Abstract
HighlightsA facile NH4+ method was proposed to prepare Sn nanocomplex pillared few-layered Ti3C2Tx 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.
Highlights
Two-dimensional (2D) materials have stimulated great research interest in the fields of energy storage, catalysis, sensor, semiconductor, etc, because of their novel physical and chemical properties [1,2,3,4]
The results strongly demonstrate the advantages of pillared few-layered MXenes in the field of energy storage
Few-layered T i3C2Tx MXene powders were pre‐ pared via NH4+ method, which can fundamentally solve the restacking issues of few-layered MXene nanosheets, and the detailed process can be seen in experimental section
Summary
Two-dimensional (2D) materials have stimulated great research interest in the fields of energy storage, catalysis, sensor, semiconductor, etc, because of their novel physical and chemical properties [1,2,3,4]. MXenes show promising application prospect in energy storage [10,11,12], the practical electrochemical perfor‐ mance of MXenes falls short of expectations [13] This poor result is probably due to the blocking effect of surface anion and excessive accumulation of layers [14,15,16]. Due to “pillar effect,” which means the interlayer spacing of MXene matrix was enlarged by active materials, providing more lithium storage interspace and endowing the pillared MXene nanocomposites excellent electrochemical performance [25, 28]. Discovering effective method to prepare pillared few-layered MXene-based composites is of great significance; realization of pillared few-layered MXenes with active materials is still a big challenge to be taken
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