Mg2NiH4 synthesis and decomposition reactions
M. Polanski , T.K. Nielsen , I. Kunce , M. Norek , Tomasz Płociński , Jakub Jaroszewicz , L.R. Gundlach , T.R. Jensen , J. Bystrzycki
AbstractA ternary Mg2NiH4 hydride was synthesized using method that relies on a relatively short mechanical milling time (one hour) of a 2:1 MgH2-Ni powder mixture followed by sintering at a sufficiently high hydrogen pressure (>85 bar) and temperature (>400 °C). The ternary hydride forms in less than 2.5 h (including the milling time) with a yield of ∼90% as a mixture of two polymorphic forms. The mechanisms of formation and decomposition of ternary Mg2NiH4 under different hydrogen pressures were studied in detail using an in situ synchrotron radiation powder X-ray diffraction (SR-PXD) and high pressure DSC. The obtained experimental results are supported by morphological and microstructural investigations performed using SEM and high resolution STEM. Additionally, effects occurring during the desorption reaction were studied using DSC coupled with mass spectrometry. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
|Journal series||International Journal of Hydrogen Energy, ISSN 0360-3199|
|Publication size in sheets||0.5|
|Keywords in English||Decomposition; High pressure DSC; In situ synchrotron radiation powder diffraction; Magnesium nickel hydride; Structure; Synthesis|
|ASJC Classification||; ; ;|
|Score|| = 35.0, 30-07-2020, ArticleFromJournal|
= 35.0, 30-07-2020, ArticleFromJournal
|Publication indicators||= 25; = 24; = 31.0; : 2013 = 1.442; : 2013 = 2.93 (2) - 2013=3.448 (5)|
|Citation count*||32 (2020-09-15)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.