IoTs) necessitates flexible sensory units along with sustainable source of energy supply. The key factors required for emergence of these devices are choice of electroactive materials, flexibility, skin‐compatibility, and robustness against harsh environment. Considering this, the multifunctional MXene/CeO2 composites reinforced with electrospun cellulose nanofibers are constructed and investigated for energy conversion, energy storage, and gas sensing applications. Among the synthesized composites, MXene/CeO2 (10 wt%) coated onto cellulose nanofibers outperformed triboelectric nanogenerator (TENG) with open‐circuit voltage of 160 V and supercapacitor (SC) specific capacitance of 388.98 F g−1 and sensing response of 212% toward 10 ppm NH3. The fabricated devices show promising outlooks against practical challenges of influence of humid conditions and different bending states. Lastly, the self‐chargeable device is integrated and the practical implications of charging of SC through TENG and its utilization in sensor powering is demonstrated. The above findings are expected to contribute significantly in envisioning development of wearable health monitors, combining the flexibility features and facilitating autonomous measurements of NH3 pollutant and biomarker.

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Flexible, humidity- and contamination-resistant superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications

Abstract: Superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications are fabricated.

Cited by 6 publications

References 53 publications

Unveiling the Impact of Tailoring Ionic Conductor Characteristics on the Performance of Wearable Triboelectric Nanogenerators

Unveiling the Impact of Tailoring Ionic Conductor Characteristics on the Performance of Wearable Triboelectric Nanogenerators

2D/0D Heterojunction Interface with Photovoltaic Enhancement and Stabilization for Label‐Free Exosome Biosensor

Flexible, Multifunctional, and Durable MXene/CeO₂/Cellulose Nanofibers for Efficient Energy Conversion‐Storage Capacity Toward Self‐Powered Monitoring of Ammonia

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Flexible, humidity- and contamination-resistant superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications

Abstract: Superhydrophobic MXene-based electrospun triboelectric nanogenerators for distributed energy harvesting applications are fabricated.

Cited by 6 publications

References 53 publications

Unveiling the Impact of Tailoring Ionic Conductor Characteristics on the Performance of Wearable Triboelectric Nanogenerators

Unveiling the Impact of Tailoring Ionic Conductor Characteristics on the Performance of Wearable Triboelectric Nanogenerators

2D/0D Heterojunction Interface with Photovoltaic Enhancement and Stabilization for Label‐Free Exosome Biosensor

Flexible, Multifunctional, and Durable MXene/CeO2/Cellulose Nanofibers for Efficient Energy Conversion‐Storage Capacity Toward Self‐Powered Monitoring of Ammonia

Contact Info

Product

Resources

About

Flexible, Multifunctional, and Durable MXene/CeO₂/Cellulose Nanofibers for Efficient Energy Conversion‐Storage Capacity Toward Self‐Powered Monitoring of Ammonia