TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure
A designed Mg88.7Ni6.3Y5 hydrogen storage alloy containing 14H type LPSO (long-period stacking ordered) and ternary eutectic structure was prepared by regulating the alloy composition and casting. The hydrogen storage performance of the alloy was improved by adding nano-flower-like TiO2@C catalyst....
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2024-02-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221395672300083X |
| _version_ | 1797261825215037440 |
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| author | Wenjie Song Wenhao Ma Shuai He Wei Chen Jianghua Shen Dalin Sun Qiuming Wei Xuebin Yu |
| author_facet | Wenjie Song Wenhao Ma Shuai He Wei Chen Jianghua Shen Dalin Sun Qiuming Wei Xuebin Yu |
| author_sort | Wenjie Song |
| collection | DOAJ |
| description | A designed Mg88.7Ni6.3Y5 hydrogen storage alloy containing 14H type LPSO (long-period stacking ordered) and ternary eutectic structure was prepared by regulating the alloy composition and casting. The hydrogen storage performance of the alloy was improved by adding nano-flower-like TiO2@C catalyst. The decomposition of the LPSO structure during hydrogenation led to the formation of plenty of nanocrystals which provided abundant interphase boundaries and activation sites. The nanoscale TiO2@C catalyst was uniformly dispersed on the surface of alloy particles, and the ''hydrogen overflow'' effect of TiO2@C accelerated the dissociation and diffusion of hydrogen on the surface of the alloy particles. As a result, the in-situ endogenous nanocrystals of the LPSO structure decomposition and the externally added flower-like TiO2@C catalyst uniformly dispersed on the surface of the nanoparticles played a synergistic catalytic role in improving the hydrogen storage performance of the Mg-based alloy. With the addition of the TiO2@C catalyst, the beginning hydrogen desorption temperature was reduced to 200 °C. Furthermore, the saturated hydrogen absorption capacity of the sample was 5.32 wt.%, and it reached 4.25 wt.% H2 in 1 min at 200 °C and 30 bar. |
| first_indexed | 2024-04-24T23:47:22Z |
| format | Article |
| id | doaj.art-232a77a4323f4ce28a45cbc93accc139 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T23:47:22Z |
| publishDate | 2024-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-232a77a4323f4ce28a45cbc93accc1392024-03-15T04:43:25ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672024-02-01122767778TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structureWenjie Song0Wenhao Ma1Shuai He2Wei Chen3Jianghua Shen4Dalin Sun5Qiuming Wei6Xuebin Yu7College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, China; Department of Materials Science, Fudan University, Shanghai 200438, China; Corresponding authors.College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, ChinaCollege of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, ChinaDepartment of Materials Science, Fudan University, Shanghai 200438, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, ChinaDepartment of Materials Science, Fudan University, Shanghai 200438, ChinaDepartment of Mechanical Engineering & Engineering Science, the University of North Carolina at Charlotte, Charlotte, North Carolina 28223, United States of AmericaDepartment of Materials Science, Fudan University, Shanghai 200438, China; Corresponding authors.A designed Mg88.7Ni6.3Y5 hydrogen storage alloy containing 14H type LPSO (long-period stacking ordered) and ternary eutectic structure was prepared by regulating the alloy composition and casting. The hydrogen storage performance of the alloy was improved by adding nano-flower-like TiO2@C catalyst. The decomposition of the LPSO structure during hydrogenation led to the formation of plenty of nanocrystals which provided abundant interphase boundaries and activation sites. The nanoscale TiO2@C catalyst was uniformly dispersed on the surface of alloy particles, and the ''hydrogen overflow'' effect of TiO2@C accelerated the dissociation and diffusion of hydrogen on the surface of the alloy particles. As a result, the in-situ endogenous nanocrystals of the LPSO structure decomposition and the externally added flower-like TiO2@C catalyst uniformly dispersed on the surface of the nanoparticles played a synergistic catalytic role in improving the hydrogen storage performance of the Mg-based alloy. With the addition of the TiO2@C catalyst, the beginning hydrogen desorption temperature was reduced to 200 °C. Furthermore, the saturated hydrogen absorption capacity of the sample was 5.32 wt.%, and it reached 4.25 wt.% H2 in 1 min at 200 °C and 30 bar.http://www.sciencedirect.com/science/article/pii/S221395672300083XHydrogen storageMgLPSOTiO2@CSynergistic catalysis |
| spellingShingle | Wenjie Song Wenhao Ma Shuai He Wei Chen Jianghua Shen Dalin Sun Qiuming Wei Xuebin Yu TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure Journal of Magnesium and Alloys Hydrogen storage Mg LPSO TiO2@C Synergistic catalysis |
| title | TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure |
| title_full | TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure |
| title_fullStr | TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure |
| title_full_unstemmed | TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure |
| title_short | TiO2@C catalyzed hydrogen storage performance of Mg-Ni-Y alloy with LPSO and ternary eutectic structure |
| title_sort | tio2 c catalyzed hydrogen storage performance of mg ni y alloy with lpso and ternary eutectic structure |
| topic | Hydrogen storage Mg LPSO TiO2@C Synergistic catalysis |
| url | http://www.sciencedirect.com/science/article/pii/S221395672300083X |
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