Spherical Nanoparticle Hydrides via Wire Vaporization
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Solution Overview
Problem
Current methods for producing nanoparticle hydrides are inefficient, introducing contaminants and requiring high-energy processes, resulting in low production rates and limited scalability, especially for complex alloy hydrides.
Innovation Solution
A method involving wire vaporization in a hydrogen-containing atmosphere to produce spherical nanoparticle hydrides, allowing for high-purity, rapid, and continuous production of complex alloy hydrides with controlled particle size and hydrogen stoichiometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-energy ball milling is used to produce nanoparticle hydrides, then nanoparticle size is achieved, but production rate is limited and contaminants are introduced
Solution Approach 1:
The patent replaces the mechanical ball milling system with a vaporization-condensation system. Wire material is vaporized by electrical discharge and then condensed to form nanoparticles, eliminating the mechanical grinding process that limits production rate and introduces contaminants while achieving the desired nanoparticle size distribution.
Solution Approach 2:
The patent utilizes phase transitions of the wire material - vaporization from solid to gas phase followed by condensation from gas to solid nanoparticle phase. This phase transition approach enables rapid nanoparticle formation with controlled size, overcoming the limitations of mechanical milling processes.
2Manufacturing precision
If complex alloy hydrides are produced by milling from mixed ingot, then desired composition is achieved, but process takes hours to days and introduces contaminants
Solution Approach 1:
The patent replaces the prolonged mechanical milling process with rapid vaporization-condensation. The wire material vaporizes and condenses into nanoparticles in seconds, achieving the desired alloy composition without the hours or days required by milling, and without introducing mechanical contaminants.
Solution Approach 2:
The patent uses pre-fabricated wires with the desired alloy composition as starting material. The wire is prepared in advance with the correct composition, eliminating the need for time-consuming mixing and milling processes to achieve the target composition, and enabling rapid nanoparticle production.
3Manufacturing precision
If batch milling process is used for nanoparticle production, then nanoparticle hydrides are produced, but production rate is limited compared to continuous process
Solution Approach 1:
The patent implements a continuous production process where wire material is continuously fed, vaporized, and condensed into nanoparticles. This continuous operation eliminates the batch-to-batch interruptions inherent in milling processes, significantly increasing production rate while maintaining consistent nanoparticle quality.
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
This method enables the production of high-purity spherical nanoparticle hydrides with improved surface area to volume ratios, increasing production rates and enabling the production of complex alloy hydrides that were previously difficult to achieve.
Implementation Method 1
vaporizing the wire by discharge of electrical current through the wire, to generate a vapor phase of the base material
Implementation Method 2
simultaneously reacting the vapor phase with hydrogen and condensing the vapor phase, thereby generating a plurality of spherical nanoparticle hydrides
Data Source
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AI summary
This invention describes spherical nanoparticle hydrides and a method for making them. A method of producing spherical nanoparticle hydrides comprises obtaining an electrically conductive or semiconductive wire fabricated from a base material capable of forming a hydride; exposing the wire to a hydrogen-containing processing gas under pressure; vaporizing the wire by electrical discharge, to generate a vapor phase; and reacting with hydrogen and condensing the vapor phase, generating a plurality of spherical nanoparticle hydrides. A composition of spherical nanoparticles is also provided, wherein each of the nanoparticles contains a base material that is electrically conductive or semiconductive and capable of forming a hydride, and hydrogen that is chemically or physically bonded with the base material, wherein the nanoparticles are characterized by a number-average particle diameter from 1 nanometer to 1000 nanometers, and wherein the nanoparticles are characterized by an average hydrogen content from 10 atom% to 85 atom%.