Tailoring Electronic and Optical Properties of MXenes through Forming Solid Solutions.

@article{Han2020TailoringEA,
  title={Tailoring Electronic and Optical Properties of MXenes through Forming Solid Solutions.},
  author={Meikang Han and Kathleen Maleski and Christopher Eugene Shuck and Yizhou Yang and James T. Glazar and Alexandre C. Foucher and Kanit Hantanasirisakul and Asia Sarycheva and Nathan C Frey and Steven J. May and Vivek B. Shenoy and Eric A. Stach and Yury Gogotsi},
  journal={Journal of the American Chemical Society},
  year={2020}
}
Alloying is a long-established strategy to tailor properties of metals for specific applications, thus retaining or enhancing the principal elemental characteristics while offering additional functionality from the added elements. We propose a similar approach to the control of properties of two-dimensional transition metal carbides known as MXenes. MXenes (Mn+1Xn) have two sites for compositional variation: elemental substitution on both the metal (M) and carbon/nitrogen (X) sites presents… 

Figures from this paper

Electronic and Optical Property Control of Polycation/MXene Layer-by-Layer Assemblies with Chemically Diverse MXenes.

The work demonstrates that the properties of MXene/polycation multilayers are highly dependent on the choice of constituent MXene and that the MXene type can be altered to suit specific applications.

Shifts in valence states in bimetallic MXenes revealed by electron energy-loss spectroscopy (EELS)

MXenes are an emergent class of two-dimensional materials with a very wide spectrum of promising applications. The synthesis of multiple MXenes, specifically solid-solution MXenes, allows fine tuning

Layer-by-Layer Assembly-Based Heterointerfaces for Modulating the Electronic Properties of Ti3C2Tx MXene.

The modulated electrical transport and superior oxidation stability of the Ti3C2Tx MXene in the 3-LBL assembly have the potential to develop next-generation optoelectronic and memory devices.

2D transition metal carbides (MXenes) in metal and ceramic matrix composites

Recent developments for use of MXenes in metal and ceramic composites are reviewed and an outlook for future research in this field is provided.

MXenes: trends, growth, and future directions

Two-dimensional (2D) Ti3C2 discovery at Drexel University more than a decade ago created a new family of 2D transition metal carbides, nitrides, and carbonitrides [1]. Because top-down selective

The world of two-dimensional carbides and nitrides (MXenes)

The ability of MXenes to form carbonitrides and solid solutions suggests a potentially infinite number of compositions and opens a new era of computationally driven atomistic design of 2D materials.

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

Transition metal carbides and nitrides (MXenes) are a relatively new class of 2D materials, which include metallic and semiconducting examples. The chemical compositions of the vast MXene family span

High-Entropy 2D Carbide MXenes

Two-dimensional (2D) transition metal carbides and nitrides, known as MXenes, are a fast-growing family of 2D materials. MXenes 2D flakes have n + 1 (n = 1 – 4) atomic layers of transition metals
...

References

SHOWING 1-10 OF 54 REFERENCES

Two-dimensional molybdenum carbides: potential thermoelectric materials of the MXene family.

It turns out that monolayer and multilayer nanosheets of Mo2C acquire superior power factors to other MXenes upon any type of functionalization, and is proposed as a potential thermoelectric materials of the MXene family.

Distinguishing electronic contributions of surface and sub-surface transition metal atoms in Ti-based MXenes

MXenes are a rapidly-expanding family of 2D transition metal carbides and nitrides that have attracted attention due to their excellent performance in applications ranging from energy storage to

Synthesis and Surface Chemistry of 2D TiVC Solid-Solution MXenes.

These results provide the first systematic study on the effect of synthesis conditions on the surface chemistry of solid-solution TiVC MXene and provide a more favorable surface chemistry for energy storage applications.

Synthesis of Mo4VAlC4 MAX Phase and Two-Dimensional Mo4VC4 MXene with 5 Atomic Layers of Transition Metals.

This study demonstrates the existence of an additional subfamily of M5X4Tx MXenes as well as a twinned structure, allowing for a wider range of 2D structures and compositions for more control over properties, which could lead to many different applications.

Synthesis and electrochemical properties of 2D molybdenum vanadium carbides – solid solution MXenes

MXenes have demonstrated high performance as negative electrodes in supercapacitors with aqueous electrolytes due to their high redox capacitance. However, oxidation limits their use under positive

Control of electronic properties of 2D carbides (MXenes) by manipulating their transition metal layers.

The electronic properties of these Mo-containing MXenes are compared with their Ti3C2 counterparts, and are found to be no longer metallic-like conductors; instead the resistance increases mildly with decreasing temperatures, and density functional theory calculations suggest that OH terminated Mo-Ti MXene are semiconductors with narrow band gaps.

Multielemental single–atom-thick A layers in nanolaminated V2(Sn, A) C (A = Fe, Co, Ni, Mn) for tailoring magnetic properties

15 inherently nanolaminated V2(AxSn1-x)C (A = Fe, Co, Ni, Mn, and combinations thereof, with x ∼ 1/3) MAX phases synthesized by an alloy-guided reaction provide a structural design route to discover nanolAMinated materials and expand their chemical and physical properties.

Preparation of (Vx, Ti1−x)2C MXenes and their performance as anode materials for LIBs

MXenes as anode materials for Li-ion batteries (LIBs) have shown excellent electrochemical performance, and they still have great potential. To explore the effect of chemical composition on their

On the Chemical Diversity of the MAX Phases

...