Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption
Realizing rapid and stable hydrogen sorption at low temperature is critical for magnesium-based hydrogen storage materials. Herein, liquid channels are built in magnesium hydride by introducing lithium borohydride ion conductors as an efficient route for improving its hydrogen sorption. For instance...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/11/5/216 |
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| author | Zhi-Kang Qin Li-Qing He Xiao-Li Ding Ting-Zhi Si Ping Cui Hai-Wen Li Yong-Tao Li |
| author_facet | Zhi-Kang Qin Li-Qing He Xiao-Li Ding Ting-Zhi Si Ping Cui Hai-Wen Li Yong-Tao Li |
| author_sort | Zhi-Kang Qin |
| collection | DOAJ |
| description | Realizing rapid and stable hydrogen sorption at low temperature is critical for magnesium-based hydrogen storage materials. Herein, liquid channels are built in magnesium hydride by introducing lithium borohydride ion conductors as an efficient route for improving its hydrogen sorption. For instance, the 5 wt% LiBH<sub>4</sub>-doped MgH<sub>2</sub> can release about 7.1 wt.% H<sub>2</sub> within 40 min at 300 °C but pure MgH<sub>2</sub> only desorbs less than 0.7 wt.% H<sub>2</sub>, and more importantly it delivers faster desorption kinetics with more than 10 times enhancement to pure MgH<sub>2</sub>. The hydrogen absorption capacity of LiBH<sub>4</sub>-doped MgH<sub>2</sub> can still be well kept at approximately 7.2 wt.% without obvious capacity degradation even after six absorption and desorption cycles. This approach is not only through building ion transfer channels as a hydrogen carrier for kinetic enhancement but also by inhibiting the agglomeration of MgH<sub>2</sub> particles to obtain stable cyclic performance, which brings further insights to promoting the hydrogen ab-/desorption of other metal hydrides. |
| first_indexed | 2024-03-11T03:38:48Z |
| format | Article |
| id | doaj.art-a5476548f2f143e3883830b1adb86bee |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-11T03:38:48Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-a5476548f2f143e3883830b1adb86bee2023-11-18T01:49:16ZengMDPI AGInorganics2304-67402023-05-0111521610.3390/inorganics11050216Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen SorptionZhi-Kang Qin0Li-Qing He1Xiao-Li Ding2Ting-Zhi Si3Ping Cui4Hai-Wen Li5Yong-Tao Li6School of Materials Science and Engineering & Low-Carbon New Materials Research Center, Anhui University of Technology, Maanshan 243002, ChinaHefei General Machinery Research Institute, Hefei 230031, ChinaSchool of Materials Science and Engineering & Low-Carbon New Materials Research Center, Anhui University of Technology, Maanshan 243002, ChinaSchool of Materials Science and Engineering & Low-Carbon New Materials Research Center, Anhui University of Technology, Maanshan 243002, ChinaSchool of Materials Science and Engineering & Low-Carbon New Materials Research Center, Anhui University of Technology, Maanshan 243002, ChinaHefei General Machinery Research Institute, Hefei 230031, ChinaSchool of Materials Science and Engineering & Low-Carbon New Materials Research Center, Anhui University of Technology, Maanshan 243002, ChinaRealizing rapid and stable hydrogen sorption at low temperature is critical for magnesium-based hydrogen storage materials. Herein, liquid channels are built in magnesium hydride by introducing lithium borohydride ion conductors as an efficient route for improving its hydrogen sorption. For instance, the 5 wt% LiBH<sub>4</sub>-doped MgH<sub>2</sub> can release about 7.1 wt.% H<sub>2</sub> within 40 min at 300 °C but pure MgH<sub>2</sub> only desorbs less than 0.7 wt.% H<sub>2</sub>, and more importantly it delivers faster desorption kinetics with more than 10 times enhancement to pure MgH<sub>2</sub>. The hydrogen absorption capacity of LiBH<sub>4</sub>-doped MgH<sub>2</sub> can still be well kept at approximately 7.2 wt.% without obvious capacity degradation even after six absorption and desorption cycles. This approach is not only through building ion transfer channels as a hydrogen carrier for kinetic enhancement but also by inhibiting the agglomeration of MgH<sub>2</sub> particles to obtain stable cyclic performance, which brings further insights to promoting the hydrogen ab-/desorption of other metal hydrides.https://www.mdpi.com/2304-6740/11/5/216hydrogen storage materialsmagnesium hydridesborohydridesliquid channelskinetics |
| spellingShingle | Zhi-Kang Qin Li-Qing He Xiao-Li Ding Ting-Zhi Si Ping Cui Hai-Wen Li Yong-Tao Li Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption Inorganics hydrogen storage materials magnesium hydrides borohydrides liquid channels kinetics |
| title | Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption |
| title_full | Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption |
| title_fullStr | Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption |
| title_full_unstemmed | Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption |
| title_short | Liquid Channels Built-In Solid Magnesium Hydrides for Boosting Hydrogen Sorption |
| title_sort | liquid channels built in solid magnesium hydrides for boosting hydrogen sorption |
| topic | hydrogen storage materials magnesium hydrides borohydrides liquid channels kinetics |
| url | https://www.mdpi.com/2304-6740/11/5/216 |
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