Doped Diamond Electrode Grain Size Control
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Solution Overview
Problem
Existing diamond particle electrodes have inefficiencies due to varying grain sizes of diamond particles, leading to suboptimal protrusion and stability, which affects their performance in applications like water treatment and synthesis chemistry.
Innovation Solution
The electrode is optimized by limiting the grain size variation of diamond particles to ensure a high proportion of protruding particles, with at most 10% outside a specific range (170 μm to 420 μm), and adjusting the average grain size to match the carrier layer thickness for improved stability and efficacy, with a preferred ratio of 1:3 to 1:8 and minimal uncovered surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If diamond particles with varying grain sizes are used, then the electrode can be produced more easily, but the proportion of protruding diamond particles decreases, reducing electrode efficacy
Solution Approach 1:
The patent applies parameter changes by strictly controlling the grain size parameter of diamond particles within a specific range (170-420 μm) and limiting variations to at most 50 μm difference. This parameter control ensures that a high proportion of diamond particles protrude from the carrier layer, thereby maintaining high electrode efficacy while allowing for practical production
2Stability of the object's composition
If the carrier layer thickness is increased to improve stability, then the electrode structure becomes more stable, but the proportion of protruding diamond particles decreases
Solution Approach 1:
The patent resolves this contradiction by optimizing the parameter relationship between carrier layer thickness and diamond particle grain size. By selecting diamond particles with grain sizes of 170-420 μm and controlling their variation to at most 50 μm, the invention ensures that particles effectively protrude from the carrier layer even when the carrier layer has sufficient thickness for stability, thus maintaining high electrode efficacy
3Adaptability or versatility
If diamond particles with large grain size variation are used, then material selection becomes easier, but the uniformity of protruding parts decreases, affecting electrode performance
Solution Approach 1:
The patent applies parameter changes by defining a specific grain size range (170-420 μm) with a maximum variation of 50 μm. This controlled parameter range strikes an optimal balance: it is narrow enough to ensure uniform protrusion and high manufacturing precision, yet wide enough to allow practical material selection and production flexibility
Solution Approach 2:
The patent applies homogeneity by ensuring that diamond particles have very similar grain sizes (varying by at most 50 μm within the 170-420 μm range). This homogeneity in particle size ensures uniform protrusion from the carrier layer, creating consistent electrode performance across the electrode surface
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 configuration results in a high efficacy electrode with a significant proportion of protruding diamond particles, enhancing mechanical strength and performance in electrochemical processes, particularly in water treatment and synthesis chemistry.
Implementation Method 1
industrial diamonds produced in a high-pressure/high-temperature process, preferably doped with boron
Implementation Method 2
Diamond particle electrodes are characterised by a high overvoltage for oxygen and hydrogen and are therefore particularly well suited for multiple oxidation processes in aqueous solution
Data Source
AI summary
An electrode formed of synthetically produced, electrically conductive, doped diamond particles embedded in a carrier layer formed of electrically non-conductive material, wherein the diamond particles protrude on both sides of the carrier layer and come from a grain size range of 170 μm to 420 μm, wherein the diamond particles in the electrode have grain sizes which differ from one another by at most 50 μm. At most 10% of the diamond particles have a grain size outside the particular grain size range.