Titanium Oxide Electrode Manufacturing for Active Oxygen Production
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Solution Overview
Problem
Current electrodes for producing active oxygen species, such as boron-doped diamond (BDD) and lead oxide, face challenges in mass-manufacturing and environmental concerns, leading to a need for an economically feasible and efficient alternative for applications like electrochemical water treatment, chlorine production, dye-sensitized solar cells, and electric double-layer capacitors.
Innovation Solution
A method for manufacturing a titanium oxide electrode involving anodization, formation of a nano-tube array through electrolysis in a fluorine compound solution, and subsequent annealing and electrical reduction, which enhances active oxygen species production efficiency and electrical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If boron-doped diamond (BDD) electrode is used to produce active oxygen species, then production efficiency and stability are improved, but manufacturing cost increases due to chemical vapor deposition process
Solution Approach 1:
The patent changes the material composition parameters by doping titanium oxide with metal elements (Fe, Co, Ni, Cu, Mn, Zn, or Al) at controlled concentrations (0.1-10 wt%). This parameter modification allows the electrode to achieve active oxygen species production efficiency comparable to BDD electrodes while using a more economically viable manufacturing process without chemical vapor deposition
Solution Approach 2:
The patent replaces the expensive BDD material with a cheaper titanium oxide-based composite that can be manufactured through conventional ceramic processing. Although the service life may be shorter than BDD, the significantly reduced manufacturing cost makes this an economically feasible alternative for mass production applications
2Productivity
If lead oxide (PbO2) electrode is used, then active oxygen species production is achieved, but environmental problems arise due to lead elution
Solution Approach 1:
The patent completely removes the harmful lead element from the electrode composition. Instead of using lead oxide, the invention employs titanium oxide doped with non-toxic metal elements, thereby extracting the harmful component while retaining the desired electrochemical functionality for active oxygen species production
Solution Approach 2:
The patent creates a composite material system combining titanium oxide with small amounts of benign metal dopants (Fe, Co, Ni, Cu, Mn, Zn, or Al). This composite structure provides the necessary catalytic activity for oxygen species generation without the environmental hazards associated with lead-containing materials
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 titanium oxide electrode achieves high efficiency in producing active oxygen species, comparable to BDD electrodes, while being economically viable and environmentally friendly, suitable for applications in water treatment, chlorine production, and energy storage devices.
Implementation Method 1
The titanium oxide base material is annealed
Implementation Method 2
The annealed titanium oxide base material is electrically reduced
Implementation Method 3
electrolysis is performed in an electrolyte solution including a fluorine compound
Data Source
AI summary
The disclosed manufacturing method of titanium oxide electrode comprises: preparing starting materials for titanium oxide, heat-treating the starting materials of titanium oxide, and electro-reducing the heat-treated starting materials of titanium oxide. According to this method, an anode having excellent active oxygen species production efficiency and excellent electrical properties can be manufactured using inexpensive titanium oxide.