نتایج جستجو برای: nanosizing

تعداد نتایج: 66  

2010
J. Gao R. Bogerd P. Ngene P. Adelhelm K. P. de Jong P. E. de Jongh

Introduction Light metal hydrides are candidates for compact and efficient reversible on-board hydrogen storage. However, at the moment no known material fulfills all requirements regarding hydrogen content, release temperature, and reversibility simultaneously. Binary light metal hydrides generally are thermodynamically too stable, while in addition boronhydrides, alanates and other complex sy...

2015
S. Maleki Dizaj Zh. Vazifehasl S. Salatin Kh. Adibkia Y. Javadzadeh

The solubility, bioavailability and dissolution rate of drugs are important parameters for achieving in vivo efficiency. The bioavailability of orally administered drugs depends on their ability to be absorbed via gastrointestinal tract. For drugs belonging to Class II of pharmaceutical classification, the absorption process is limited by drug dissolution rate in gastrointestinal media. Therefo...

Journal: :Nano letters 2010
Rahul Malik Damian Burch Martin Bazant Gerbrand Ceder

Diffusion constants are typically considered to be independent of particle size with the benefit of nanosizing materials arising solely from shortened transport paths. We show that for materials with one-dimensional atomic migration channels, the diffusion constant depends on particle size with diffusion in bulk being much slower than in nanoparticles. This model accounts for conflicting data o...

2017
Lei Wang

Lithium aluminum hydride (LiAlH4) is an interesting high capacity hydrogen storage material with fast hydrogen release kinetics when mechanically activated with additives. Herein, we report on a novel approach to produce nanoscale LiAlH4 via a bottom-up synthesis. Upon further coating of these nanoparticles with Ti, the composite nanomaterial was found to decompose at 120 ◦C in one single and e...

Journal: :International Journal of Hydrogen Energy 2021

Nanosizing of TiFe hydrogen storage alloy is conducted to facilitate its activation. Here, pure intermetallic nanoparticles (45 nm) were prepared using chemical reduction oxide precursors at 600 °C, which the lowest temperature ever used in synthesis. This was achieved a strong reducing agent (CaH2) molten LiCl. When for absorption, obtained surprisingly exhibited almost no absorption. The resu...

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