Impact of Nanostructuring on the Phase Behavior of Insertion Materials: The Hydrogenation Kinetics of a Magnesium Thin Film

被引：27

作者：

Bannenberg, Lars J. ^{[1
]}

Schreuders, Herman ^{[2
]}

van Eijck, Lambert ^{[1
]}

Heringa, Jouke R. ^{[1
]}

Steinke, Nina-Juliane ^{[3
]}

Dalgliesh, Robert ^{[3
]}

Dam, Bernard ^{[2
]}

Mulder, Fokko M. ^{[2
]}

van Well, Ad A. ^{[1
]}

机构：

[1] Delft Univ Technol, Dept Radiat Sci & Technol, Mekelweg 15, NL-2629 JB Delft, Netherlands

[2] Delft Univ Technol, Dept Chem Engn, Julianalaan 134, NL-2628 BL Delft, Netherlands

[3] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 19期

关键词：

METAL-HYDRIDES; STORAGE MATERIALS; INTERFACE ENERGY; NUCLEATION; GROWTH; THERMODYNAMICS; DIFFRACTION; SOLUBILITY; CATALYSTS; CAPACITY;

D O I：

10.1021/acs.jpcc.6b02302

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：

Nanostructuring is widely applied in both battery and hydrogen materials to improve the performance of these materials as energy carriers. Nanostructuring changes the diffusion length as well as the thermodynamics of materials. We studied the impact of nanostructuring on the hydrogenation in a model system consisting of a thin film of magnesium sandwiched between two titanium layers and capped with palladium. While we verified optically the coexistence of the metallic alpha-MgDx and the insulating beta-MgD2-y), phase, neutron reflectometry shows significant deviations from the thermodynamic solubility limits in bulk magnesium during the phase transformation. This suggests that the kinetics of the phase transformation in nanostructured battery and hydrogen storage systems is enhanced not only as a result of the reduced length scale but also due to the increased solubility in the parent phases.

引用

页码：10185 / 10191

页数：7

共 31 条

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