One-step gas-phase syntheses of few-layered single-phase Ti2NCl2 and Ti2CCl2 MXenes with high stabilities

Fen Yue; Maoqiao Xiang; Jie Zheng; Jiuyi Zhu; Jiake Wei; Puheng Yang; Hebang Shi; Qinghua Dong; Wenjun Ding; Chenchen Chen; Yafeng Yang; Chuanfang John Zhang; Huigang Zhang; Qingshan Zhu

doi:10.1038/s41467-024-54815-9

One-step gas-phase syntheses of few-layered single-phase Ti₂NCl₂ and Ti₂CCl₂ MXenes with high stabilities

Nat Commun. 2024 Nov 28;15(1):10334. doi: 10.1038/s41467-024-54815-9.

Authors

Fen Yue^#^{1

2}, Maoqiao Xiang^#^{1

2}, Jie Zheng¹, Jiuyi Zhu^{1

2}, Jiake Wei³, Puheng Yang^{1

2}, Hebang Shi¹, Qinghua Dong^{1

2}, Wenjun Ding^{1

2}, Chenchen Chen¹, Yafeng Yang^{1

2}, Chuanfang John Zhang⁴, Huigang Zhang^{1

2}, Qingshan Zhu^{5

6

7}

Affiliations

¹ State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
² School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, 100049, China.
³ State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
⁴ College of Materials Science & Engineering, Sichuan University, Chengdu, 610065, China.
⁵ State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China. qszhu@ipe.ac.cn.
⁶ School of Chemical Engineering, University of the Chinese Academy of Sciences, Beijing, 100049, China. qszhu@ipe.ac.cn.
⁷ Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China. qszhu@ipe.ac.cn.

^# Contributed equally.

PMID: 39609424
DOI: 10.1038/s41467-024-54815-9

Abstract

With the iteration of etching techniques, MXenes have exhibited astounding accomplishments. Nevertheless, intricate procedures, expensive precursors, and degradation present obstacles for practical application. Although chemical vapor deposition has been developed as a solution, direct syntheses of few-layered single-phase MXenes remain an open challenge, especially for Ti₂NCl₂. Here, we propose a one-step gas-phase synthetic method to fabricate few-layered single-phase Ti₂NCl₂ and Ti₂CCl₂. Design of the activation section and segregation from the synthetic zone are the key factors. The reaction paths, synthetic mechanism, and degradation behavior are revealed. Due to the low proportion of Ti vacancies, the time constant of the Ti₂CCl₂ solution is 73 times longer than that of Ti₂CCl_x. Furthermore, the specific capacity for Li⁺ storage with Ti₂NCl₂ is 1.37 times greater than that of Ti₂CCl₂. The one-step gas-phase method will accelerate practical application of MXenes.

Abstract

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