MXenes公司
氮化物
焦耳加热
碳化物
表面改性
电化学
钝化
化学工程
化学
材料科学
图层(电子)
纳米技术
复合材料
工程类
电极
物理化学
作者
Penghui Cui,Hejing Wang,Bowen Yang,Shu Dong,Menggai Jiao,Ruizheng Zhao,Kai Zhu,Yongzheng Fang,Zhen Zhou,Dianxue Cao
标识
DOI:10.1002/batt.202400274
摘要
Abstract Chemical manipulation of surface functional groups on two‐dimensional transition metal carbides and/or nitrides (MXenes) provides a wide range of design and application prospects. However, achieving rapid targeted modification of surface groups remains a significant challenge. Herein, we propose a general strategy to swiftly shear and customize surface groups on Ti 3 C 2 T x −MXene via the flash Joule heating (FJH) reaction within 1 s. Successfully, MXenes with 9 target terminations, including VII A (F, Cl, Br, or I), VI A (O, S, or Se), and V A (N or P), either single or multiple, are synthesized, with a surface content of up to about 76 %. The impact of these terminations is systematically analyzed on electrochemical performance, demonstrating that VI A and V A terminations have higher electrochemical activity than VII A. Particularly, N‐, S‐, and O‐terminated MXenes exhibit enhanced specific capacities and undecayed cycling performance. These findings offer valuable insights for the surface engineering design and performance optimization of functional materials.
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