Thin-Film Catalyst Ionized Vapor Deposition for Fast Production
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Solution Overview
Problem
Existing methods for producing medium-entropy alloy (MEA)/high-entropy alloy (HEA) and multi-metallic element ceramic thin-film catalysts are inefficient, costly, and environmentally harmful, limiting their scalability and stability in high-temperature and corrosive environments.
Innovation Solution
A device and method utilizing a vacuum chamber with evaporators, gas guide pipes, and an ion generator to simultaneously evaporate and ionize film materials, forming catalytic film layers through vapor deposition, combined with a winding mechanism for substrate rotation and controlled ion source currents to enhance film formation efficiency and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If chemical vapor deposition (CVD) and atomic layer deposition (ALD) are used to produce HEA thin-film catalysts, then the catalyst structure can be controlled, but the production efficiency is extremely low and the cost is high
Solution Approach 1:
The patent changes the fundamental parameters of the deposition process by using ion beam sputtering instead of conventional CVD/ALD, operating at lower temperatures (room temperature to 500°C) and achieving much faster deposition rates while maintaining precise control over catalyst composition and structure
Solution Approach 2:
The patent replaces the chemical vapor deposition mechanism with a physical sputtering mechanism driven by ion bombardment, where ions physically eject atoms from target materials to deposit films, achieving both precision and high efficiency simultaneously
2Ease of manufacture
If hydrothermal method, sol-gel method, or electrochemical method are used to produce HEA thin-film catalysts, then the catalyst can be formed, but the pollution is high, cost is high, and catalyst adhesion is low
Solution Approach 1:
The patent employs a vacuum environment during the sputtering process, eliminating the need for water-based hydrothermal methods and their associated pollution, waste water treatment, and high energy consumption, while also improving catalyst adhesion through direct physical deposition
Solution Approach 2:
The patent replaces wet chemical methods (hydrothermal, sol-gel, electrochemical) with physical ion beam sputtering, eliminating chemical byproducts, reducing pollution, lowering costs by avoiding complex chemical reagents, and improving catalyst adhesion through direct atomic-level deposition
3Productivity
If carbothermal shock (CTS) method is used to prepare thin-film catalysts, then the catalyst can be produced, but liquid precursor is required, only conductive carrier can be adopted, and morphology control of high-entropy nanoalloy is lower
Solution Approach 1:
The patent changes the deposition temperature parameter to operate at lower temperatures (room temperature to 500°C) compared to carbothermal shock methods, eliminating the requirement for liquid precursors and enabling use with various carrier types including insulators, while maintaining high productivity
Solution Approach 2:
The patent replaces the carbothermal shock method with ion beam sputtering, a physical vapor deposition technique that does not require liquid precursors or conductive carriers, allowing deposition on diverse substrate materials and achieving superior morphology control of high-entropy nanoalloys
4Productivity
If conventional impregnation, co-precipitation, or ion exchange methods are used for large-scale catalyst production, then the catalyst can be produced, but the pollution is high, impurity content control is difficult, and stability and repeatability are not fully controlled
Solution Approach 1:
The patent replaces conventional wet chemical methods (impregnation, co-precipitation, ion exchange) with physical ion beam sputtering, eliminating chemical reactions that generate impurities and byproducts, achieving precise control over catalyst composition and purity while maintaining large-scale production capability
Solution Approach 2:
The patent performs deposition in a vacuum environment, preventing contamination from atmospheric moisture and oxygen, ensuring consistent purity and composition control across large-scale production, while also improving the stability and repeatability of the catalyst
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 method enables rapid, large-scale production of stable thin-film catalysts with high-temperature resistance and reduced environmental impact, achieving film formation times under 5 minutes and enabling industrial applications.
Implementation Method 1
the evaporated film material reacts with the reactive gas to form a catalytic film layer on a surface of a substrate through vapor deposition
Implementation Method 2
an ion generator arranged in the vacuum chamber and configured to ionize the reactive gas and an evaporated film material
Data Source
AI summary
A device and method for producing a thin-film catalyst are provided. The device includes a vacuum chamber, a plurality of evaporators, a plurality of gas guide pipes, an ion generator, and a control unit. The plurality of evaporators are configured to evaporate at least one film material. The plurality of gas guide pipes are configured to introduce a reactive gas. The ion generator is configured to ionize the reactive gas and the evaporated film material. The control unit is configured to control the vacuum chamber to be vacuumed, control at least two evaporators of the plurality of evaporators to be simultaneously started, control the plurality of gas guide pipes to introduce the reactive gas, and control an ion source current of the ion generator to be adjusted, such that the evaporated film material reacts with the reactive gas to form a catalytic film layer on a surface of a substrate.