Electrochemical etching of Ti2AlC to Ti2CTx (MXene) in low-concentration hydrochloric acid solution

Sun, Wenjuan; Shah, Smit A.; Chen, Yexiao; Tan, Zeyi; Gao, Huili; Habib, Touseef; Radović, Miladin; Green, M. J.

doi:10.1039/c7ta05574a

Cited by 473 publications

(307 citation statements)

References 23 publications

Supporting

Mentioning

301

Contrasting

Unclassified

Order By: Relevance

“…Electrochemical etching presents promising results in comparison to fluoride‐based etching (Table ). In 2017, Sun et al used a three‐electrode cell to conduct the etching process . A homemade porous Ti 2 AlC, dilute HCl solution (2 m ) and a Pt foil serve as working electrode, electrolyte and counterelectrode, respectively.…”

Section: Synthesis Of 2d Materials With Designed Functionalitymentioning

confidence: 99%

Emerging 2D Materials Produced via Electrochemistry

et al. 2020

View full text Add to dashboard Cite

2D materials are important building blocks for the upcoming generation of nanostructured electronics and multifunctional devices due to their distinct chemical and physical characteristics. To this end, large‐scale production of 2D materials with high purity or with specific functionalities represents a key to advancing fundamental studies as well as industrial applications. Among the state‐of‐the‐art synthetic protocols, electrochemical exfoliation of layered materials is a very promising approach that offers high yield, great efficiency, low cost, simple instrumentation, and excellent up‐scalability. Remarkably, playing with electrochemical parameters not only enables tunable material properties but also increases the material diversities from graphene to a wide spectrum of 2D semiconductors. Here, a succinct and critical survey of the recent progress in this research direction is presented, comprising the strategic design, exfoliation principles, underlying mechanisms, processing techniques, and potential applications of 2D materials. At the end of the discussion, the emerging trends, challenges, and opportunities in real practice are also highlighted.

show abstract

Section: Synthesis Of 2d Materials With Designed Functionalitymentioning

confidence: 99%

Emerging 2D Materials Produced via Electrochemistry

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Nevertheless, bare MXenes oxidise very quickly, so realistically the best capacities are found in O‐ (which can adsorb multiple layers of Li), followed by HO‐ and F‐terminated MXenes (with the exception of special cases where normal functional groups have been substituted by another element or molecule such as Si) . This hierarchy of capacities is quite convenient for those who perform fluorine‐free MXene syntheses, as OH terminations can be removed by lithiation (which occurs during initial charge of a Li‐ion battery) or annealing, and potentially be substituted by O terminations.…”

Section: Li‐ion Batteriesmentioning

confidence: 99%

MXene‐Based Anodes for Metal‐Ion Batteries

Greaves

Barg

Bissett

2020

Batteries & Supercaps

View full text Add to dashboard Cite

2D transition metal carbides and nitrides (MXenes) are electrochemically active materials capable of exhibiting pseudocapacitance. Multilayer MXenes are similar to graphite, but with larger interlayer spacing and surface functionalities which allow them to readily disperse in water and undergo a range of reactions without compromising their electrical conductivity. The large interlayer spacing enables MXenes to readily intercalate large ions, and form composites with materials such as graphene, metal oxides, transition metal dichalcogenides and silicon, with which they make electrodes able to deliver exceptional capacities at high power rates over thousands of cycles. Research into MXenes for energy storage has grown exponentially since 2011, and it is now necessary, especially for readers new to the field, to review progress made in more specific areas. This critical review will therefore analyse the progress made in developing MXene‐based batteries, focusing solely on anodes developed for metal‐ion batteries such as Li‐ion, Na‐ion and K‐ion.

show abstract

“…The addition of fluoride salts, such as LiF and NaF, enables the selective etching of phase A in MAX under mild conditions by hydrochloric acid or sulfuric acid . Sun et al used low‐concentration hydrochloric acid to etch Al atom in Ti 2 AlC without adding fluoride . In addition to etching with HF or a mixture of HCl and a fluoride salt, in view of the amphoteric nature of Al, Al can also be etched by alkali.…”

Section: Classification Of 2d Crystalsmentioning

confidence: 99%

2D Crystal–Based Fibers: Status and Challenges

Meng

Kong

et al. 2019

Small

View full text Add to dashboard Cite

2D crystals are emerging new materials in multidisciplinary fields including condensed state physics, electronics, energy, environmental engineering, and biomedicine. To employ 2D crystals for practical applications, these nanoscale crystals need to be processed into macroscale materials, such as suspensions, fibers, films, and 3D macrostructures. Among these macromaterials, fibers are flexible, knittable, and easy to use, which can fully reflect the advantages of the structure and properties of 2D crystals. Therefore, the fabrication and application of 2D crystal–based fibers is of great importance for expanding the impact of 2D crystals. In this Review, 2D crystals that are successfully prepared are overviewed based on their composition of elements. Subsequently, methods for preparing 2D crystals, 2D crystals dispersions, and 2D crystal–based fibers are systematically introduced. Then, the applications of 2D crystal–based fibers, such as flexible electronic devices, high‐efficiency catalysis, and adsorption, are also discussed. Finally, the status‐of‐quo, perspectives, and future challenges of 2D crystal–based fibers are summarized. This Review provides directions and guidelines for developing new 2D crystal–based fibers and exploring their potentials in the fields of smart wearable devices.

show abstract

Electrochemical etching of Ti₂AlC to Ti₂CT_x (MXene) in low-concentration hydrochloric acid solution

Abstract: In this study, we successfully demonstrate the electrochemical etching of Al from porous Ti2AlC electrodes in dilute hydrochloric acid to form a layer of Ti2CTx MXene on Ti2AlC.

Cited by 473 publications

References 23 publications

Emerging 2D Materials Produced via Electrochemistry

Emerging 2D Materials Produced via Electrochemistry

MXene‐Based Anodes for Metal‐Ion Batteries

2D Crystal–Based Fibers: Status and Challenges

Contact Info

Product

Resources

About