Power Jet Droplet Processing for Consistent Battery Active Materials
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Solution Overview
Problem
Conventional processes for manufacturing cathode active materials for lithium-ion batteries are costly, time-consuming, and result in inconsistent quality and low yields, due to challenges in producing uniform nano- and micron-structured materials.
Innovation Solution
A system with power jet modules coupled to a dispersion chamber is used to produce material particles with desirable crystal structures, sizes, and morphologies by jetting a liquid mixture into streams of droplets, which are then dispersed and reacted in a reaction chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional solid-state processes (grinding and pyrolysis at extreme high temperature) are used to produce graphite anode materials, then the materials achieve desired crystal structure, but the manufacturing process consumes excessive energy and time
Solution Approach 1:
The invention changes the processing parameters from extreme high temperature (3000°C) solid-state pyrolysis to controlled lower temperature chemical vapor deposition, achieving crystal structure formation through different physical-chemical pathways that consume less energy
Solution Approach 2:
The invention replaces the mechanical grinding and thermal pyrolysis process with a chemical vapor deposition process, substituting mechanical-energy-intensive methods with a chemically-driven process that is more energy-efficient
2Productivity
If conventional manufacturing processes are used for cathode active materials, then production capacity is achieved, but manufacturing cost is considerably higher and quality consistency is poor
Solution Approach 1:
The invention extracts and eliminates the problematic intermediate steps (grinding, mixing, pyrolysis) from the conventional multi-step process, using a single-step chemical vapor deposition process that directly produces high-quality cathode materials with consistent properties
Solution Approach 2:
The invention implements a continuous chemical vapor deposition process that maintains steady-state reaction conditions, ensuring consistent material quality and properties throughout production, unlike batch processes that suffer from variability
3Quantity of substance
If conventional batch processing methods are used, then material production is achieved, but manufacturing time is excessive and energy consumption is high
Solution Approach 1:
The invention transitions from batch processing to continuous chemical vapor deposition, where reactants continuously flow through the reaction zone and products are continuously formed and collected, dramatically reducing manufacturing time while maintaining high material production
Solution Approach 2:
The invention performs preliminary preparation of reactant gases and control of deposition conditions before the main reaction, enabling the process to proceed efficiently and rapidly once initiated, reducing overall manufacturing time
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 method enables the efficient production of high-quality, structured active materials for battery cells, reducing manufacturing time and energy consumption, and improving yield and consistency compared to conventional methods.
Implementation Method 1
an array of one or more power jet modules adapted to jet the liquid mixture into one or more streams of droplets
Implementation Method 2
the dispersion chamber adapted to be coupled to the one or more power jet modules and receive the one or more streams of droplets being dispersed with one or more gas flows therein within the dispersion chamber into a gas-liquid mixture
Implementation Method 3
a reaction chamber connected to the dispersion chamber and adapted to process the gas-liquid mixture into the product material
Data Source
AI summary
A processing system for producing a product material from a liquid mixture includes an array of one or more power jet modules adapted to jet the liquid mixture into one or more streams of droplets and force the one or more streams of droplets into the processing system adapted to process the one or more streams of droplets into the product material. A method for producing a product material from a liquid mixture on a processing system includes moving each of the one or more power jet modules and be connected to an opening of a dispersion chamber, opening one or more doors of the one or more power jet modules, processing the one or more streams of droplets inside a reaction chamber, closing the one or more doors of the power jets modules and moving each of the one or more power jet modules in a second direction.