Bimetallic Nanoframe Catalysts for Cost-Effective Hydrogen Evolution
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Solution Overview
Problem
Current catalysts for renewable energy technologies, such as electrochemical water-splitting and carbon dioxide reduction, rely heavily on expensive noble metals, and abundant metal alternatives like Cu—Ni nanoparticles or transition metal dichalcogenides exhibit low efficiency, making them unsuitable replacements.
Innovation Solution
Development of catalyst compositions comprising a metal component with a bimetallic or trimetallic structure, including Group 10-11 and Group 8-11 metals, combined with an electrolyte and amphiphile material, which form defective nanoframes that enhance catalytic activity by promoting hydrogen coverage on defect sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noble metal catalysts are used, then catalytic activity is high, but cost is high
Solution Approach 1:
The patent changes the composition parameters by using bimetallic or trimetallic alloys with specific formulas (M1)a(M2)b where M1 is Group 10-11 metal and M2 is Group 8-11 metal, optimizing the ratio of expensive to abundant metals to maintain catalytic activity while reducing cost
Solution Approach 2:
The patent creates composite catalyst compositions combining multiple metal components (bimetallic or trimetallic alloys) with electrolyte materials and amphiphile materials, forming complex composite structures that enhance catalytic performance while using less expensive noble metals
2Quantity of substance
If abundant metals like Cu-Ni or TMDs are used, then cost is reduced, but catalytic efficiency is low
Solution Approach 1:
The patent forms composite materials combining abundant metals (Cu, Ni) with noble metals in specific alloy ratios, creating bimetallic or trimetallic structures that leverage the low cost of abundant metals while maintaining the high catalytic activity of noble metals through synergistic effects
Solution Approach 2:
The patent creates defective nanoframe structures where different regions have different properties - the alloy composition and defect sites provide localized active centers with enhanced catalytic activity, while the overall structure uses cost-effective abundant metals
3Reliability
If defective nanoframe structures are formed, then catalytic sites increase, but manufacturing complexity increases
Solution Approach 1:
The patent uses amphiphile materials as templates during the synthesis process to pre-form the defective nanoframe structures. The amphiphiles self-assemble into micellar structures that guide the formation of metal nanoparticles with controlled defects and high surface area, simplifying the manufacturing process
Solution Approach 2:
The patent employs amphiphile materials as intermediary substances that mediate the formation of defective nanoframe structures. These amphiphiles act as surfactants and structure-directing agents, enabling the spontaneous formation of complex high-surface-area architectures without requiring complex top-down fabrication methods
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 catalyst compositions demonstrate improved electrocatalytic activity in reactions like hydrogen evolution and carbon dioxide reduction, offering a cost-effective alternative to noble metal-based catalysts with increased efficiency and catalytic sites.
Implementation Method 1
applying a voltage to the catalyst composition to form the conversion product
Data Source
AI summary
Aspects of the present disclosure generally relate to catalyst compositions, processes for producing such catalyst compositions, and uses of such catalyst compositions. In an embodiment, a composition is provided. The composition includes an electrolyte material or an ion thereof, an amphiphile material or an ion thereof, and a metal component, the metal component comprising an alloy having the formula (M1)a(M2)b, wherein M1 is a Group 10-11 metal of the periodic table of the elements, M2 is a first Group 8-11 metal of the periodic table of the elements, M1 and M2 are different, and a and b are positive numbers. In another embodiment, a device is provided that includes an electrolyte material or ion thereof, an amphiphile material or ion thereof, and a metal component disposed on an electrode, the metal component comprising a bimetallic nanoframe, a trimetallic nanoframe, or a combination thereof.