{"title":"非化学计量Mn和Cr对ti - Mn基合金储氢性能的影响","authors":"Qiuyang Pan, Hao Shen, Xingbo Han, Jianhui Zhu, Zhilin Li, Taijun Pan, Linhua Xu and Lijun Lv","doi":"10.1039/D5RA00542F","DOIUrl":null,"url":null,"abstract":"<p >The effects of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based Ti<small><sub>0.84</sub></small>Zr<small><sub>0.16</sub></small>Mn<small><sub>0.9+<em>x</em></sub></small>Cr<small><sub>0.7</sub></small>Fe<small><sub>0.1</sub></small> (<em>x</em> = 0, 0.1, 0.2) and Ti<small><sub>0.84</sub></small>Zr<small><sub>0.16</sub></small>Mn<small><sub>0.9</sub></small>Cr<small><sub>0.7+<em>y</em></sub></small>Fe<small><sub>0.1</sub></small> (<em>y</em> = 0, 0.1, 0.2, 0.3) alloys were investigated. The alloys were synthesized by arc melting and crystallized in a single C14-type Laves phase structure. With increasing Mn and Cr content, the equilibrium plateau pressures of the alloys during hydrogen absorption/desorption increased markedly, while the plateaus became flatter and the maximum hydrogen absorption capacities showed a slight decrease. Lower Mn/Cr ratios contribute to reduced hysteresis and lower plateau pressures. However, this improvement is associated with a decline in hydrogen storage capacity. The cyclic performance of the Ti<small><sub>0.84</sub></small>Zr<small><sub>0.16</sub></small>Mn<small><sub>0.9</sub></small>Cr<small><sub>0.7</sub></small>Fe<small><sub>0.1</sub></small> alloy, which exhibited excellent hydrogen storage properties, was studied. It was found that the capacity retention rate reached 96.2% after 500 hydrogenation–dehydrogenation cycles.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 22","pages":" 17153-17163"},"PeriodicalIF":3.9000,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00542f?page=search","citationCount":"0","resultStr":"{\"title\":\"Effect of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based alloys\",\"authors\":\"Qiuyang Pan, Hao Shen, Xingbo Han, Jianhui Zhu, Zhilin Li, Taijun Pan, Linhua Xu and Lijun Lv\",\"doi\":\"10.1039/D5RA00542F\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The effects of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based Ti<small><sub>0.84</sub></small>Zr<small><sub>0.16</sub></small>Mn<small><sub>0.9+<em>x</em></sub></small>Cr<small><sub>0.7</sub></small>Fe<small><sub>0.1</sub></small> (<em>x</em> = 0, 0.1, 0.2) and Ti<small><sub>0.84</sub></small>Zr<small><sub>0.16</sub></small>Mn<small><sub>0.9</sub></small>Cr<small><sub>0.7+<em>y</em></sub></small>Fe<small><sub>0.1</sub></small> (<em>y</em> = 0, 0.1, 0.2, 0.3) alloys were investigated. The alloys were synthesized by arc melting and crystallized in a single C14-type Laves phase structure. With increasing Mn and Cr content, the equilibrium plateau pressures of the alloys during hydrogen absorption/desorption increased markedly, while the plateaus became flatter and the maximum hydrogen absorption capacities showed a slight decrease. Lower Mn/Cr ratios contribute to reduced hysteresis and lower plateau pressures. However, this improvement is associated with a decline in hydrogen storage capacity. The cyclic performance of the Ti<small><sub>0.84</sub></small>Zr<small><sub>0.16</sub></small>Mn<small><sub>0.9</sub></small>Cr<small><sub>0.7</sub></small>Fe<small><sub>0.1</sub></small> alloy, which exhibited excellent hydrogen storage properties, was studied. It was found that the capacity retention rate reached 96.2% after 500 hydrogenation–dehydrogenation cycles.</p>\",\"PeriodicalId\":102,\"journal\":{\"name\":\"RSC Advances\",\"volume\":\" 22\",\"pages\":\" 17153-17163\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00542f?page=search\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"RSC Advances\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ra/d5ra00542f\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"RSC Advances","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ra/d5ra00542f","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based alloys
The effects of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based Ti0.84Zr0.16Mn0.9+xCr0.7Fe0.1 (x = 0, 0.1, 0.2) and Ti0.84Zr0.16Mn0.9Cr0.7+yFe0.1 (y = 0, 0.1, 0.2, 0.3) alloys were investigated. The alloys were synthesized by arc melting and crystallized in a single C14-type Laves phase structure. With increasing Mn and Cr content, the equilibrium plateau pressures of the alloys during hydrogen absorption/desorption increased markedly, while the plateaus became flatter and the maximum hydrogen absorption capacities showed a slight decrease. Lower Mn/Cr ratios contribute to reduced hysteresis and lower plateau pressures. However, this improvement is associated with a decline in hydrogen storage capacity. The cyclic performance of the Ti0.84Zr0.16Mn0.9Cr0.7Fe0.1 alloy, which exhibited excellent hydrogen storage properties, was studied. It was found that the capacity retention rate reached 96.2% after 500 hydrogenation–dehydrogenation cycles.
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An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.
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