Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2
Designing catalysts with high catalytic activity and stability is the key to achieve the commercial application of MgH2. Herein, the sulfur doped Ti3C2 (S-Ti3C2) was successfully prepared by heat treatment of Ti3C2 MXene under Ar/H2S atmosphere to facilitate the hydrogen release and uptake from MgH2...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2025-04-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956724002147 |
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| author | Zhenluo Yuan Xiuxiu Zhang Yitian Wu Shuyan Guan Shiqian Zhao Liqiang Ji Qiuming Peng Shumin Han Yanping Fan Baozhong Liu |
| author_facet | Zhenluo Yuan Xiuxiu Zhang Yitian Wu Shuyan Guan Shiqian Zhao Liqiang Ji Qiuming Peng Shumin Han Yanping Fan Baozhong Liu |
| author_sort | Zhenluo Yuan |
| collection | DOAJ |
| description | Designing catalysts with high catalytic activity and stability is the key to achieve the commercial application of MgH2. Herein, the sulfur doped Ti3C2 (S-Ti3C2) was successfully prepared by heat treatment of Ti3C2 MXene under Ar/H2S atmosphere to facilitate the hydrogen release and uptake from MgH2. The S-Ti3C2 exhibited pleasant catalytic effect on the hydriding/dehydriding kinetics and cyclic stability of MgH2. The addition of 5 wt% S-Ti3C2 into MgH2 resulted in a reduction of 114 °C in the starting dehydriding temperature compared to pure MgH2. MgH2 + 5 wt% S-Ti3C2 sample could quickly release 6.6 wt% hydrogen in 17 min at 220 °C, and 6.8 wt% H2 was absorbed in 25 min at 200 °C. Cyclic testing revealed that MgH2 + 5 wt% S-Ti3C2 system achieved a reversible hydrogen capacity of 6.5 wt%. Characterization analysis demonstrated that Ti-species (Ti0, Ti2+, Ti–S, and Ti3+) as active species significantly lowered the dehydrogenation temperature and promoted the re-/dehydrogenation kinetics of MgH2, and sulfur doping can effectively improve the stability of Ti0 and Ti3+, contributing to the improvement of cyclic stability of MgH2. This study provides strategy for the construction of catalysts for hydrogen storage materials. |
| format | Article |
| id | doaj-art-3bc02e8c597541f2a7ba8dcd61430f2c |
| institution | OA Journals |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-3bc02e8c597541f2a7ba8dcd61430f2c2025-08-20T02:12:45ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-04-011341843185310.1016/j.jma.2024.06.016Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2Zhenluo Yuan0Xiuxiu Zhang1Yitian Wu2Shuyan Guan3Shiqian Zhao4Liqiang Ji5Qiuming Peng6Shumin Han7Yanping Fan8Baozhong Liu9College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Henan Famous Diamond Co., Ltd., Mengzhou 454763, ChinaSchool of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaCentral Iron and Steel Research Institute Co., Ltd., Beijing 100081, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, ChinaState Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, ChinaCollege of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Corresponding authors.College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Corresponding authors.Designing catalysts with high catalytic activity and stability is the key to achieve the commercial application of MgH2. Herein, the sulfur doped Ti3C2 (S-Ti3C2) was successfully prepared by heat treatment of Ti3C2 MXene under Ar/H2S atmosphere to facilitate the hydrogen release and uptake from MgH2. The S-Ti3C2 exhibited pleasant catalytic effect on the hydriding/dehydriding kinetics and cyclic stability of MgH2. The addition of 5 wt% S-Ti3C2 into MgH2 resulted in a reduction of 114 °C in the starting dehydriding temperature compared to pure MgH2. MgH2 + 5 wt% S-Ti3C2 sample could quickly release 6.6 wt% hydrogen in 17 min at 220 °C, and 6.8 wt% H2 was absorbed in 25 min at 200 °C. Cyclic testing revealed that MgH2 + 5 wt% S-Ti3C2 system achieved a reversible hydrogen capacity of 6.5 wt%. Characterization analysis demonstrated that Ti-species (Ti0, Ti2+, Ti–S, and Ti3+) as active species significantly lowered the dehydrogenation temperature and promoted the re-/dehydrogenation kinetics of MgH2, and sulfur doping can effectively improve the stability of Ti0 and Ti3+, contributing to the improvement of cyclic stability of MgH2. This study provides strategy for the construction of catalysts for hydrogen storage materials.http://www.sciencedirect.com/science/article/pii/S2213956724002147Hydrogen storageMgH2KineticsCyclic stability |
| spellingShingle | Zhenluo Yuan Xiuxiu Zhang Yitian Wu Shuyan Guan Shiqian Zhao Liqiang Ji Qiuming Peng Shumin Han Yanping Fan Baozhong Liu Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2 Journal of Magnesium and Alloys Hydrogen storage MgH2 Kinetics Cyclic stability |
| title | Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2 |
| title_full | Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2 |
| title_fullStr | Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2 |
| title_full_unstemmed | Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2 |
| title_short | Effectively enhanced catalytic effect of sulfur doped Ti3C2 on the kinetics and cyclic stability of hydrogen storage in MgH2 |
| title_sort | effectively enhanced catalytic effect of sulfur doped ti3c2 on the kinetics and cyclic stability of hydrogen storage in mgh2 |
| topic | Hydrogen storage MgH2 Kinetics Cyclic stability |
| url | http://www.sciencedirect.com/science/article/pii/S2213956724002147 |
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