One-step gas-phase syntheses of few-layered single-phase Ti2NCl2 and Ti2CCl2 MXenes with high stabilities
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 Ti<sub>2</sub>NCl<sub>2</sub>. Here, we propose a one-step gas-phase synthetic method to fabricate few-layered single-phase Ti<sub>2</sub>NCl<sub>2</sub> and Ti<sub>2</sub>CCl<sub>2</sub>. 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 Ti<sub>2</sub>CCl<sub>2</sub> solution is 73 times longer than that of Ti<sub>2</sub>CCl<sub>x</sub>. Furthermore, the specific capacity for Li<sup>+</sup> storage with Ti<sub>2</sub>NCl<sub>2</sub> is 1.37 times greater than that of Ti<sub>2</sub>CCl<sub>2</sub>. The one-step gas-phase method will accelerate practical application of MXenes.
Authors
- Huigang Zhang (ORCID: https://orcid.org/0000-0002-4722-5384)
- Chenchen Chen (ORCID: https://orcid.org/0009-0006-4470-8037)
- Qingshan Zhu (ORCID: https://orcid.org/0000-0002-5071-4912)
- Yafeng Yang (ORCID: https://orcid.org/0000-0002-0789-978X)
- Maoqiao Xiang (ORCID: https://orcid.org/0000-0002-2964-7655)
- Chuanfang Zhang (ORCID: https://orcid.org/0000-0001-8663-3674)
- Puheng Yang
- Jiake Wei (ORCID: https://orcid.org/0000-0001-7450-7005)
- Hebang Shi
- Jie Zheng (ORCID: https://orcid.org/0000-0002-2559-1412)
- Qinghua Dong
- Fen Yue
- W. J. Ding (ORCID: https://orcid.org/0000-0002-0339-0177)
- Jiuyi Zhu (ORCID: https://orcid.org/0009-0009-3775-1063)
Institutions
- Dalian Institute of Chemical Physics (CN)
- Chinese Academy of Sciences (CN)
- Sichuan University (CN)
- Institute of Process Engineering (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-11-28
- DOI
- https://doi.org/10.1038/s41467-024-54815-9
- Citations
- 12
- Primary Topic
- MXene and MAX Phase Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.41
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- Youth Innovation Promotion Association