Stress effects on the kinetics of hydrogen adsorption in a spherical particle: An analytical model

• Published in: International journal of hydrogen energy Vol. 40; no. 47; pp. 17009 - 17016
• Main Authors: Duda, Fernando P., Tomassetti, Giuseppe
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 21.12.2015
• Subjects: Hydrogen storage; Hysteresis; Nanoparticles; Phase transformation; Stress-assisted diffusion; Nanoparticles; Phase transformation; Hydrogen storage; Stress-assisted diffusion; Hysteresis
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2015.07.088

We consider a two-phase elastic solid subject to diffusion-induced phase transformation by interstitial hydrogen. We derive a simple analytical model to quantify the effect of misfit strain on the kinetic of phase transformation and to calculate the amplitude of the well-know hysteresis cycle observed when a sequence of forward and reverse phase transformations takes place. •We consider adsorption and desorption of interstitial hydrogen by a spherical particle.•The particle is modeled as a two-phase elastic solid partitioned by a sharp interface.•Elastic misfits are taken into account.•A differential equation governing the motion of the phase interface is derived.•A closed-form solution is obtained.