Nickel-Doped Ozone Electrode for Neutral Water Electrolysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for ozone generation in water face challenges in dissolving ozone in a gas phase and adjusting concentration, particularly in neutral aqueous solutions like city water, and there is a need for an electrode that can stably produce ozone with high efficiency and durability.
Innovation Solution
A catalyst layer composed of 79.0 mol % to 90.0 mol % tin oxide, 7.0 mol % to 17.0 mol % antimony oxide, and 0.1 mol % to 6.0 mol % nickel oxide is formed on a titanium or titanium alloy substrate, with a specific production method involving solution mixing, application, and heat treatment to create an electrode with high ozone generation efficiency and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a platinum wire electrode is used in acidic aqueous solution for ozone generation, then ozone can be generated by electrolysis, but the method requires sulfuric acid electrolyte which is difficult to handle and not suitable for neutral water like city water
Solution Approach 1:
The invention changes the chemical composition parameters of the catalyst layer by incorporating nickel oxide (0.1-6.0 mol%) alongside tin oxide and antimony oxide, which modifies the electrode's catalytic properties to enable effective ozone generation in neutral pH conditions without requiring acidic electrolytes
Solution Approach 2:
The invention uses a composite catalyst layer material consisting of tin oxide, antimony oxide, and nickel oxide in specific ratios, combining the properties of these materials to achieve both high ozone generation efficiency and compatibility with neutral aqueous solutions like city water
2Productivity
If silent discharge method is used to generate ozone, then ozone can be produced in gas phase, but the ozone is difficult to dissolve in water and concentration adjustment is difficult
Solution Approach 1:
The invention replaces the mechanical silent discharge method with an electrochemical electrolysis process using the specialized electrode, which directly generates ozone in aqueous solution through electron transfer reactions at the electrode surface, eliminating the need for gas dissolution and enabling precise concentration control through electrolysis parameters
3Productivity
If an electrode is designed for high ozone generation efficiency, then ozone production is enhanced, but the durability and stability in neutral aqueous solution may be compromised
Solution Approach 1:
The invention employs a composite catalyst layer of tin oxide, antimony oxide, and nickel oxide where each material contributes specific properties: tin oxide provides catalytic activity, antimony oxide enhances stability, and nickel oxide improves durability in neutral conditions, achieving both high efficiency and long service life
Solution Approach 2:
The invention applies the catalyst layer with specific compositional ratios (79-90 mol% tin oxide, 7-17 mol% antimony oxide, 0.1-6.0 mol% nickel oxide) to optimize local catalytic properties at the electrode surface, ensuring high ozone generation efficiency while maintaining overall structural durability
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 electrode achieves excellent ozone generation efficiency and durability in neutral aqueous solutions, with an electric double layer capacitance ranging from 2 (mC/cm2) to 40 (mC/cm2), enhancing catalyst utilization and stability.
Implementation Method 1
generating ozone through a reaction at an anode by the electrolysis of water
Implementation Method 2
The above-mentioned electrode for ozone generation has a value of an electric double layer capacitance of from 2 (mC/cm2) to 40 (mC/cm2)
Data Source
AI summary
An electrode for ozone generation has excellent ozone generation efficiency even in a neutral aqueous solution such as city water and has excellent durability. An electrode for electrolysis is specifically designed for ozone generation. The electrode for ozone generation includes an electrode substrate formed of titanium or a titanium alloy, and a catalyst layer formed on the electrode substrate, the catalyst layer consisting of 79.0 mol % or more and 90.0 mol % or less of tin oxide, 7.0 mol % or more and 17.0 mol % or less of antimony oxide, and 0.1 mol % or more than 0.1 mol % and 6.0 mol % or less of nickel oxide on a metal basis.