Related Papers
Mechanical activation of TiFe for hydrogen storage
2020 •
Ricardo Mendes Leal Neto
International Journal of Hydrogen Energy
Titanium-iron-manganese (TiFe0.85Mn0.15) alloy for hydrogen storage: Reactivation upon oxidation
2019 •
Poojan Modi
International Journal of Hydrogen Energy
An alternative route to produce easily activated nanocrystalline TiFe powder
2018 •
Ricardo Mendes Leal Neto
Scale-up of milling in a 100 L device for processing of TiFeMn alloy for hydrogen storage applications: Procedure and characterization
Scale-up of milling in a 100 L device for processing of TiFeMn alloy for hydrogen storage applications: Procedure and characterization
2019 •
Julián Puszkiel, Hans Ulrich Benz
In this work, the mechanical milling of a FeTiMn alloy for hydrogen storage purposes was performed in an industrial milling device. The TiFe hydride is interesting from the technological standpoint because of the abundance and the low cost of its constituent elements Ti and Fe, as well as its high volumetric hydrogen capacity. However, TiFe is difficult to activate, usually requiring a thermal treatment above 400 ºC. A TiFeMn alloy milled for just 10 min in a 100 L industrial milling device showed excellent hydrogen storage properties without any thermal treatment. The as-milled TiFeMn alloy did not need any activation procedure and showed fast kinetic behavior and good cycling stability. Microstructural and morphological characterization of the as-received and as-milled TiFeMn alloys revealed that the material presents reduced particle and crystallite sizes, even after such short time of milling. The refined microstructure of the as-milled TiFeMn is deemed to account for the improved hydrogen absorption-desorption properties.
International journal of …
Effect of nickel alloying by using ball milling on the hydrogen absorption properties of TiFe
1999 •
Frederick Schatz
The intermetallic compounds absorbing large amounts of hydrogen (LaNi 5 , TiFe, Mg 2 Ni, Laves phases, . . .) present a great interest for integrated or massive energy storage applications. One of the most important steps for the practical use of these ternary hydrides is the activation ...
Influence of Gaseous Activation on Hydrogen Sorption Properties of TiNi and Ti2Ni Alloys
Mateusz Balcerzak
MRS Proceedings
Hydrogen Storage in Titanium-Magnesium-Nickel Mixtures
2002 •
Michael Hampton
ABSTRACTThe hydrogen interaction properties of mechanically alloyed mixtures of Ti, Mg, and Ni have been shown to be strongly dependent on the time and energy of ball milling. Mixtures ball milled at a ball to powder ratio (by mass) of 20:1 were able to absorb 3–4 wt% hydrogen. Mixtures ball milled at a ball to powder ratio of 70:1 were able to absorb up to 11 wt% hydrogen. The dependence of hydrogen uptake on ball milling time and energy is shown to be related to the microstructural morphology of the ball milled powders. The original Mg powder particles were heavily deformed by the ball milling process and contained nano-sized inclusions of both Ti and Ni at the surface. The higher energy ball milled samples showed a more refined microstructure and a greater hydrogen capacity. In addition, there was an inverse relationship between the amount of hydrogen uptake and the size of inclusions at the surface of the particles.
Journal of Alloys and Compounds
Study of the kinetics of hydrogen sorption and desorption from titanium
2005 •
Igor Gabis
Magnesium-based hydrogen storage nanomaterials prepared by high energy reactive ball milling in hydrogen at the presence of mixed titanium–iron oxide
Johannes mlandu Sibanyoni, Mykhaylo Lototsky, Jonathan Goh
An experimental study was undertaken on the preparation, by High Energy Reactive Ball Milling in Hydrogen (HRBM), of hydrogen storage materials on the basis of Mg mixed with FeTiO3, and their further characterisation (SEM, TEM, XRD, volumetric H2 absorption studies, TDS). It was shown that the addition ofP5 wt.% of FeTiO3 dramatically improves H absorption in Mg and reduces the temperature of further H desorption. Subsequent addition of carbon, including Graphite (G), Activated Carbon (AC) and Multi-Wall Carbon Nanotubes (MWCNT) results in some slowing of the H absorption down but significantly improves re-hydrogenation performances of the material, which in time is able to re-absorb about 5 wt.% H in less than 5–7 min (15 bar H2/250 C). These improvements were associated with the reduction of FeTiO3 to yield nanoparticles of Fe and TiFe(Hx).
Hydrogen absorption of TiFe alloy synthesized by ball milling and post-annealing
L C Valdés L
The correlation of the hydrogen absorption properties to the phase structure of the TiFe alloys prepared by mechanical allying was investigated. In the mechanical alloying process, the crystalline or amorphous phases of TiFe alloy were formed. It found that TiFe amorphous phase recrystallized around 750 K. From the above results, the mixture of Ti and Fe prepared by short period ball milling was post annealed over 773 K. As the results, TiFe alloy was successfully synthesized. These TiFe alloys are able to absorb the hydrogen without activated treatment and it was found that the plateau pressure was controlled by post-annealing temperature.
