Hydrogen Absorption Module With Buffer Layers for Electrode Stability
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Solution Overview
Problem
Existing hydrogen storage and transport technologies suffer from low efficiency and safety issues due to heavy weight and safety problems during storage and transport.
Innovation Solution
A hydrogen absorption/discharge device utilizing BawLixHyOz material with buffer layers of titanium nitride, allowing efficient hydrogen absorption and discharge at 300° C. to 340° C., and a modular design with series/parallel connections for enhanced efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If hydrogen is stored using compressed high-pressure cylinders or liquefied hydrogen tanks, then hydrogen storage capacity is achieved, but weight increases and safety problems occur
Solution Approach 1:
The patent changes the physical and chemical parameters of the storage system by using hydrogen-absorbing alloys that operate at lower pressures and temperatures compared to compressed gas or liquefied hydrogen systems. The alloy material parameters (composition, crystal structure) are optimized to achieve efficient hydrogen absorption and desorption at moderate conditions, reducing the need for heavy pressure vessels and insulation systems.
Solution Approach 2:
The invention employs composite material structures combining hydrogen-absorbing alloys with supportive matrices and surface treatment layers. This composite approach enhances the hydrogen storage capacity per unit weight while maintaining structural integrity and safety, directly addressing the weight vs. storage capacity contradiction.
2Weight of moving object
If hydrogen-absorbing alloys are used for storage, then weight is reduced, but storage and transport efficiency remains poor
Solution Approach 1:
The patent introduces dynamic control mechanisms for hydrogen absorption and desorption processes. By applying external stimuli (temperature cycles, pressure variations, electrical fields) to the hydrogen-absorbing alloy, the system dynamically adjusts hydrogen uptake and release rates, significantly improving storage and transport efficiency while maintaining lightweight construction.
Solution Approach 2:
The invention uses intermediary substances or surface treatments on the hydrogen-absorbing alloy particles that facilitate faster hydrogen diffusion and improve reaction kinetics. These intermediaries act as catalysts or transport enhancers, boosting storage efficiency without adding significant weight.
3Ease of operation
If electrodes are used in the hydrogen absorption/discharge device, then hydrogen absorption and discharge functionality is achieved, but electrode reduction occurs
Solution Approach 1:
The patent introduces buffer layers as intermediary substances between the electrodes and the hydrogen-absorbing alloy. These buffer layers prevent direct contact and chemical reactions between the electrodes and the alloy, thereby preventing electrode reduction while still allowing efficient charge transfer for hydrogen absorption and discharge operations.
Solution Approach 2:
The buffer layers are designed as sacrificial protective layers that can be easily replaced if degraded, protecting the expensive electrodes from reduction. This approach maintains long-term electrode stability and reliability at reasonable cost.
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 device achieves efficient hydrogen storage and transport by maintaining conductivity and reducing electrode reduction, with improved responsiveness and energy conservation.
Implementation Method 1
the absorption/discharge part includes a material that allows permeation of hydrogen
Implementation Method 2
the absorption/discharge part includes a material that allows permeation of hydrogen and hydride-ion conduction
Implementation Method 3
the buffer layers are configured to reduce permeation of hydrogen to the electrodes
Data Source
AI summary
A hydrogen absorption/discharge device includes an absorption/discharge part, a first electrode located at a first end portion side of the absorption/discharge part, a second electrode located at a second end portion side of the absorption/discharge part, and buffer layers located respectively between the first electrode and the first end portion of the absorption/discharge part and between the second electrode and the second end portion of the absorption/discharge part; the absorption/discharge part includes a material that allows permeation of hydrogen and hydride-ion conduction; and the second end portion faces the first end portion.