Two‐Dimensional Nb‐Based M<sub>4</sub>C<sub>3</sub> Solid Solutions (MXenes)

Yang, Jian; Naguib, Michael; Ghidiu, Michael; Pan, Limei; Gu, Jian B.; Nanda, Jagjit; Halim, Joseph; Gogotsi, Yury; Barsoum, Michel W.

doi:10.1111/jace.13922

Cited by 284 publications

(134 citation statements)

References 38 publications

Supporting

Mentioning

130

Contrasting

Order By: Relevance

“…[ 49 ] However, the fi rst-cycle irreversibility of Mo 2 CT x was lower compared to that reported for Ti 3 C 2 T x and other MXenes. [ 10,11,[50][51][52] Note that more than 2/3 of the capacity is stored at voltages below 0.5 V, which suggests that Mo 2 CT x could well be used as an anode material.…”

Section: Electrochemical Performance Of D -Mo 2 Ct X -Cnt As Anode Inmentioning

confidence: 97%

Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Halim

Kota

Lukatskaya

et al. 2016

Adv Funct Materials

Self Cite

1,120

771

View full text Add to dashboard Cite

Large scale synthesis and delamination of 2D Mo 2 CT x (where T is a surface termination group) has been achieved by selectively etching gallium from the recently discovered nanolaminated, ternary transition metal carbide Mo 2 Ga 2 C. Different synthesis and delamination routes result in different fl ake morphologies. The resistivity of free-standing Mo 2 CT x fi lms increases by an order of magnitude as the temperature is reduced from 300 to 10 K, suggesting semiconductor-like behavior of this MXene, in contrast to Ti 3 C 2 T x which exhibits metallic behavior. At 10 K, the magnetoresistance is positive. Additionally, changes in electronic transport are observed upon annealing of the fi lms. When 2 µm thick fi lms are tested as electrodes in supercapacitors, capacitances as high as 700 F cm −3 in a 1 M sulfuric acid electrolyte and high capacity retention for at least 10,000 cycles at 10 A g −1 are obtained.Free-standing Mo 2 CT x fi lms, with ≈8 wt% carbon nanotubes, perform well when tested as an electrode material for Li-ions, especially at high rates. At 20 and 131 C cycling rates, stable reversible capacities of 250 and 76 mAh g −1 , respectively, are achieved for over 1000 cycles.

show abstract

Section: Electrochemical Performance Of D -Mo 2 Ct X -Cnt As Anode Inmentioning

confidence: 97%

Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Halim

Kota

Lukatskaya

et al. 2016

Adv Funct Materials

Self Cite

1,120

771

View full text Add to dashboard Cite

show abstract

“…These 2D systems have been named MXenes because they originate from the MAX phases by removing A elements and because they are structurally analogous to the graphene [40,41]. The 2D MXenes such as Ti 2 C, V 2 C, Nb 2 C, Ta 2 C, Mo 2 C, Ti 3 C 2 , Nb 4 C 3 have already been synthesized [40,41,46,47]. MXenes are known to have or predicted to have electronic, magnetic, and energy harvesting applications [48][49][50][51][52][53][54][55][56][57][58][59][60][61][62].…”

Section: Introductionmentioning

confidence: 99%

Topological insulators in the ordered double transition metalsM2′M″C2MXenes (M′<

et al. 2016

View full text Add to dashboard Cite

The family of two-dimensional transition metal carbides, so called MXenes, has recently found new members with ordered double transition metals M ′ 2 M ′′ C 2 , where M ′ and M ′′ stand for transition metals. Here, using a set of first-principles calculations, we demonstrate that some of the newly added members, oxide M ′ and M ′′ , while the band inversion occurs at the Γ point among the degenerate d x 2 −y 2 /d xy orbitals and a non-degenerate d 3z 2 −r 2 orbital, which is driven by the hybridization of the neighboring orbitals. The phonon dispersion calculations find that the predicted topological insulators are structurally stable. The predicted W-based MXenes with large band gaps might be suitable candidates for many topological applications at room temperature. In addition, we study the electronic structures of thicker ordered double transition metals M Zr, Hf) and find that they are nontrivial topological semimetals. Among the predicted topological insulators and topological semimetals, Mo 2 TiC 2 and Mo 2 Ti 2 C 3 functionalized with mixture of F, O, and OH have already been synthesized, and therefore some of the topological materials proposed here can be experimentally accessed.

show abstract

“…Experimentally [7], Zr 3 C 2 [101], Nb 4 C 3 [102], Ta 4 C 3 [8], and Ti 4 N 3 [103] as well as TiNbC [8] …”

Section: Dmentioning

confidence: 99%

Electronic properties and applications of MXenes: a theoretical review

et al. 2017

View full text Add to dashboard Cite

Recent chemical exfoliation of layered MAX phase compounds to novel two-dimensional transition metal carbides and nitrides, so called MXenes, has brought new opportunity to materials science and technology. This review highlights the computational attempts that have been made to understand the physics and chemistry of this very promising family of advanced two-dimensional materials, and to exploit their novel and exceptional properties for electronic and energy harvesting applications.

show abstract

Two‐Dimensional Nb‐Based M₄C₃ Solid Solutions (MXenes)

Cited by 284 publications

References 38 publications

Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Topological insulators in the ordered double transition metalsM2′M″C2MXenes (M′<

Electronic properties and applications of MXenes: a theoretical review

Contact Info

Product

Resources

About

Two‐Dimensional Nb‐Based M4C3 Solid Solutions (MXenes)

Cited by 284 publications

References 38 publications

Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Synthesis and Characterization of 2D Molybdenum Carbide (MXene)

Topological insulators in the ordered double transition metalsM2′M″C2MXenes (M′<

Electronic properties and applications of MXenes: a theoretical review

Contact Info

Product

Resources

About

Two‐Dimensional Nb‐Based M₄C₃ Solid Solutions (MXenes)