Hydrogen absorption–desorption characteristics, kinetics of hydrogen absorption and thermodynamics of dissolved hydrogen in Zr0.1Tb0.9Fe1.5Co1.5

Structural, electrical and thermodynamical aspects of hydrogenated La-Ni-Si alloy

“…Sato and Yartys (2004) measured P-C-T isotherm volumetrically at temperatures between 258 and 453 K and calculated the partial molar enthalpy and entropy for LaNi 5 Sn-H system. Some other recent investigations of the thermodynamic properties of hydrogen absorption in various systems are by Jacob and Berznitsky (2002), Berznitsky and Jacob (2003) and Sivakumar et al (2000). Many efforts have been made to estimate the thermal conductivity (λ) and thermal diffusivity (χ), but simultaneous measurement of the above has not been made so far.…”

Electrical resistivity studies on ZrxTb1-xFe3(x= 0.2, 0.3) hydrides

“…The preparation and characterization of Zr 0.2 Tb 0.8 Fe 3 and Zr 0.3 Tb 0.7 Fe 3 alloys have been presented in an earlier communication [1,2]. The hydrogen absorption isotherms and kinetics studies were carried out using a high-pressure hydrogen absorption set-up based on a Sievertstype apparatus [4]. Before taking equilibrium measurements, the alloys were activated for hydrogen absorption as mentioned in [1].…”

“…Recently, the hydrogen solubility properties of Zr x Tb 1−x Fe 3 (x = 0.1, 0.2, 0.3) and Zr x Tb 1−x Fe 1.5 Co 1.5 (x = 0.1, 0.2, 0.3) systems have been studied. The presence of α, (α + β) and β phases have been identified using two different techniques, namely (i) from the dependence of H H and S H on the hydrogen concentration and (ii) from kinetics studies by fitting the experimental data to a second-order equation [1][2][3][4]. Occlusion of hydrogen in the host matrix modifies the electrical properties.…”

Interstitial hydrogen diffusion in Mm Tb1−Co2–H (x= 0, 0.1 and 0.2)

“…In particular, alloys of formula RT 2 (where R is a rare earth and T is a 3d transition metal) having the cubic C15 type Laves phase structure have been the subject of extensive hydrogen absorption studies [27][28][29][30][31][32][33][34][35][36]. Rare earth based alloys are of high cost and so there is a need to search for materials, which have good hydrogen storage properties and are economically viable.…”