Cavitation Processing of Cathode Precursors for Low-Waste Synthesis
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Solution Overview
Problem
Current industrial methods for producing cathode active materials for energy storage devices, such as lithium mixed metal oxides, are costly and environmentally inefficient, with significant waste generation and high raw material expenses.
Innovation Solution
A method utilizing cavitation to produce mixed metal hydroxide materials as cathode precursors, which reduces the need for processing steps and ingredients, minimizes waste, and enhances product quality by controlling particle size and impurity formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional industrial methods are used to produce cathode active materials, then production capacity is maintained, but production cost increases and environmental efficiency deteriorates due to significant waste generation
Solution Approach 1:
The patent applies cavitation technology to change the physical and chemical parameters of the reaction process, transforming the conventional oxidation method into a cavitation-assisted oxidation process. This parameter change enables more efficient material utilization and reduces waste generation while maintaining production capacity
Solution Approach 2:
The patent replaces conventional mechanical mixing and chemical oxidation methods with cavitation technology, which uses acoustic field energy to drive the oxidation reaction. This substitution eliminates the need for harsh chemical reagents and reduces harmful waste byproducts
2Ease of manufacture
If conventional oxidation methods are used, then processing steps are complete, but the number of processing steps and ingredients increases
Solution Approach 1:
The patent merges the oxidation step with the cavitation treatment, combining what were previously separate process steps into a single integrated operation. The cavitation process simultaneously provides mixing, heating, and oxidation functions, reducing the total number of processing steps and ingredients required
3Quantity of substance
If conventional methods are used, then production volume is maintained, but product quality deteriorates with higher impurity formation
Solution Approach 1:
The cavitation process changes the reaction parameters including temperature distribution, pressure fluctuations, and mass transfer rates, which collectively improve the oxidation efficiency and reduce impurity formation while maintaining high production volume
Solution Approach 2:
The cavitation process employs periodic acoustic pulses that create cyclic compression and expansion in the reaction medium, enhancing mass transfer and reaction uniformity. This periodic action ensures consistent product quality with reduced impurities while sustaining high production rates
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 cavitation process produces high-quality mixed metal hydroxide materials with controlled particle size and reduced impurities, leading to improved cathode performance and lower production costs, contributing to more sustainable energy storage solutions.
Implementation Method 1
applying cavitation to the reaction slurry
Implementation Method 2
the cavitation is applied by a device selected from the group consisting of an ultrasonic device, a hydrodynamic cavitation device
Implementation Method 3
reacting the first metal, the second metal and the oxidant to form a product slurry comprising a mixed metal hydroxide material
Data Source
AI summary
A process for the production of a mixed metal hydroxide material for use as a cathode active material precursor is described, wherein the process utilizes cavitation to produce high quality materials through elimination of some processing steps and ingredients. In particular, a method of producing a mixed metal hydroxide material combining a first metal, a second metal, an oxidant and a liquid to form a reaction slurry is disclosed. The method may include applying cavitation to the liquid prior to the formation of the reaction slurry and/or applying cavitation to the liquid when the liquid is part of the reaction slurry. A method of forming an active material and a mixed metal hydroxide material for use as an active material precursor is also disclosed.