Hydrogen sorption in Pd-decorated Mg-MgO core-shell nanoparticles

被引：37

作者：

Callini, E. ^{[1
,2
]}

Pasquini, L. ^{[1
,2
]}

Piscopiello, E. ^{[3
]}

Montone, A. ^{[4
]}

Antisari, M. Vittori ^{[4
]}

Bonetti, E. ^{[1
,2
]}

机构：

[1] Univ Bologna, Dept Phys, I-40127 Bologna, Italy

[2] CNISM, I-40127 Bologna, Italy

[3] ENEA, I-72100 Brindisi, Italy

[4] ENEA, I-00123 Rome, Italy

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 22期

关键词：

desorption; hydrogen; nanoparticles; nucleation; transmission electron microscopy; X-ray diffraction; DEHYDRIDING KINETICS; THIN-FILMS; STORAGE; MECHANISM;

D O I：

10.1063/1.3147205

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Mg nanoparticles with metal-oxide core-shell morphology were synthesized by inert-gas condensation and decorated by in situ Pd deposition. Transmission electron microscopy and x-ray diffraction underline the formation of a noncontinuous layer with Pd clusters on top of the MgO shell. Even in the presence of a thick MgO interlayer, a modest (2 at. %) Pd decoration deeply enhances the hydrogen sorption properties: previously inert nanoparticles exhibit metal-hydride transformation with fast kinetics and gravimetric capacity above 5 wt %.

引用

页数：3

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