Pulsed Electrodeposition Synthesis and Hydrogen Absorption Properties of Nanostructured Palladium‐Iron Alloy Films

1998 ◽  
Vol 145 (10) ◽  
pp. 3339-3346 ◽  
Author(s):  
Kenneth J. Bryden ◽  
Jackie Y. Ying
Keyword(s):  
Hydrogen Absorption ◽  
Iron Alloy ◽  
Absorption Properties ◽  
Alloy Films ◽  
Pulsed Electrodeposition

A systematic neutron reflectometry study on hydrogen absorption in thin Mg1-xAlx alloy films Special issue on Neutron Scattering in Canada.

2010 ◽  
Vol 88 (10) ◽  
pp. 723-728 ◽  
Author(s):  
H. Fritzsche ◽  
E. Poirier ◽  
J. Haagsma ◽  
C. Ophus ◽  
E. Luber ◽  
...  
Keyword(s):  
Hydrogen Absorption ◽  
Scattering Length ◽  
Catalyst Layer ◽  
Neutron Reflectometry ◽  
Hydrogen Distribution ◽  
Hydrogen Atoms ◽  
Alloy Films ◽  
Negative Scattering Length ◽  
Insight Into ◽  
Optimum Alloy

In this article, we show how neutron reflectometry (NR) can provide deep insight into the absorption and desorption properties of commercially promising hydrogen storage materials. NR benefits from the large negative scattering length of hydrogen atoms, which changes the reflectivity curve substantially, so that NR can determine not only the total amount of stored hydrogen but also the hydrogen distribution along the film normal, with nanometer resolution. To use NR, the samples must have smooth surfaces, and the film thickness should range between 10 and 200 nm. We performed a systematic study on thin Mg1–xAlx alloy films (x = 0.2, 0.3, 0.4, 0.67) capped with a Pd catalyst layer. Our NR experiments showed that Mg0.7Al0.3 is the optimum alloy composition with the highest amount of stored hydrogen and the lowest desorption temperature. All the thin films expand by about 20% because of hydrogen absorption, and the hydrogen is stored only in the MgAl layer with no hydrogen content in the Pd layer.

Hydrogen absorption properties of the -Mg17Al12 phase and its Al-richer domain

2007 ◽  
Vol 446-447 ◽  
pp. 157-161 ◽  
Author(s):  
J.-C. Crivello ◽  
T. Nobuki ◽  
S. Kato ◽  
M. Abe ◽  
T. Kuji
Keyword(s):  
Hydrogen Absorption ◽  
Absorption Properties ◽  
Mg17al12 Phase

scholarly journals Hydrogen Absorption Properties of Zr-V-M(M=Fe, Ga, Y) Getter Alloys

2005 ◽  
Vol 15 (6) ◽  
pp. 388-392
Author(s):  
Je-Shin Park ◽  
Chang-Youl Suh ◽  
Won-Baek Kim
Keyword(s):  
Hydrogen Absorption ◽  
Absorption Properties

The Effect of Initial Activation on Microstructures of Mg/Cu Super-laminates and Hydrogen Absorption Properties

2007 ◽  
Vol 1042 ◽  
Author(s):  
Koji Tanaka ◽  
Nobuhiko Takeichi ◽  
Hideaki Tanaka ◽  
Nobuhiro Kuriyama ◽  
Tamotsu T Ueda ◽  
...  
Keyword(s):  
Hydrogen Absorption ◽  
Diffusion Distance ◽  
Absorption Properties ◽  
Hydrogen Storage Properties ◽  
Fine Grain ◽  
Nano Structures ◽  
Initial Activation ◽  
Micrometer Size ◽  
Storage Properties ◽  
Short Diffusion Distance

AbstractMicrostructures and hydrogen storage properties of Mg/Cu super-laminates were compared to clarify the effect of initial activation. The initial activation change micro/nano-structures of Mg/Cu super-laminates into Mg2Cu with layered structure in fine grain size of about 1μm and pores highly dispersed between layers in sub-micrometer size. Large surface area, dense defects and short diffusion distance for the reaction enable Mg/Cu super-laminates to absorb hydrogen very quickly.

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