Alloying effects on the hydride formation of Zr(Mn1-xCo x)2

Masanori Hara; Kaori Yudou; Emiko Kinoshita; Kayoko Okazaki; Kazuyoshi Ichinose; Kuniaki Watanabe; Masao Matsuyama

doi:10.1016/j.ijhydene.2011.07.024

Alloying effects on the hydride formation of Zr(Mn_1-xCo _x)₂

Masanori Hara^*, Kaori Yudou, Emiko Kinoshita, Kayoko Okazaki, Kazuyoshi Ichinose, Kuniaki Watanabe, Masao Matsuyama

^*この論文の責任著者

研究推進機構水素同位体科学研究センター

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

9 被引用数 (Scopus)

抄録

To study the alloying effects on ZrMn₂-H system, thermodynamic properties of Zr(Mn_1-xCo_x)₂ hydride were measured by volumetric method. ZrMn₂ gave a single plateau region in the pressure-composition isotherm. On the other hand, double plateaus were clearly observed in Zr(Mn_0.7Co_0.3)₂ and Zr(Mn_0.6Co_0.4)₂-H systems. The appearance of the double plateau characteristics would be explained in view of the hydrogen binding in the tetrahedral occupation sites in Zr(Mn_1-xCo _x)₂. Since the hydrogen binding in the tetrahedral 2ZrMnCo site would be less stable than that in the 2Zr2Mn site, the equilibrium pressure increases with increasing cobalt content. The appearance of the first plateau was ascribed the increase in the bonding of Mn-H in 2Zr2Mn site adjoining the 2ZrMnCo site.

本文言語	英語
ページ（範囲）	12333-12337
ページ数	5
ジャーナル	International Journal of Hydrogen Energy
巻	36
号	19
DOI	https://doi.org/10.1016/j.ijhydene.2011.07.024
出版ステータス	出版済み - 2011/09

ASJC Scopus 主題領域

再生可能エネルギー、持続可能性、環境
燃料技術
凝縮系物理学
エネルギー工学および電力技術

UN SDG

この成果は、次の持続可能な開発目標に貢献しています

文献へのアクセス

10.1016/j.ijhydene.2011.07.024

引用スタイル

@article{99f3d8c8288343eab21e195d200fe399,

title = "Alloying effects on the hydride formation of Zr(Mn1-xCo x)2",

abstract = "To study the alloying effects on ZrMn2-H system, thermodynamic properties of Zr(Mn1-xCox)2 hydride were measured by volumetric method. ZrMn2 gave a single plateau region in the pressure-composition isotherm. On the other hand, double plateaus were clearly observed in Zr(Mn0.7Co0.3)2 and Zr(Mn0.6Co0.4)2-H systems. The appearance of the double plateau characteristics would be explained in view of the hydrogen binding in the tetrahedral occupation sites in Zr(Mn1-xCo x)2. Since the hydrogen binding in the tetrahedral 2ZrMnCo site would be less stable than that in the 2Zr2Mn site, the equilibrium pressure increases with increasing cobalt content. The appearance of the first plateau was ascribed the increase in the bonding of Mn-H in 2Zr2Mn site adjoining the 2ZrMnCo site.",

keywords = "Alloying effect, Double plateau, Hydrogen occupation site, ZrMn",

author = "Masanori Hara and Kaori Yudou and Emiko Kinoshita and Kayoko Okazaki and Kazuyoshi Ichinose and Kuniaki Watanabe and Masao Matsuyama",

year = "2011",

month = sep,

doi = "10.1016/j.ijhydene.2011.07.024",

language = "英語",

volume = "36",

pages = "12333--12337",

journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Alloying effects on the hydride formation of Zr(Mn1-xCo x)2

AU - Hara, Masanori

AU - Yudou, Kaori

AU - Kinoshita, Emiko

AU - Okazaki, Kayoko

AU - Ichinose, Kazuyoshi

AU - Watanabe, Kuniaki

AU - Matsuyama, Masao

PY - 2011/9

Y1 - 2011/9

N2 - To study the alloying effects on ZrMn2-H system, thermodynamic properties of Zr(Mn1-xCox)2 hydride were measured by volumetric method. ZrMn2 gave a single plateau region in the pressure-composition isotherm. On the other hand, double plateaus were clearly observed in Zr(Mn0.7Co0.3)2 and Zr(Mn0.6Co0.4)2-H systems. The appearance of the double plateau characteristics would be explained in view of the hydrogen binding in the tetrahedral occupation sites in Zr(Mn1-xCo x)2. Since the hydrogen binding in the tetrahedral 2ZrMnCo site would be less stable than that in the 2Zr2Mn site, the equilibrium pressure increases with increasing cobalt content. The appearance of the first plateau was ascribed the increase in the bonding of Mn-H in 2Zr2Mn site adjoining the 2ZrMnCo site.

AB - To study the alloying effects on ZrMn2-H system, thermodynamic properties of Zr(Mn1-xCox)2 hydride were measured by volumetric method. ZrMn2 gave a single plateau region in the pressure-composition isotherm. On the other hand, double plateaus were clearly observed in Zr(Mn0.7Co0.3)2 and Zr(Mn0.6Co0.4)2-H systems. The appearance of the double plateau characteristics would be explained in view of the hydrogen binding in the tetrahedral occupation sites in Zr(Mn1-xCo x)2. Since the hydrogen binding in the tetrahedral 2ZrMnCo site would be less stable than that in the 2Zr2Mn site, the equilibrium pressure increases with increasing cobalt content. The appearance of the first plateau was ascribed the increase in the bonding of Mn-H in 2Zr2Mn site adjoining the 2ZrMnCo site.

KW - Alloying effect

KW - Double plateau

KW - Hydrogen occupation site

KW - ZrMn

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U2 - 10.1016/j.ijhydene.2011.07.024

DO - 10.1016/j.ijhydene.2011.07.024

M3 - 学術論文

AN - SCOPUS:80052794418

SN - 0360-3199

VL - 36

SP - 12333

EP - 12337

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 19

ER -