Effect of h-BN additive on hydrogen sorption by Ti under mechanical treatment in H2/He flow

被引：9

作者：

Borchers, C. ^{[1
]}

Morozova, O. S. ^{[2
]}

Khomenko, T. I. ^{[2
]}

Leonov, A. V. ^{[3
]}

Postnikov, A. V. ^{[4
,5
]}

Kurmaev, E. Z. ^{[4
]}

Moewes, A. ^{[6
]}

Pundtt, A. ^{[1
]}

机构：

[1] Univ Gottingen, Inst Mat Phys, D-37077 Gottingen, Germany

[2] RAS, Semenov Chem Phys Inst, Moscow 119991, Russia

[3] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

[4] RAS, Ural Div, Inst Met Phys, Ekaterinburg 620041, Russia

[5] Paul Verlaine Univ, Inst Phys Electron & Chim, Lab Phys Milieux Denses, F-57078 Metz, France

[6] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 15期

关键词：

D O I：

10.1021/jp077582s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of h-BN additive on hydrogen sorption by Ti under mechanical treatment in H-2/He flow and on the thermal stability of Ti-hydride produced during milling were studied using kinetic, structural, microscopic, and spectroscopic techniques and theoretical first-principles calculations. The results obtained were compared with the corresponding properties of pure Ti and Ti with graphite additive. Like graphite, hexagonal BN was found to be an effective additive to improve the hydrogen sorption capacity of Ti. New types of occupation sites available for hydrogen, very similar to those detected for Ti/C, were observed. These sites are characterized by a low H-2 desorption temperature: 630-670 K instead of similar to 1000 K.

引用

页码：5869 / 5879

页数：11

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