Hydrogen Occlusive Alloy Composition for Release
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Solution Overview
Problem
Magnesium-based hydrogen occlusive alloys have a disadvantage in releasing very little hydrogen despite occluding a large amount, making them ineffective as hydrogen storage materials.
Innovation Solution
A hydrogen occlusive alloy with a cubic structure and composition represented by (Mg1-XLX)(Ni1-Y-ZMYLiZ), where L and M are specific elements, and mole ratios X, Y, and Z are within certain ranges, enhancing hydrogen release properties while maintaining occlusion capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If alloying elements are added to improve hydrogen release, then hydrogen release properties are improved, but manufacturing complexity increases
Solution Approach 1:
The patent establishes specific concentration ranges for each alloying element (0.1-5.0 wt%) to optimize hydrogen release while maintaining manageable manufacturing complexity through defined compositional parameters
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 alloy achieves a remarkable improvement in hydrogen release properties and cycle efficiency, preventing crystalline structure collapse during occlusion and release, allowing for a large hydrogen release amount.
Implementation Method 1
Hydrogen occlusive alloys are alloys which store hydrogen as an energy source safely and easily
Implementation Method 2
metal elements which exothermically react with hydrogen, that is, which form a stable compound with hydrogen
Data Source
AI summary
A hydrogen occlusive alloy has a cubic structure and a composition represented by the following general formula (1):(Mg1-XLX)(Ni1-Y-ZMYLiZ)m (1)where the element L is at least one element selected from the group consisting of Na, Cs, Ca, Sr, Ba, Sc, Ti, Zr, Hf, V, Nb, Ta, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, the element M is at least one element selected from the group consisting of Cr, Mo, W, Mn, Fe, Co, Pd, Pt, Cu, Ag, Zn, Cd, B, Al, Ga, In, Si, Ge, Sn, Pb, Sb and Bi, and mole ratios X, Y, Z and m are 0<X≦0.5, 0<Y≦0.5, 0.1≦Z≦0.9, and 1.8≦m≦2.2, respectively.