Interfacial piezoelectric polarization locking in printable Ti3C2Tx MXene-fluoropolymer composites

Shepelin, Nick A.; Sherrell, Peter C.; Skountzos, Emmanuel N.; Goudeli, Eirini; Zhang, Jizhen; Lussini, Vanessa C.; Imtiaz, Beenish; Usman, Ken Aldren S.; Dicinoski, Greg W.; Shapter, Joseph G.; Razal, Joselito M.; Ellis, Amanda

doi:10.1038/s41467-021-23341-3

Cited by 89 publications

(52 citation statements)

References 58 publications

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“…This suggests that MXene may influence the polarization properties of neighboring PVDF molecules, inducing a strong, localized alignment of dipole moments, and maintaining a weaker alignment in more distant regions of the PVDF general matrix. A similar localized enhancement of the piezoelectric properties has been reported for BaTiO 3 /PVDF nanocomposite, with a hypothesized mechanism of polarization locking described by Shepelin et al [32] We speculate that such localized high-generation sites, coupled with the weaker general effect is responsible for the bulk improvement in the output performance observed in device-level characterization (Figure 4).…”

Section: Resultssupporting

confidence: 87%

“…A similar localized enhancement of the piezoelectric properties has been reported for BaTiO 3 /PVDF nanocomposite, with a hypothesized mechanism of polarization locking described by Shepelin et al. [ 32 ] We speculate that such localized high‐generation sites, coupled with the weaker general effect is responsible for the bulk improvement in the output performance observed in device‐level characterization (Figure 4).…”

Section: Resultssupporting

confidence: 86%

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Enhancing Mechanical Energy Transfer of Piezoelectric Supercapacitors

Jadhav

Pham

Padwal

et al. 2021

Adv Materials Technologies

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energy storage capabilities. A range of energy sources, including piezoelectric, pyroelectric, triboelectric, have been recently emphasized for energy harvesting from natural processes. [3][4][5][6] Typically, energy harvesting and storage systems can be integrated either extrinsically using electrical circuitries, or intrinsically via engineering the device structure with functionalized materials. [3,7] However, extrinsically integrated devices have high manufacturing cost due to the need of complex power management systems (rectifier), which reduces integration density. [8,9] Therefore, it is highly desirable to improve the integration level and minimize unnecessary energy loss in the external circuits between energy harvesting and storage devices.Recently, rectification free piezoelectric supercapacitors (PSCs) as an integrated device have been developed, which not only maintains the integration density of the devices but also provides continuous energy supply. The operation principle of PSC is based on the incorporation of piezoelectric materials in place of separators commonly used in supercapacitors and then harvesting the energy internally instead of relying on external power supply. In general, PSC is constructed using two electrodes, piezoelectric-separator and gel-electrolyte [10] where piezoelectric separator converts ubiquitously irregular and low-frequency mechanical vibration into electricity and simultaneously stores at the supercapacitive electrodes. Polyvinylidene fluoride (PVDF) film is commonly used in PSCs due to their excellent piezoelectric and mechanical properties. [11,12] The interfacial energy conversion efficiency of bare PVDF (electrically nonpolarized) in PSC, however, is poor and difficult to translate for real-time operation of electronic devices. [13] Among various approaches used to improve the performance, the PVDF matrix with fillers is an efficient and effective method. [13][14][15][16][17][18] For instance, Song et al. developed a rectification free, PVDF-based PSC. Simple carbon cloth was used as the electrode, with a gel electrolyte composed of PVA and H 2 SO 4 . The device achieved an aerial capacitance of 357.6 F m -2 , energy density of 0.049 mWh cm −2 and the power density 0.44 mW cm −2 . Kartiken et al. [19] embedded siloxene in to PVDF nanofibers to influence the structure and induce the β phase of PVDF, improving energy generation performance relative to bare PVDF. The fabricated device of the siloxene based supercapacitor achieved an areal capacitance of 28.98 mF cm -2The expected widespread use of wearable and other low-power healthcare devices has triggered great interest in piezoelectric materials as a promising energy harvester. However, traditional piezoelectric materials suffer from poor interfacial energy transfer when used in self-charging power cells. Herein, piezoelectric supercapacitors (PSCs) are engineered using MXene-incorporated polymeric piezo separator and MXene (Ti 3 C 2 T x ) multilayered sheets as electrodes. The MXene-blended polymer film showed ...

