TY - JOUR

T1 - La-Ni-H metal hydride system aging effects identification

AU - Shang, Yuanyuan

AU - Chen, Ting

AU - Karimi, Fahim

AU - Le, Thi Thu

AU - Markmann, Jürgen

AU - Embs, Jan Peter

AU - Klusemann, Benjamin

AU - Klassen, Thomas

AU - Pistidda, Claudio

N1 - Publisher Copyright: © 2025 The Authors

PY - 2025/4/15

Y1 - 2025/4/15

N2 - One of the most commonly used materials for sorption compression in space applications is based on the La-Ni-H system. The degradation of the material properties and, therefore, the system lifetime is of great importance for the final success of a potential space mission. Considering that satellites and other equipment that have to operate in space are expected to be fully functional for more than 10 years, in this work, an accelerated aging method is designed and carried out to predict the La-Ni-H system properties after 12 years under specific operating conditions. For this test, several specimens of fully hydrogenated LaNi5 are exposed to specific hydrogen pressures (i.e., 20, 35, 58 and 96 bar) at different temperatures (i.e., 50, 90, 130 and 160 °C) for a duration of 90 days. Sievert's type apparatus, synchrotron radiation powder X-ray diffraction (SR-PXD), quasi-elastic neutron scattering (QENS), scanning electron microscopy (SEM), and small-angle X-ray scattering (SAXS) methods are used to investigate the material aging and its impact on the material chemical and microstructural properties.

AB - One of the most commonly used materials for sorption compression in space applications is based on the La-Ni-H system. The degradation of the material properties and, therefore, the system lifetime is of great importance for the final success of a potential space mission. Considering that satellites and other equipment that have to operate in space are expected to be fully functional for more than 10 years, in this work, an accelerated aging method is designed and carried out to predict the La-Ni-H system properties after 12 years under specific operating conditions. For this test, several specimens of fully hydrogenated LaNi5 are exposed to specific hydrogen pressures (i.e., 20, 35, 58 and 96 bar) at different temperatures (i.e., 50, 90, 130 and 160 °C) for a duration of 90 days. Sievert's type apparatus, synchrotron radiation powder X-ray diffraction (SR-PXD), quasi-elastic neutron scattering (QENS), scanning electron microscopy (SEM), and small-angle X-ray scattering (SAXS) methods are used to investigate the material aging and its impact on the material chemical and microstructural properties.

KW - Aging effect

KW - Hydrogen storage

KW - Metal hydride

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=105000285337&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2025.161682

DO - 10.1016/j.cej.2025.161682

M3 - Journal articles

AN - SCOPUS:105000285337

VL - 510

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

M1 - 161682

ER -