Enhanced hydrolysis properties and energy efficiency of MgH2-base hydrides

Catalytic effect of EG and MoS 2 on hydrolysis hydrogen generation behavior of high‐energy ball‐milled Mg‐10wt.%Ni alloys in NaCl solution—A powerful strategy for superior hydrogen generation performance

“…And the feasibility and improvement of the hydrolysis hydrogen production by the Mg-based composites will be discussed and investigated from the perspective of regeneration and energy efficiency of the hydrolysis hydrogen generation cycle in our future work. 23,36 4 | CONCLUSIONS 1. High hydrogen generation capacity can be rapidly achieved by HEBM Mg10Ni alloy due to the refinement of particle size and the shorten of diffusion paths.…”

“…34,35 The above-mentioned hydrogen generation way by active alloys is easy to implement, and the equipment/technical demands are low. Complex equipment, strict conditions (temperature and pressure), expensive catalysts, and fresh water are not needed, the seawater resources as well as the Mg resources can meet the requirements, and the byproduct Mg (OH) 2 can be regenerated by chemical reaction to produce Mg. 36 In addition, the utilization of hydrolysis hydrogen generators is expected to avoid the hydrogen storage link effectively, and the cost of the entire hydrogen energy utilization will be greatly reduced. Complex equipment, strict conditions (temperature and pressure), expensive catalysts, and fresh water are not needed, the seawater resources as well as the Mg resources can meet the requirements, and the byproduct Mg (OH) 2 can be regenerated by chemical reaction to produce Mg. 36 In addition, the utilization of hydrolysis hydrogen generators is expected to avoid the hydrogen storage link effectively, and the cost of the entire hydrogen energy utilization will be greatly reduced.…”

“…In contrast, obtaining a large amount of H 2 by the hydrolysis reaction of active metallic is relatively easy, which is an optional method before the widespread promotion of the ideal hydrogen production strategies (electrocatalysis and photocatalysis hydrogen generation). Complex equipment, strict conditions (temperature and pressure), expensive catalysts, and fresh water are not needed, the seawater resources as well as the Mg resources can meet the requirements, and the byproduct Mg (OH) 2 can be regenerated by chemical reaction to produce Mg. 36 In addition, the utilization of hydrolysis hydrogen generators is expected to avoid the hydrogen storage link effectively, and the cost of the entire hydrogen energy utilization will be greatly reduced. Therefore, considering the raw materials, hydrogen production medium, equipment, conditions, efficiency, and the overall hydrogen storage link, hydrogen production by alloy hydrolysis will be more economical, simple, and easy, currently.…”

Fuel Production from Seawater and Fuel Cells Using Seawater

“…[71][72][73][74] The Mg alloy can be fully recycled by electrical system with the efficiency of 41 %. [75,76] Hydrolysis of Mg in an aqueous solutionp roduces Mg(OH) 2 and H 2 as shown in Equation (2), where ap assive Mg(OH) 2 layer is formed on the Mg surfacet oh amper the further hydrolysis of Mg. [77][78][79][80][81][82] However, the Mg(OH) 2 layer is readily broken by the penetration of Cl À ions, which results in pitting corrosion to maintain the continuous hydrolysis of Mg in seawater. [72,83,84] The effects of NH 4 Cl on the rate of magnesium hydride (MgH 2 )h ydrolysis are shown in Figure6,w here the rate of MgH 2 hydrolysis in deionized water is too slow to be used in controlled H 2 generation.…”

A Recycling Hydrogen Supply System of NaBH4 Based on a Facile Regeneration Process: A Review

“…NaBH 4 hydrolysis is another promising system for hydrogen generation. It has relatively high hydrogen capacity (10.8 wt %) [46][47][48] and releases hydrogen with high purity at relatively low operational temperature with a controllable process [24,49,50]. Many studies have been focused on the hydrolysis property improvements [51][52][53][54].…”