Engineering

Bulk modulus

Ecology

Biology

Materials science

Enthalpy

Density functional theory

Debye

Perovskite (structure)

Inorganic chemistry

Chemical engineering

Hydrogen storage

Physical chemistry

Type (biology)

Gravimetric analysis

Thermodynamics

Hydrogen

Physics

Organic chemistry

Optics

Lattice constant

Computational chemistry

Debye model

Crystallography

Chemistry

Diffraction

International Journal of Quantum Chemistry

Hydrogen can be utilized as an energy source; therefore, hydrogen storage has received the most appealing examination interest in recent years. The investigations of hydrogen storage applications center fundamentally around the examination of hydrogen capacity abilities of recently presented compounds. XSrH 3 (X = K and Rb) compounds have been examined by density functional theory (DFT) calculations to uncover their different characteristics, as well as hydrogen capacity properties, for the first time. Studied compounds are optimized in the cubic phase, and optimized lattice constants are obtained as 4.77 and 4.99 Å for KSrH 3 and RbSrH 3 , respectively. These hydrides have shown negative values of formation enthalpies as they are stable thermodynamically. XSrH 3 might be used in hydrogen storage applications because of high gravimetric hydrogen storage densities, which are 2.33 and 1.71 wt% for KSrH 3 and RbSrH 3 , respectively. Moreover, electronic properties confirm the semiconductor nature of these compounds having indirect band gaps of values 1.41 and 1.23 eV for KSrH 3 and RbSrH 3 , respectively. In addition, mechanical properties from elastic constants such as Young modulus and Pugh's ratio, also have been investigated, and these compounds were found to satisfy born stability conditions. Furthermore, Pugh's ratio and Cauchy pressure show that these hydrides have a brittle nature. Furthermore, thermodynamic properties such as entropy and Debye temperature have been examined using the quasiharmonic Debye model for different temperatures and pressures.

First‐principle investigation of <scp>XSrH<sub>3</sub></scp> (X = K and Rb) perovskite‐type hydrides for hydrogen storage

First‐principle investigation of XSrH3 (X = K and Rb) perovskite‐type hydrides for hydrogen storage

First‐principle investigation of XSrH₃ (X = K and Rb) perovskite‐type hydrides for hydrogen storage