Magnesium Composite Hydrogen Storage Material With Catalytic Additives
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Solution Overview
Problem
Current hydrogen carriers lack improved hydrogenation and dehydrogenation properties, such as high reversible capacity, rate, and working temperature, which are essential for efficient hydrogen storage and release.
Innovation Solution
A magnesium-based composite material is developed, comprising a magnesium-based solid solution and an amorphous additive. The solid solution includes magnesium, catalytic metals like aluminum and zinc, and carbon allotropes, while the amorphous additive contains catalytic metals and carbon allotropes. This composite is formed through a process involving casting, severe plastic deformation, and high-energy ball milling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydrogen carriers are used, then simplicity is maintained, but hydrogenation and dehydrogenation properties (reversible capacity, rate, working temperature) remain insufficient
Solution Approach 1:
The patent employs composite materials by combining magnesium-based solid solution with amorphous additive containing catalytic metals and carbon allotropes. This composite structure enhances hydrogenation and dehydrogenation properties through synergistic effects: the magnesium base provides high hydrogen capacity while the amorphous additive with catalytic metals (Ni, Pd, Pt) and carbon structures accelerates reaction kinetics and improves reversibility, resolving the contradiction between performance improvement and material complexity.
Solution Approach 2:
The patent applies parameter changes by modifying the material's microstructure through severe plastic deformation and high-energy ball milling processes. These processes alter grain size, phase distribution, and surface area parameters of the magnesium-based composite, transforming it from a conventional material with poor kinetics to one with enhanced hydrogenation/dehydrogenation rates and reversible capacity, while operating at improved working temperatures.
2Reliability
If magnesium-based composite material with amorphous additive is used, then reversible hydrogen storage capacity and rates are improved, but manufacturing process complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-forming the magnesium-based solid solution with embedded catalytic metals and carbon allotropes through controlled casting and severe plastic deformation before final composite formation. This preliminary structuring ensures uniform distribution of catalytic phases and amorphous additive, facilitating subsequent high-energy ball milling and reducing manufacturing complexity despite the multi-step process required to achieve the enhanced reversible hydrogen storage capacity of 6-7 wt%.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The magnesium-based composite material exhibits enhanced hydrogenation and dehydrogenation properties, including a maximum reversible hydrogen storage capacity of 6 wt % to 7 wt %, hydrogen absorption rates of 2 wt % per minute to 4 wt % per minute, and hydrogen desorption rates of 0.25 wt % per minute to 1.25 wt % per minute, at working temperatures from 300° C. to 400° C.
Implementation Method 1
The magnesium-based composite material exhibits enhanced hydrogenation and dehydrogenation properties, including a maximum reversible hydrogen storage capacity of 6 wt % to 7 wt %
Implementation Method 2
The magnesium-based composite material exhibits enhanced hydrogenation and dehydrogenation properties, including a maximum reversible hydrogen storage capacity of 6 wt % to 7 wt %
Implementation Method 3
The magnesium-based solid solution includes magnesium, at least one first catalytic metal selected from the group consisting of aluminum, zinc, zirconium, nickel, titanium, vanadium, chromium, cobalt, iron, copper, molybdenum, niobium, palladium, and yttrium
Data Source
AI summary
The present disclosure provides a magnesium-based composite material and a method of forming the same. The method includes performing a casting process on magnesium, at least one first catalytic metal, and at least one first carbon allotrope to form a first magnesium-based solid solution; performing a severe plastic deformation on the first magnesium-based solid solution to form a second magnesium-based solid solution; and performing a high energy ball milling process on the second magnesium-based solid solution and an amorphous additive to form the magnesium-based composite material. The magnesium-based composite material includes a magnesium-based solid solution and the amorphous additive mixed with the magnesium-based solid solution. The magnesium-based solid solution includes magnesium, at least one first catalytic metal and at least one first carbon allotrope. The amorphous additive includes at least one second catalytic metal and at least one second carbon allotrope.