Silicon-Coated Magnesium Nanoparticles for Oxidation-Resistant Handling
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Solution Overview
Problem
Nano-size metal magnesium particles face challenges in handling and oxidation resistance, limiting their application in secondary batteries and biomedical implants due to reactivity with water and air, and existing coatings do not effectively control their surface properties for improved performance.
Innovation Solution
Silicon compound-coated metal magnesium particles with a controlled average particle diameter of 5 nm to 500 nm and a silicon compound coating thickness of 1 nm to 50 nm, ensuring excellent oxidation resistance and controlled surface properties, are developed to enhance their handling and performance in secondary batteries and biomedical applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nano-size metal magnesium particles are used to improve battery performance and reduce implant burden, then reactivity with water and air increases, but oxidation resistance deteriorates
Solution Approach 1:
The patent applies composite materials by coating metal magnesium particles with silicon compound to create a composite structure. The silicon compound coating layer (1-50 nm thick) forms a protective barrier that prevents direct contact between magnesium and oxidizing agents in air or water, while allowing the underlying magnesium to maintain its high reactivity for battery performance and dissolution functionality. This composite structure resolves the contradiction by combining the high reactivity of magnesium with the oxidation resistance of silicon compound.
2Reliability
If carbon allotrope coating is applied to metal magnesium surface, then electrical conductivity is improved, but magnesium ion reduction efficiency decreases
Solution Approach 1:
The patent uses silicon compound as an intermediary coating material instead of carbon allotrope. The silicon compound coating serves as a mediator that provides oxidation resistance and handling stability without interfering with the electrochemical reactions. Unlike carbon coating which blocks magnesium ion reduction, the silicon compound coating allows magnesium ions to be reduced efficiently while still providing the necessary protective function, thus resolving the contradiction between conductivity and reduction efficiency.
3Reliability
If thick silicon compound coating is applied to improve oxidation resistance, then handling stability is improved, but magnesium ion transfer is hindered
Solution Approach 1:
The patent applies parameter changes by precisely controlling the thickness of the silicon compound coating within the range of 1-50 nm. This specific thickness range provides sufficient oxidation resistance and handling stability while maintaining adequate ion transfer efficiency. The coating is thin enough to allow magnesium ion diffusion but thick enough to provide protective functionality, thus resolving the contradiction between stability and transfer efficiency through optimized dimensional parameters.
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 silicon compound coating provides stable, air-resistant nano-size metal magnesium particles that improve the efficiency of secondary battery electrodes and accelerate the dissolution of implant materials in the body, reducing patient burden and enhancing energy storage and implant performance.
Implementation Method 1
the silicon compound coating provides stable, air-resistant nano-size metal magnesium particles that improve the efficiency of secondary battery electrodes and accelerate the dissolution of implant materials in the body
Data Source
AI summary
The present invention relates to silicon compound coated metal magnesium particles in which at least a part of a surface of the metal magnesium particles is coated with the silicon compound, wherein an average particle diameter of the silicon compound coated metal magnesium particles is 5 nm or more and 500 nm or less, and a thickness of the silicon compound coating is 1 nm or more and 50 nm or less. The silicon compound coated metal magnesium particles of the present invention are easy to handle in the atmosphere, and have excellent oxidation resistance, and further the properties expected of the nano-size metal magnesium particles are improved at a maximum, or the properties are controlled by supplementing the properties.