New insights on MXene and its advanced hybrid materials for lithium-ion batteries

Abstract

Electrode materials with exceptional cyclic stability and high-rate performance have been in extensive demand for the fast growth of energy storage applications.

Subsurface oxygen reduction reaction activity on Ti2N MXene revealed byin situRaman spectroelectrochemistry

“…MXenes, an emerging class of two-dimensional (2D) transition metal carbides and/or nitrides, have attracted considerable attention in the elds of energy storage, [11][12][13][14][15] catalysis, [16][17][18] sensors, 19 electronics, 20 and biomedicine 21 due their unique properties. MXenes are expressed by the general formula M n+1 X n T x (n = 1-4) wherein M is an early transition metal (Ti, Mo, V, Nb, etc.…”

A Rising 2D Star: Novel MBenes with Excellent Performance in Energy Conversion and Storage

“…Reproduced with permission from Ref. [ 47 ]. b Schematic structure of the metal-ion batteries showing the working mechanisms of the charge and discharge process.…”

“…MXenes have the advantages of large specific surface area, good hydrophilicity, good electrical conductivity and high mechanical strength, and play an important role in energy applications such as supercapacitors (SCs), LIBs and other catalytic processes [36][37][38][39][40]. For example, 2D Ti 3 C 2 T x (T x stands for the surface terminations such as hydroxyl, oxygen, or fluorine) and other MXenes are promising electrode materials for SCs [41][42][43][44][45], LIBs [46,47] and lithium-sulfur batteries (LSBs) [48,49] and beyond LIBs [50][51][52].…”

“…Fig.18a Schematic illustration of MXene-based anode batteries. Reproduced with permission from Ref [47]…”

Covalent Organic Frameworks (COFs)/MXenes Heterostructures for Electrochemical Energy Storage

“…Depending on the interlayer spacings between the MXene layers, they have become promising hosts for a variety of energy storage devices. For instance, MXene was largely demonstrated for lithium-ion batteries. − Instead of lithium, additional cations like sodium, potassium, magnesium, etc. are also intercalated into the MXene layers, showing their potential toward hybrid devices.…”