Hydrogen Boride Sheet Composition for Light-Driven Hydrogen Release
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Solution Overview
Problem
Current hydrogen supply systems for fuel cells, particularly those using hydrogen boride-containing sheets, face challenges in enhancing hydrogen storage capacity and efficiency while ensuring safety and energy savings.
Innovation Solution
A hydrogen boride-containing composition is developed, comprising a sheet with a two-dimensional network of (BH)n and an electron donor supported on its surface, where electrons are supplied through external stimuli like visible light, enhancing hydrogen generation efficiency and safety by utilizing renewable energy sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydrogen is stored in high-pressure cylinders, then hydrogen supply is reliable, but safety risks increase due to hydrogen being an explosive gas
Solution Approach 1:
The patent uses a hydrogen storage alloy that undergoes phase transition to store hydrogen in a solid state at low pressure, eliminating the explosion risks associated with high-pressure gaseous hydrogen storage while maintaining reliable hydrogen supply capability
Solution Approach 2:
The patent employs a composite structure combining hydrogen storage alloy with a sheet material, creating a composite hydrogen storage system that enhances safety by containing the hydrogen storage function in a stable, low-pressure solid-state configuration
2Quantity of substance
If hydrogen boride-containing sheet is used for hydrogen storage, then hydrogen storage capacity increases to 8.5 wt%, but energy consumption increases during hydrogen release
Solution Approach 1:
The patent incorporates an electron donor substance in advance within the hydrogen boride-containing sheet, which preliminarily provides electrons that reduce the activation energy required for hydrogen release, thereby lowering the energy consumption during hydrogen generation while maintaining high storage capacity
3Quantity of substance
If hydrogen boride-containing sheet is used, then hydrogen storage capacity is improved, but hydrogen generation efficiency needs further enhancement
Solution Approach 1:
The patent introduces an electron donor substance as an intermediary that facilitates the hydrogen release process from the hydrogen boride-containing sheet, mediating the electron transfer to enable more efficient hydrogen generation while preserving the high storage capacity of the boride structure
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 composition significantly improves hydrogen generation performance, achieving energy savings and safe operation at normal temperature and pressure, reducing the need for high-pressure tanks and enhancing the hydrogen storage capacity of hydrogen boride-containing sheets.
Implementation Method 1
electrons of the electron donor are supplied to the hydrogen boride-containing sheet by external stimulus, and hydrogen is generated from the hydrogen boride-containing sheet into which the electrons are injected
Data Source
AI summary
Provided are a hydrogen boride-containing composition, a hydrogen generation system, and a fuel cell system that achieve further performance improvement of a hydrogen supply source with a hydrogen boride-containing sheet. The hydrogen boride-containing composition contains a hydrogen boride-containing sheet having a two-dimensional network consisting of (BH)n(n≥4, where n is an integer) and an electron donor. At least a portion of the electron donor is supported on the hydrogen boride-containing sheet, electrons of the electron donor are supplied to the hydrogen boride-containing sheet by external stimulus, and hydrogen is generated from the hydrogen boride-containing sheet into which the electrons are injected.