Titanium Oxide Electrode Extraction for High-Purity Lithium Hydroxide
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Solution Overview
Problem
Existing techniques for manufacturing lithium hydroxide are insufficient in accurately extracting lithium ions, leaving room for improvement.
Innovation Solution
An extraction apparatus and method utilizing a capture release electrode made of titanium oxide, which selectively captures and releases lithium ions in separate aqueous media, enabling high-accuracy extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing extraction techniques are used, then the extraction process can be completed, but the extraction accuracy is insufficient
Solution Approach 1:
The extraction process is divided into distinct stages: capture stage in the first aqueous medium and release stage in the second aqueous medium. The capture release electrode is sequentially immersed in different media to perform different functions, enabling high accuracy extraction while maintaining productivity through staged processing
Solution Approach 2:
The patent changes the chemical environment parameters by using different aqueous media with different compositions for capture and release stages. The first aqueous medium contains lithium ions and other metal ions for selective capture, while the second aqueous medium facilitates release, thereby improving extraction accuracy without sacrificing efficiency
2Quantity of substance
If lithium ions are extracted from aqueous media containing multiple metal ions, then lithium can be recovered, but other metal ions may be co-extracted reducing purity
Solution Approach 1:
The capture release electrode exhibits different local properties in different stages: in the first aqueous medium it functions as a capture electrode with high affinity for lithium ions, while in the second aqueous medium it functions as a release electrode. This local functional differentiation enables selective lithium ion recovery while maintaining high purity through controlled release
Solution Approach 2:
The capture release electrode acts as an intermediary between the first and second aqueous media. It selectively interacts with lithium ions in the first medium and then releases them to the second medium, serving as a mediator that enables pure lithium ion transfer while excluding other metal ions from the final product
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 solution allows for highly accurate extraction of lithium ions, leading to the production of lithium hydroxide with high purity.
Implementation Method 1
A capture release electrode made of titanium oxide, which selectively captures and releases lithium ions in separate aqueous media
Implementation Method 2
The first electric power source is configured to energize the first electrode and the second electrode
Data Source
AI summary
An extraction apparatus is provided and includes a first aqueous medium, a second aqueous medium, a first electrode, a second electrode, and a first electric power source. The first aqueous medium includes two or more kinds of metal ions. The second aqueous medium is separated from the first aqueous medium. The first electrode is immersible in the first aqueous medium in a state of not being immersed in the second aqueous medium, and is immersible in the second aqueous medium in a state of not being immersed in the first aqueous medium. The second electrode is immersible in the first aqueous medium. The first electric power source is coupled to the first electrode and the second electrode. The two or more kinds of metal ions include a lithium ion. The first electrode includes a titanium oxide. The first electric power source is configured to energize the first electrode and the second electrode in a state where the first electrode and the second electrode are immersed in the first aqueous medium. The first electrode that has been energized in a state of being immersed in the first aqueous medium is immersible in the second aqueous medium.