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 86%

Enhancing Mechanical Energy Transfer of Piezoelectric Supercapacitors

Jadhav

Pham

Padwal

et al. 2021

Adv Materials Technologies

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“…Although MXene-based fibers have demonstrated excellent electrical and electrochemical properties, there are still more properties and applications that are yet to be explored. For instance, our recent collaborative work revealed polarization locking phenomena of poly(vinylidene fluoride- co -trifluoroethylene) (PVDF-TrFE) perpendicular to the basal plane of 2D Ti 3 C 2 T x nanosheets, driven by strong electrostatic interactions, enabling exceptional energy harvesting performance . Additionally, control of optoelectronic properties of MXene may permit formation of fibers with various colors.…”

Section: Discussionmentioning

confidence: 99%

“…For instance, our recent collaborative work revealed polarization locking phenomena of poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) perpendicular to the basal plane of 2D Ti 3 C 2 T x nanosheets, driven by strong electrostatic interactions, enabling exceptional energy harvesting performance. 91 Additionally, control of optoelectronic properties of MXene may permit formation of fibers with various colors. For instance, the plasmonic extinction bands for Ti 3 C 2 T x , Ti 2 CT x , and Ti 1.6 Nb 0.4 CT x centered at 800, 550, and 480 nm are electrochemically tunable to 630, 470, and 410 nm, respectively, whereas Ti 3 CNT x shows a reversible change in transmittance in the wide visible range.…”

Section: Discussionmentioning

confidence: 99%

Development and Applications of MXene-Based Functional Fibers

Qin

Usman

Hegh

et al. 2021

ACS Appl. Mater. Interfaces

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The increasing interest toward wearable and portable electronic devices calls for multifunctional materials and fibers/yarns capable of seamless integration with everyday textiles. To date, one particular gap inhibiting the development of such devices is the production of robust functional fibers with improved electronic conductivity and electrochemical energy storage capability. Recent efforts have been made to produce functional fibers with 2D carbides known as MXenes to address these demands. Ti 3 C 2 T x MXene, in particular, is known for its metallic conductivity and high volumetric capacitance, and has shown promise for fibers and textile-based devices when used either as an additive, coating or the main fiber component. In this spotlight article, we highlight the recent exciting developments in our diverse efforts to fabricate MXene functionalized fibers, along with a critical evaluation of the challenges in processing, which directly affect macroscale material properties and the performance of the subsequent prototype devices. We also provide our assessment of observed and foreseen challenges of the current manufacturing methods and the opportunities arising from recent advances in the development of MXene fibers and paving future avenues for textile design and practical use in advanced applications.

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“…d) The surface charge generated by different piezoelectric energy harvesters at 2 Hz for 60 compression cycles. b-d) Reproduced under the terms of the CC-BY Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0) [87]. Copyright 2021, The Authors, published by Springer Nature.…”

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confidence: 99%

MXenes for Energy Harvesting

et al. 2022

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Energy harvesting modules play an increasingly important role in the development of autonomous self‐powered microelectronic devices. MXenes (i.e., 2D transition metal carbide/nitride) have recently emerged as promising candidates for energy applications due to their excellent electronic conductivity, large specific surface area, and tunable properties. Herein, a perspective on using MXenes to harvest energy from various sources in the environment is presented. First, the characteristics of MXenes that facilitate energy capturing are systematically introduced and the preparation strategies of MXenes and their derived nanostructures tailored toward such applications are summarized. Subsequently, the harvesting mechanism of different energy sources (e.g., solar energy, thermoelectric energy, triboelectric energy, piezoelectric energy, salinity‐gradient energy, electrokinetic energy, ultrasound energy, and humidity energy) are discussed. Then, the recent progress of MXene‐based nanostructures in energy harvesting, as well as their applications, is introduced. Finally, opinions on the existing challenges and future directions of MXene‐based nanostructure for energy harvesting are presented.

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Interfacial piezoelectric polarization locking in printable Ti3C2Tx MXene-fluoropolymer composites

Cited by 89 publications

References 58 publications

Enhancing Mechanical Energy Transfer of Piezoelectric Supercapacitors

Enhancing Mechanical Energy Transfer of Piezoelectric Supercapacitors

Development and Applications of MXene-Based Functional Fibers

MXenes for Energy Harvesting

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