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Oxygen vacancy-rich Ti2NTix MXene as a high-efficiency catalyst for enhanced hydrogen desorption of MgH2статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
- Авторы: Qin Lina, Zhang Guorong, Liang Taigen, Sun Lixian, Xu Fen, Xia Yongpeng, Verevkin Sergey P., Vostrikov Sergey V., Maximov Anton Lvovich, Xiao Xuezhang, Chen Lixin, Pan Hongge
- Журнал: Journal of Alloys and Compounds
- Том: 1030
- Год издания: 2025
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 180702
- DOI: 10.1016/j.jallcom.2025.180702
- Аннотация: As a prominent catalyst in the development of MgH2 hydrogen storage materials, MXene can significantly enhance hydrogen storage performance. In this study, we investigated the impact of using molten salts instead of HF to treat Ti2NTix and its impact on the hydrogen storage properties of MgH2. MgH2-10 wt% Ti2NTix composite has been prepared via ball milling. The results showed that adding 10 wt% Ti2NTix largely lowered the initial dehydrogenation temperature of MgH2 from 300.2 ℃ to 173.5 ℃. Under isothermal conditions at 350 ℃, the composite released 6.11 wt% H2 within 4 min. Furthermore, after dehydrogenation, the MgH2-10 wt% Ti2NTix composite absorbed 3.4 wt% H2 in 60 min at 100 ℃ and 30 bar hydrogen pressure. EPR found that there is a large number of oxygen vacancies on the Ti2NTix surface introduced by molten salt treatment, providing abundant active sites and accelerating electron transfer. Additionally, the in-situ formation of titanium nitride compounds, the synergistic multivalent catalytic effect of titanium, and the multiphase interfaces in MgH2-10 wt% Ti2NTix contributed to the composite’s improved catalytic activity and stability. This work provided valuable insights into the application of oxygen vacancy-rich, incompletely etched Ti2NTix materials in magnesium-based hydrogen storage, demonstrating their great potential in hydrogen storage technologies.
- Добавил в систему: Захарян Елена Михайловна