MXenes as a versatile platform for reactive surface modification and superior sodium‐ion storages

Abstract

Owing to the large surface area and adjustable surface properties, the two‐dimensional (2D) MXenes have revealed the great potential in constructing hybrid materials and for Na‐ion storage (SIS). In particular, the facilitated Na‐ion adsorption, intercalation, and migration on MXenes can be achieved by surface modification. Herein, a new surface modification strategy on MXenes, namely, the reactive surface modification (RSM), is focused and illustrated, while the recent advances in the research of SIS performance based on MXenes and their derivatives obtained from the RSM process are briefly summarized as well. In the second section, the intrinsic surface chemistries of MXenes and their surface‐related physicochemical properties are first summarized. Meanwhile, the close relationship between the surface characters and the Na‐ion adsorption, intercalation, and migration on MXenes is emphasized. Following the SIS properties of MXenes, the surface‐induced SIS property variations, and the SIS performance of RSM MXene‐based hybrids are discussed progressively. Finally, the existing challenges and prospects on the RSM MXene‐based hybrids for SIS are proposed.

Gelatin-assisted co-exfoliation of graphene nanoplatelets/MoS2for high-performance supercapacitors

“…MXenes are considered as potential electrode candidates for supercapacitors having higher surface area and easy surface modication is highly attentive in energy storage. 34 MoS 2 nanosheets consist of various oxidation states varying from +2 to +6 hence, MoS 2 nanosheets have superior super capacitive behavior over bulk MoS 2 that restricts its practical utility due to its poor conductivity. [35][36][37] In this scenario, Thangappan et al obtained a graphene decorated MoS 2 electrode with a specic capacitance (C s ) of 270 F g À1 at 0.1 A g À1 .…”

Vanadium‐based metal‐organic frameworks and their derivatives for electrochemical energy conversion and storage

“…19,20 In view of the above-mentioned issues, the development for more efficient yet durable electrocatalysts and electrode materials with desirable electrochemical properties are of the utmost importance. Carbon-based materials, [21][22][23][24][25][26] gel-based materials, 27 Prussian blue analogues (PBAs)-based materials, 28 conducting-polymer-based materials, 29 transition metal dichalcogenide-based materials, [30][31][32] perovskite-type oxides, 33 metal sulfides, 34 layered double hydroxides (LDHs), 35 MXenes [36][37][38][39][40] are some of the materials that were investigated recently by researchers in hopes to meet the demands.…”

Boosting the peroxidase-like activity of Pt nanozymes by a synergistic effect of Ti3C2 nanosheets for dual mechanism detection

“…27,28 MXenes, a kind of metal nitride and metal carbide material with a two-dimensional layered structure, have been widely used in electrocatalytic, photocatalytic and biomedical applications. [29][30][31] Because of the outstanding electrical conductivity and abundant hydrophilic groups, MXenes are also demonstrated as an ideal co-catalyst for a variety of catalysts to improve their photocatalytic and electrocatalytic efficiency. [32][33][34] Inspired by this, we hypothesized that the MXenes probably can modify the electronic structure of metal NPs to adjust their enzyme-like catalytic ability.…”