Synchrotron EXAFS and XRD studies of Ti-V-Cr hydrogen absorbing alloy

被引：15

作者：

Wan, Chubin ^{[1
]}

Ju, Xin ^{[1
]}

Qi, Ying ^{[1
]}

Xin, Yong ^{[1
]}

Qiu, Jie ^{[1
]}

Wang, Shumao ^{[2
]}

Liu, Xiaopeng ^{[2
]}

Jiang, Lijun ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China

[2] Gen Res Inst NonFerrous Met, Beijing 100088, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 07期

关键词：

EXAFS; XRD; SAXS; Ti-V-Cr alloy; SOLID-SOLUTION; ELECTROCHEMICAL PROPERTIES; PHASE STRUCTURES; STORAGE; ABSORPTION; HYDRIDES; BATTERY; TICRV;

D O I：

10.1016/j.ijhydene.2009.05.034

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：

We reported extended X-ray absorption fine structure (EXAFS) measurements at the Ti, V and Cr K-absorption edges in a Ti-V-Cr alloy before and after hydrogen charging. The results indicated that all the bond lengths increased significantly after hydrogenation, and Ti atoms interacted strongly with V, while V and Cr atoms interacted weakly. The Ti and V atom's coordination numbers in hydrogenated alloy decreased obviously in comparison with the pre-hydrogenation situation. X-ray diffraction (XRD) patterns demonstrated that the structure of Ti-V-Cr alloy had transformed from BCC to FCC during hydrogenation. In addition, we investigated the nanoparticle size distribution in the as-cast and hydrogenated Ti-V-Cr alloy by small-angle X-ray scattering (SAXS) technique. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：2915 / 2920

页数：6

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