Two-Dimensional Hydrogen Boride Sheet for Separate Hydrogen Release
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Solution Overview
Problem
Existing methods for generating hydrogen and oxygen from water simultaneously pose a risk of explosion due to the simultaneous production and release of these gases, necessitating separate recovery at different timings.
Innovation Solution
A hydrogen storage and release material comprising a two-dimensional hydrogen boride-containing sheet with a specific molar ratio of boron to hydrogen, arranged in a mesh-shaped planar structure, allowing for separate generation and release of hydrogen and oxygen at different timings, produced through a method involving magnesium diboride and an ion exchange resin in a polar organic solvent followed by heat-treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water is broken down to generate hydrogen and oxygen simultaneously, then hydrogen production efficiency is improved, but safety deteriorates due to explosion risk from simultaneous generation and release of hydrogen and oxygen
Solution Approach 1:
The patent segments the water decomposition process into two separate stages: first generating and storing hydrogen in the two-dimensional hydrogen boride-containing sheet, then releasing hydrogen separately from oxygen. This temporal and spatial segmentation eliminates the simultaneous presence of hydrogen and oxygen, resolving the safety contradiction while maintaining production efficiency.
2Reliability
If hydrogen and oxygen are recovered separately at different timings, then safety is improved by eliminating explosion risk, but device complexity increases due to need for separate recovery systems
Solution Approach 1:
The patent changes the physical-chemical parameters of hydrogen storage by using a two-dimensional hydrogen boride-containing sheet with specific boron-to-hydrogen molar ratios (1:0.999 to 1:0.001). This material parameter change enables hydrogen to be stored and released at different timings from oxygen generation, achieving safe separation without complex additional recovery systems.
3Reliability
If a two-dimensional hydrogen boride-containing sheet with specific boron to hydrogen molar ratio is used, then hydrogen storage and release at different timings than oxygen is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs a composite material approach by creating a two-dimensional hydrogen boride-containing sheet that integrates boron and hydrogen in specific molar ratios within a unified structural framework. This composite material enables controlled hydrogen storage and release while managing manufacturing precision through material composition rather than mechanical tolerances.
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 material enables safe and reversible storage and release of hydrogen without generating oxygen simultaneously, reducing the risk of explosions and eliminating the need for separate recovery operations.
Implementation Method 1
a two-dimensional network containing n(HxBy) (n≥4, 0.001≤x/y≤0.999) having a molar ratio of boron to hydrogen from 1:0.999 to 1:0.001
Implementation Method 2
hydrogen storage and release material including a two-dimensional hydrogen boride-containing sheet
Implementation Method 3
mixing, in a polar organic solvent, magnesium diboride having an MgB2 type structure and an ion exchange resin to which an ion that is ion-exchangeable with a magnesium ion constituting the magnesium diboride is coordinated
Implementation Method 4
heat-treating the hydrogen storage and release material precursor at from 110° C. to 450° C.
Data Source
AI summary
The present invention provides a hydrogen storage and release material including a two-dimensional hydrogen boride-containing sheet including a two-dimensional network containing n(HxBy) (n≥4, 0.001≤x/y≤0.999) having a molar ratio of boron to hydrogen from 1:0.999 to 1:0.001, the molar ratio being determined by thermal desorption spectroscopy, and mass measurement before and after a temperature rise, wherein the hydrogen storage and release material has: peaks derived from B1s of boron at 187.5±1.0 eV and 191.2±1.0 eV to 193±1.0 eV in X-ray photoelectron spectroscopy, and a peak derived from a B—H stretching vibration at from 2400 cm−1 to 2600 cm−1 and also a peak derived from a B—H—B stretching vibration at from 1200 cm−1 to 1800 cm−1 in infrared spectroscopy.