Partial Atomic Tin Nanocomplex Pillared Few-Layered Ti3C2Tx MXenes for Superior Lithium-Ion Storage

Abstract

HIGHLIGHTS • A facile NH 4 + method was proposed to prepare Sn nanocomplex pillared few-layered Ti 3 C 2 T x MXene nanosheets. • The MXene nanosheets showed excellent lithium-ion storage performances among MXene-based materials, which can maintain 1016 mAh g −1 after 1200 cycles at 2000 mA g −1 and deliver a stable capacity of 680 mAh g −1 at 5 A g −1. ABSTRACT MXenes have attracted great interest in various fields, and pillared MXenes open a new path with larger interlayer spacing. However, the further study of pillared MXenes is blocked at multilayered state due to serious restacking phenomenon of few-layered MXene nanosheets. In this work, for the first time, we designed a facile NH 4+ method to fundamentally solve the restacking issues of MXene nanosheets and succeeded in achieving pillared few-layered MXene. Sn nanocomplex pillared few-layered Ti 3 C 2 T x (STCT) composites were synthesized by

Aggregation‐Resistant 3D Ti3C2Tx MXene with Enhanced Kinetics for Potassium Ion Hybrid Capacitors

“…However, with the rapid development of renewable energy such as wind and solar, new batteries technologies for grid-level energy storage is extremely necessary because of limited resources and growing costs of lithium. [1] Potassium (K) ion batteries have attracted increasing attention as a promising candidate for next-generation energy storage systems due to the abundant resources and low redox To overcome the common aggregation issues of Ti 3 C 2 T x and other 2D materials, one strategy is introducing "pillar," such as polymers, [12b] nanoparticles, [14] nanotubes, [15] and nanosheets, [16] to promise the space between layer and layer. However, the electrochemical performance would be affected by the added materials.…”

“…To overcome the common aggregation issues of Ti 3 C 2 T x and other 2D materials, one strategy is introducing “pillar,” such as polymers, [ 12b ] nanoparticles, [ 14 ] nanotubes, [ 15 ] and nanosheets, [ 16 ] to promise the space between layer and layer. However, the electrochemical performance would be affected by the added materials.…”

Strategies for Fabricating High‐Performance Electrochemical Energy‐Storage Devices by MXenes

“…[212] For example, Zhang et al incorporated tin nanocomplexes into the interlayer voids of few-layer Ti 3 C 2 T x by pillaring technique. [213] In particular, multilayer MXenes prepared based on HF etching were delaminated by NH 4 + , followed by a pre-pillaring process by CTAB. The intercalation of Sn 4 + was performed by ion exchange, which resulted in few-layer Ti 3 C 2 T x MXenes pillared by Sn nanocomplexes (STCT), as shown in Figure 20 (e).…”

MXenes for Solar Cells

“…With the ever-increasing demand of clean and renewable energy resources [1][2][3][4], considerable attention has been devoted to the development of novel materials toward efficient solar cells [5][6][7][8][9][10][11][12][13][14]. As a family of important two-dimensional materials, MXenes, layered carbides and nitrides of transition metals first reported by the Gogotsi group in 2011 [15], which have been extensively investigated in various fields including energy storage [16][17][18][19][20][21][22], biomedical fields [23][24][25], electromagnetic applications [26][27][28][29], sensors [30][31][32][33][34], light-emitting diodes [35][36][37], water purification [38][39][40][41][42][43] and catalysis [44][45][46]…”