Metallic MXenes: A new family of materials for flexible triboelectric nanogenerators

Dong, Yongchang; Mallineni, Sai Sunil Kumar; Maleski, Kathleen; Behlow, Herbert; Mochalin, Vadym; Rao, Apparao M.; Gogotsi, Yury; Podila, Ramakrishna

doi:10.1016/j.nanoen.2017.11.044

Cited by 282 publications

(238 citation statements)

References 45 publications

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“…MXenes, a family of 2D transition metal carbides and nitrides, were developed by a group of researchers from Drexel University. [13][14][15][16][17] MXenes have been reported to be highly efficient electrode materials for energy conversion devices (such as triboelectric nanogenerators [18] and water splitting devices [19] ) and energy storage devices (including supercapacitors [20] and batteries [21] ) as well as for other applications (e.g., capacitive desalination [22] and electromagnetic interference shielding [23] ). The MAX phases have the form M n+1 AX n (n = 1-3), where "M" represents a transition metal, "A" usually represents a group IIIA or IVA element (such as Al, Ga, Si, or Ge), and "X" represents carbon and/ or nitrogen.…”

Section: Introductionmentioning

confidence: 99%

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

Tang

Guo

et al. 2018

Advanced Energy Materials

359

184

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Tremendous efforts are devoted to developing advanced electrode materials with superior electrochemical performance, high energy density, and high power density for energy storage and conversion. Two‐dimensional (2D) materials, owing to their unique properties, have shown great potential for energy storage. Following the discovery of graphene, a new family of 2D transition metal carbides/nitrides, MXenes, derived from MAX phase precursors, have attracted extensive attention in recent years. The superior physical and chemical properties of MXenes include high mechanical strength, excellent electrical conductivity, multiple possible surface terminations, hydrophilic features, superior specific surface area, and the ability to accommodate intercalants. When applied as electrodes in lithium‐based batteries, MXenes have demonstrated excellent performance. In this progress report, the authors summarize the recent advances of MXenes and MXene‐based composites in terms of synthesis strategies, morphology engineering, physical/chemical properties, and their applications in lithium‐ion batteries and lithium–sulfur batteries. Furthermore, challenges and perspectives for MXenes and MXene‐based composites for lithium‐based energy storage devices are also outlined.

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Section: Introductionmentioning

confidence: 99%

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

Tang

Guo

et al. 2018

Advanced Energy Materials

359

184

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“…

and/or N. [1][2][3][4][5][6][7][8] MXenes possess both metallic conductivity and hydrophilicity, and their surfaces are terminated with hydrophilic groups that provide intercalation or surface redox capacitances with high conductivity (2400 S cm −1 , comparable to multilayer graphene). [8][9][10][11][12][13][14][15][16][17] In addition, Ti 3 C 2 MXene exhibited a high antibacterial efficiency, with growth inhibition of 97.70% for Escherichia coli, and ultrathin MXene-based fieldeffect transistors with high biocompatibility could be utilized to perform highly sensitive label-free detection of dopamine, revealing that MXenes could serve as novel nanomaterials with great potential in environmental and biomedical applications. [8][9][10][11][12][13][14][15][16][17] In addition, Ti 3 C 2 MXene exhibited a high antibacterial efficiency, with growth inhibition of 97.70% for Escherichia coli, and ultrathin MXene-based fieldeffect transistors with high biocompatibility could be utilized to perform highly sensitive label-free detection of dopamine, revealing that MXenes could serve as novel nanomaterials with great potential in environmental and biomedical applications.

…”

mentioning

confidence: 99%

White Photoluminescent Ti₃C₂ MXene Quantum Dots with Two‐Photon Fluorescence

et al. 2019

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A recently created class of inorganic 2D materials, MXenes, has become a subject of intensive research. Reducing their dimensionality from 2D to 0D quantum dots (QDs) could result in extremely useful properties and functions. However, this type of research is scarce, and the reported Ti 3 C 2 MXene QDs (MQDs) have only shown blue fluorescence emission. This work demonstrates a facile, high‐output method for preparing bright white emitting Ti 3 C 2 MQDs. The resulting product is two layers thick with a lateral dimension of 13.1 nm. Importantly, the as prepared Ti 3 C 2 MQDs present strong two‐photon white fluorescence. Their fluorescence under high pressure is also investigated and it is found that the white emission is very stable and the pressure makes it possible to change from cool white emission to warm white emission. Hybrid nanocomposites are then fabricated by polymerizing Ti 3 C 2 MQDs in polydimethylsiloxane (PDMS) solution, and the bright white emitting hybrid materials in white light‐emitting diodes are used. This work provides a facile and general approach to modulate various nanoscale MXene materials, and could further aid the wide development of applications for MXene materials in various optical‐related fields.

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“…2 Thus, from the material point of view, the electron affinity, surface function groups, as well as work function are important factors affecting the output performance of TENG. A vast number of advanced materials have been explored, including graphene, [106][107][108][109] MXenes, 110,111 hydrogels, 112-115 aerogels, [116][117][118] black phosphorus (BP), 119 etc.…”

Section: Methodsmentioning

confidence: 99%

“…Dong et al reported that a layer of MXenes (Ti 3 C 2 T x ) film fabricated by spray coating its aqueous suspension on glass had a neutral state when contacting against PTFE, while a voltage of 650 V can be delivered when contacted with polyethylene terephthalate (PET) (Figure C). This is mainly because Ti 3 C 2 T x has the same terminal groups with PTFE . Flexible TENG can be realized by coating the MXenes on flexible substrates, such as ITO/PET.…”

Section: Flexible Tengmentioning

confidence: 99%

Recent progress on flexible nanogenerators toward self‐powered systems

Liu

Wang

Zhao

et al. 2020

InfoMat

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The advances in wearable/flexible electronics have triggered tremendous demands for flexible power sources, where flexible nanogenerators, capable of converting mechanical energy into electricity, demonstrate its great potential. Here, recent progress on flexible nanogenerators for mechanical energy harvesting toward self‐powered systems, including flexible piezoelectric and triboelectric nanogenerator, is reviewed. The emphasis is mainly on the basic working principle, the newly developed materials and structural design as well as associated typical applications for energy harvesting, sensing, and self‐powered systems. In addition, the progress of flexible hybrid nanogenerator in terms of its applications is also highlighted. Finally, the challenges and future perspectives toward flexible self‐powered systems are reviewed.

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Metallic MXenes: A new family of materials for flexible triboelectric nanogenerators

Cited by 282 publications

References 45 publications

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

White Photoluminescent Ti₃C₂ MXene Quantum Dots with Two‐Photon Fluorescence

Recent progress on flexible nanogenerators toward self‐powered systems

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Metallic MXenes: A new family of materials for flexible triboelectric nanogenerators

Cited by 282 publications

References 45 publications

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

2D Metal Carbides and Nitrides (MXenes) as High‐Performance Electrode Materials for Lithium‐Based Batteries

White Photoluminescent Ti3C2 MXene Quantum Dots with Two‐Photon Fluorescence

Recent progress on flexible nanogenerators toward self‐powered systems

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White Photoluminescent Ti₃C₂ MXene Quantum Dots with Two‐Photon Fluorescence