Activation process in hydrogen storage related to oxide layers formed on zirconium alloys

Preparation of platinum-decorated porous graphite nanofibers, and their hydrogen storage behaviors

“…There are five available methods to store hydrogen, including metal hydrides, H 2 liquefaction, H 2 -gas compression, electrosorption, and physisorption. Among them, physisorption is the most attractive, owing to its reversible storage reaction and safety [4][5][6][7][8]. In recent years, there has been considerable experimental and theoretical interest in the use of nanostructured or porous carbons.…”

Direct and low energy electrolytic co-reduction of mixed oxides to zirconium-based multi-phase hydrogen storage alloys in molten salts

“…25,26 However, pre-treatments of these previous materials were necessary to overcome the slow activation and discharge rate. Examples of the pre-treatment methods include periodic voltammetric scans, 27 etching in KOH based solutions, 28,29 and mechanical processing. 30 Herein we report, for the first time, the preparation of the AB 2type Zr-based HSA powders, namely ZrCr 2 , ZrCr 0.7 Ni 1.3 and Zr 0.5 Ti 0.5 V 0.5 Cr 0.2 Ni 1.3 , by direct electro-reduction of mixtures of the respective metal oxides in molten CaCl 2 .…”