Improved H-Storage Performance of Novel Mg-Based Nanocomposites Prepared by High-Energy Ball Milling: A Review

Abstract

Hydrogen storage in magnesium-based composites has been an outstanding research area including a remarkable improvement of the H-sorption properties of this system in the last 5 years. Numerous additives of various morphologies have been applied with great success to accelerate the absorption/desorption reactions. Different combinations of catalysts and preparation conditions have also been explored to synthesize better hydrogen storing materials. At the same time, ball milling is still commonly and effectively applied for the fabrication of Mg-based alloys and composites in order to reduce the grain size to nanometric dimensions and to disperse the catalyst particles over the surface of the host material. In this review, we present the very recent progress, from 2016 to 2021, on catalyzing the hydrogen sorption of Mg-based materials by ball milling. The various catalyzing routes enhancing the hydrogenation performance, including in situ formation of catalysts and synergistic improvement achieved by using multiple additives, will also be summarized. At the end of this work, some thoughts on the prospects for future research will be highlighted.

Boosting the Dehydrogenation Properties of LiAlH4 by Addition of TiSiO4

“…The 10 wt% TiSiO 4 -added LiAlH 4 composite has a larger surface area due to the smaller particle sizes. Previous research has shown that surface modification significantly improves the hydrogen storage properties of metals and complex hydride materials [ 34 , 45 , 46 , 47 ].…”

Catalytic characteristics of titanium‐( IV )‐isopropoxide ( TTIP ) on de/re‐hydrogenation of wet ball‐milled MgH 2 / Mg

“…16,33,[49][50][51] However, high-energy ball-milling is one of the most commonly used techniques to reduce the particle size of MgH 2 . 16,50,[52][53][54][55] This approach is significantly less expensive, with a high yield for synthesizing materials in the nano range than other approaches like chemical cold rolling and annealing. 56,57 The yield of materials depends on the milling parameters like milling intensity (rpm), the ball to material ratio, milling time, and the process control agent (medium: liquid or gas).…”

“…Various techniques explore the synthesis of catalyzed and uncatalyzed MgH 2 16,33,49‐51 . However, high‐energy ball‐milling is one of the most commonly used techniques to reduce the particle size of MgH 2 16,50,52‐55 . This approach is significantly less expensive, with a high yield for synthesizing materials in the nano range than other approaches like chemical cold rolling and annealing 56,57 .…”

Thermal, Microstructural and Electrochemical Hydriding Performance of a Mg65Ni20Cu5Y10 Metallic Glass Catalyzed by CNT and Processed by High-Pressure Torsion

“…Among different hydrogen absorbing systems, magnesium-based alloys and compounds have been intensively investigated because of their high H-storage capacities (3700 Wh/L or 2600 Wh/kg), high abundance on Earth, low density, non-toxic nature and low cost, resulting in a potential candidate for future industrial applications [5][6][7][8][9]. Unfortunately, the relatively high hydrogenation enthalpy of Mg and its sluggish sorption kinetics are the main difficulties that still impede the widespread practical utilization of the Mg-H system [5,6].…”