A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption
Storing hydrogen in solid metal hydrides provides a safe and efficient storage approach. However, the large volume expansion of metal hydrides during hydrogen absorption imposes substantial stresses on the wall of a hydrogen storage tank. In this study, volume expansion behavior of a V-based hydroge...
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MDPI AG
2024-12-01
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| Series: | Inorganics |
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| author | Mojia Li Yunfeng Hu Hanyang Kong Qiuwei Huang Yusong Chen Yigang Yan |
| author_facet | Mojia Li Yunfeng Hu Hanyang Kong Qiuwei Huang Yusong Chen Yigang Yan |
| author_sort | Mojia Li |
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| description | Storing hydrogen in solid metal hydrides provides a safe and efficient storage approach. However, the large volume expansion of metal hydrides during hydrogen absorption imposes substantial stresses on the wall of a hydrogen storage tank. In this study, volume expansion behavior of a V-based hydrogen storage alloy, V<sub>61</sub>Cr<sub>24</sub>Ti<sub>12</sub>Ce<sub>3</sub>, with body-centered-cubic, was investigated using a self-developed in situ expansion testing device. The lattice expansion of the V<sub>61</sub>Cr<sub>24</sub>Ti<sub>12</sub>Ce<sub>3</sub> alloy after full hydrogenation was determined to be 37.85% using X-ray diffraction(XRD). The powder bed, composed of alloy powder with an average size of 3.35 mm in diameter, displays a large volume expansion ratio of 131% at the first hydrogen absorption cycle and 40–45% in the following four cycles. The stable compact bed, made of alloy powders, organic silicone gel, and graphite flakes, shows significantly smaller volume expansion ratio, which is 97% at the first cycle and 21% at the second cycle, and stabilizes at 13% in the following cycles. Also, the compact bed shows similar hydrogen absorption capacity, but faster absorption kinetics compared to the powder bed. |
| format | Article |
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| publishDate | 2024-12-01 |
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| spelling | doaj-art-5ac7e564178a48b7b2c35317998f29a02025-08-20T02:00:38ZengMDPI AGInorganics2304-67402024-12-01121231810.3390/inorganics12120318A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen SorptionMojia Li0Yunfeng Hu1Hanyang Kong2Qiuwei Huang3Yusong Chen4Yigang Yan5Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, ChinaKey Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaInstitute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, ChinaInstitute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, ChinaInstitute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, ChinaInstitute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, ChinaStoring hydrogen in solid metal hydrides provides a safe and efficient storage approach. However, the large volume expansion of metal hydrides during hydrogen absorption imposes substantial stresses on the wall of a hydrogen storage tank. In this study, volume expansion behavior of a V-based hydrogen storage alloy, V<sub>61</sub>Cr<sub>24</sub>Ti<sub>12</sub>Ce<sub>3</sub>, with body-centered-cubic, was investigated using a self-developed in situ expansion testing device. The lattice expansion of the V<sub>61</sub>Cr<sub>24</sub>Ti<sub>12</sub>Ce<sub>3</sub> alloy after full hydrogenation was determined to be 37.85% using X-ray diffraction(XRD). The powder bed, composed of alloy powder with an average size of 3.35 mm in diameter, displays a large volume expansion ratio of 131% at the first hydrogen absorption cycle and 40–45% in the following four cycles. The stable compact bed, made of alloy powders, organic silicone gel, and graphite flakes, shows significantly smaller volume expansion ratio, which is 97% at the first cycle and 21% at the second cycle, and stabilizes at 13% in the following cycles. Also, the compact bed shows similar hydrogen absorption capacity, but faster absorption kinetics compared to the powder bed.https://www.mdpi.com/2304-6740/12/12/318V-Ti-Cr alloyvolume expansionmetal hydride compactorganic silicone gelgraphite |
| spellingShingle | Mojia Li Yunfeng Hu Hanyang Kong Qiuwei Huang Yusong Chen Yigang Yan A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption Inorganics V-Ti-Cr alloy volume expansion metal hydride compact organic silicone gel graphite |
| title | A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption |
| title_full | A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption |
| title_fullStr | A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption |
| title_full_unstemmed | A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption |
| title_short | A Study on the Volume Expansion of Vanadium-Based Alloy Powders and Compacts During Hydrogen Sorption |
| title_sort | study on the volume expansion of vanadium based alloy powders and compacts during hydrogen sorption |
| topic | V-Ti-Cr alloy volume expansion metal hydride compact organic silicone gel graphite |
| url | https://www.mdpi.com/2304-6740/12/12/318 |
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