Graphyne Barrier Layers for Hydrogen Tank Embrittlement Resistance
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Solution Overview
Problem
Hydrogen-induced embrittlement in metal-based hydrogen storage tanks poses safety and durability challenges, necessitating a barrier to prevent hydrogen adsorption and leakage.
Innovation Solution
Incorporating graphyne-based protective layers in hydrogen storage tanks to minimize hydrogen adsorption and prevent leakage, utilizing graphyne's impenetrable nature to hydrogen molecules under projected conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metallic materials such as stainless steel are used for tank body, then cost is reduced and structural strength is improved, but hydrogen-induced embrittlement occurs due to hydrogen dissociation and adsorption
Solution Approach 1:
A graphyne-based protective layer is introduced as an intermediary barrier between hydrogen gas and the metallic tank body. This layer prevents hydrogen from reaching the metal surface, thereby eliminating hydrogen-induced embrittlement while allowing the use of cost-effective metallic materials like stainless steel for the tank structure.
Solution Approach 2:
The patent employs a composite structure combining a metallic bulk region with a graphyne-based protective layer. This composite material system leverages the mechanical strength of metals and the hydrogen barrier properties of graphyne, resolving the contradiction between structural strength and hydrogen resistance.
2Reliability
If conventional protective layers are applied to prevent hydrogen adsorption, then hydrogen barrier performance is improved, but manufacturing complexity and material cost increase
Solution Approach 1:
The patent extracts and applies a specific functional property (hydrogen barrier capability) from graphyne material to create a targeted protective layer. This approach provides effective hydrogen protection without requiring complex multi-layer structures, thereby reducing manufacturing complexity while maintaining high barrier performance.
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
Enhances the safety and durability of hydrogen storage tanks by reducing hydrogen adsorption and preventing embrittlement, meeting industry standards for lightweight, cost-effective, and robust hydrogen storage solutions.
Implementation Method 1
One or more of these protective layers comprise a number of graphyne molecules such that the one or more protective layers are configured to lower hydrogen adsorption into the bulk region
Data Source
AI summary
A hydrogen gas storage tank includes a body including a metallic bulk region and one or more protective layers adjacent to the bulk region. One or more of these protective layers comprise a number of graphyne molecules such that the one or more protective layers are configured to lower hydrogen adsorption into the bulk region when compared to a bulk region with protective layers free from graphyne.