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Durability on Hydrogen Absorption Properties of TiFe0.7Mn0.3 with Surface Modification by TiO2
https://hiroshima.repo.nii.ac.jp/records/2041599
https://hiroshima.repo.nii.ac.jp/records/2041599b00fe1b4-7e61-4c47-b191-e1b4d497f216
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JAC_1057_186843.pdf (1 MB)
Download is available from 2028/3/5.
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| Item type | デフォルト(1) | |||||||||||||||
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| 公開日 | 2026-02-25 | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | Durability on Hydrogen Absorption Properties of TiFe0.7Mn0.3 with Surface Modification by TiO2 | |||||||||||||||
| 言語 | en | |||||||||||||||
| 作成者 |
Yin, Chenghao
× Yin, Chenghao
× Chu, Tiancheng
× Guo, Fangqin
× Miyaoka, Hiroki
× Ichikawa, Takayuki
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| アクセス権 | ||||||||||||||||
| アクセス権 | embargoed access | |||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_f1cf | |||||||||||||||
| 権利情報 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 権利情報 | © <2026>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||||||||||||
| 権利情報 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 権利情報 | This is not the published version. Please cite only the published version. | |||||||||||||||
| 権利情報 | ||||||||||||||||
| 言語 | ja | |||||||||||||||
| 権利情報 | この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 | |||||||||||||||
| 主題 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | TiFe-based hydrogen storage alloys | |||||||||||||||
| 主題 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Surface modification | |||||||||||||||
| 主題 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Titanium dioxide | |||||||||||||||
| 主題 | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | Hydrogen absorption kinetics | |||||||||||||||
| 内容記述 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | This study systematically investigates the effect of different surface modification agents (acetone, graphite, BN, and TiO2) on the hydrogen absorption performance and oxidation resistance of TiFe0.7Mn0.3 hydrogen storage alloys. Based on the powder X-ray diffraction (XRD) measurements, hydrogen absorption kinetics analysis, and X-ray photoelectron spectroscopy (XPS) analyses, it is demonstrated that the chemical nature and stability of the surface-modified layers predominantly govern hydrogen absorption behavior. Acetone-added and milled TiFe0.7Mn0.3 alloys were shown to generate transient Ti–O–C oxycarbide phases, enabling rapid activation but resulting in only short-lived improvement due to fast oxidation. Graphite modification promotes the formation of TiC, consuming active Ti sites and significantly suppressing both initial kinetics and long-term durability. BN introduces a partially protective nitride/oxide layer that retards oxidation, allowing the alloy to retain measurable hydrogen absorption despite gradual kinetic degradation during aging. In contrast, TiO2 modification offers the most effective preservation of durability while maintaining the initial hydrogen absorption kinetics. Ball milling with TiO2 induces partial reduction of Ti species and strong interfacial electronic interactions in TiFe0.7Mn0.3, forming a modified layer with a Ti-Fe-Mn-O species that suppresses surface oxidation, stabilizes active Ti sites, and enhances hydrogen absorption kinetics and durability. Although prolonged aging gradually restores Ti⁴⁺ and Fe²⁺dominated surface states, the persistence of metallic species at early aging stages demonstrates that TiO2 modification effectively delays alloy deactivation and preserves partial hydrogen absorption activity. | |||||||||||||||
| 言語 | en | |||||||||||||||
| 内容記述 | ||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||
| 内容記述 | We gratefully acknowledge the financial support from JST SPRING, Grant Number JPMJSP2132, and the measurements of X-ray diffraction (XRD) were conducted at the Natural Science Center for Basic Research and Development (NBARD-2102483), Hiroshima University. |
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| 言語 | en | |||||||||||||||
| 出版者 | ||||||||||||||||
| 出版者 | Elsevier | |||||||||||||||
| 言語 | en | |||||||||||||||
| 日付 | ||||||||||||||||
| 日付 | 2028-03-05 | |||||||||||||||
| 日付タイプ | Available | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| 資源タイプ | ||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||
| 資源タイプ | journal article | |||||||||||||||
| 出版タイプ | ||||||||||||||||
| 出版タイプ | AM | |||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||
| 関連情報 | ||||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||
| 関連識別子 | https://doi.org/10.1016/j.jallcom.2026.186843 | |||||||||||||||
| 収録物識別子 | ||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||
| 収録物識別子 | 0925-8388 | |||||||||||||||
| 書誌情報 |
en : Journal of Alloys and Compounds 巻 1057, p. 186843, 発行日 2026-03-05 |
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| 言語 | en | |||||||||||||||
| 値 | The full-text file will be made open to the public on (5 March 2028) in accordance with publisher's 'Terms and Conditions for Self-Archiving' | |||||||||||||||
