氟化物
溶解
碳化钛
钛
氟化铵
MXenes公司
水溶液
材料科学
氢氟酸
铝
碳化物
氢氧化铵
无机化学
化学
化学工程
纳米技术
冶金
物理化学
工程类
作者
Sheng Yang,Panpan Zhang,Faxing Wang,Antonio Gaetano Ricciardulli,Martin R. Lohe,Paul W. M. Blom,Xinliang Feng
标识
DOI:10.1002/anie.201809662
摘要
Two-dimensional (2D) titanium carbide (Ti3 C2 ) is emerging as an important member of the MXene family. However, fluoride-based synthetic procedures remain an impediment to the practical applications of this promising class of materials. Here we demonstrate an efficient fluoride-free etching method based on the anodic corrosion of titanium aluminium carbide (Ti3 AlC2 ) in a binary aqueous electrolyte. The dissolution of aluminium followed by in situ intercalation of ammonium hydroxide results in the extraction of carbide flakes (Ti3 C2 Tx , T=O, OH) with sizes up to 18.6 μm and high yield (over 90 %) of mono- and bilayers. All-solid-state supercapacitor based on exfoliated sheets exhibits high areal and volumetric capacitances of 220 mF cm-2 and 439 F cm-3 , respectively, at a scan rate of 10 mV s-1 , superior to those of LiF/HCl-etched MXenes. Our strategy paves a safe way to the scalable synthesis and application of MXene materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI