1c:I[419806,["/_next/static/chunks/bb923814e1f4d2e9.js","/_next/static/chunks/dd3ee9f5b7716ca6.js","/_next/static/chunks/4204a0ae82542ca8.js","/_next/static/chunks/1270dead247da766.js","/_next/static/chunks/6e1aa89a642f40be.js","/_next/static/chunks/2d7aa753e81324a8.js","/_next/static/chunks/8ffd0b71567920d8.js","/_next/static/chunks/67ea6dfd21f16c5f.js","/_next/static/chunks/24eb4379f68013fd.js","/_next/static/chunks/b8cd775ffdf935bd.js","/_next/static/chunks/983103cd9eb7b428.js","/_next/static/chunks/263f2cdcb9aa2341.js","/_next/static/chunks/294b9525248c8e5f.js"],"default"] 1d:T4f3,Two-dimensional transition-metal carbide materials (termed MXene) have attracted huge attention in the field of electrochemical energy storage due to their excellent electrical conductivity, high volumetric capacity, etc. Herein, with inspiration from the interesting structure of pillared interlayered clays, we attempt to fabricate pillared Ti₃C₂ MXene (CTAB-Sn(IV)@Ti₃C₂) via a facile liquid-phase cetyltrimethylammonium bromide (CTAB) prepillaring and Sn⁴⁺ pillaring method. The interlayer spacing of Ti₃C₂ MXene can be controlled according to the size of the intercalated prepillaring agent (cationic surfactant) and can reach 2.708 nm with 177% increase compared with the original spacing of 0.977 nm, which is currently the maximum value according to our knowledge. Because of the pillar effect, the assembled LIC exhibits a superior energy density of 239.50 Wh kg^-1 based on the weight of CTAB-Sn(IV)@Ti₃C₂ even under higher power density of 10.8 kW kg^-1. When CTAB-Sn(IV)@Ti₃C₂ anode couples with commercial AC cathode, LIC reveals higher energy density and power density compared with conventional MXene materials.1e:T490,Two-dimensional transition-metal carbides and nitrides, known as MXenes, have garnered increasing attention for nearly a decade by virtue of their versatile composition and structure, stability under certain conditions of interest in (electro)catalysis, and numerous appealing properties. Given the abundance of their components, large surface area and high laboratory-scale activities, MXenes are promising catalysts and supports for several heterogeneous catalytic and electrocatalytic reactions. This Perspective briefly summarizes the most relevant (electro)catalytic processes where MXenes hold promise as competitive alternatives to traditional Pt-group catalysts. We discuss how the interplay of metal elements with carbon, nitrogen, and various surface terminations modulates the catalytic activity of MXenes. In particular, we analyze the connection between experimental and simulated MXene structures and discuss the differences with bulk carbide extended surfaces. The great advances in synthesis routes and upscaling, in combination with realistic computational models, may give MXenes a leading role in the current quest for efficient catalytic processes.1f:T691,

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