| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Hydrogen storage properties on mechanically milled graphite |
|
言語 |
en |
| 作成者 |
Ichikawa, Takayuki
Chen, D. M.
Isobe, Shigehito
Gomibuchi, Emi
Fujii, Hironobu
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2003 Elsevier B.V. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Hydrogen |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Graphite |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Catalysis |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Chemisorption |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Iron |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Carbides |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
420 |
| 内容記述 |
|
|
内容記述 |
We investigated hydrogen absorption/desorption and structural properties in mechanically milled graphite under hydrogen pressures up to 6 MPa to clarify catalytic and hydrogen pressure effects in the milling. The results indicate that a small amount of iron contamination during milling plays a quite important role as a catalyst for hydrogen absorption/desorption properties in graphite. Two-peak structure for hydrogen desorption in the TDS profile is due to existence of two different occupation sites for hydrogen, which is caused by the existence of high dispersing iron on graphite. From the experiment of high pressure milling, we clarified that the number of defects in graphite decreases with increasing the atmospheric hydrogen pressure during milling, leading to the decrease in the absorbed hydrogen content and the stabilization of hydrogen on the occupation sites. In addition, we confirmed the existence of physisorption-like reversible hydrogen at room temperature in the graphite prepared by milling under high pressure hydrogen atmosphere above 3 MPa. This unstable hydrogen might strongly be correlated with the existence of the lamella structure in nanometer scale, which only leaves in graphite prepared by high pressure milling. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier B.V. |
| 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 |
AO |
|
出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1016/j.mseb.2003.10.094 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1016/j.mseb.2003.10.094 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0921-5107 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10720431 |
| 開始ページ |
|
|
開始ページ |
138 |
| 書誌情報 |
Materials Science and Engineering B
Materials Science and Engineering B
巻 108,
号 1-2,
p. 138-142,
発行日 2004-04-25
|
| 旧ID |
20047 |
MSEB_108_1-2_138.pdf (350.3 KB)
