Complexometric Precursor Formulation for Nanopowder Synthesis
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Solution Overview
Problem
Current methods for producing high-performance lithium metal oxide powders for battery applications are energy-intensive, costly, and require lengthy processing times, often resulting in powders with wide particle size distributions and contamination issues, which hinder the scalability and cost-effectiveness of lithium ion batteries.
Innovation Solution
The complexometric precursor formulation (CPF) method involves forming a complexcelle on a bubble surface, allowing for controlled nucleation and crystal growth, reducing processing steps and utilizing low-cost raw materials to produce fine, ultrafine, and nanosize powders with tailored physical and chemical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods are used to produce lithium metal oxide powders, then processing is simpler, but processing time is lengthy and costs are high
Solution Approach 1:
The patent applies preliminary action by forming a complexcelle precursor structure on bubble surfaces before final powder formation. This pre-organization of metal ions in a controlled complexometric structure enables faster subsequent processing and reduces overall processing time while maintaining product quality
Solution Approach 2:
The complexcelle acts as an intermediary structure between raw materials and final lithium metal oxide powder. This intermediate complexometric precursor facilitates controlled nucleation and crystal growth, streamlining the production process and reducing both time and cost
2Manufacturing precision
If conventional processing methods are used, then equipment is simpler, but particle size distribution is wide and contamination occurs
Solution Approach 1:
The patent applies local quality by creating uniform complexcelle structures on individual bubble surfaces, ensuring consistent local environments for nucleation. This localized control of precursor formation leads to narrow particle size distributions and reduced contamination in the final powder
Solution Approach 2:
The method changes key processing parameters by using complexometric precipitation on bubble surfaces instead of conventional mixing and calcination. This parameter change enables precise control over particle size distribution and minimizes contamination while maintaining equipment simplicity
3Reliability
If nanopowders are produced to enhance battery performance, then capacity retention improves, but production costs increase
Solution Approach 1:
The complexcelle formation process is self-organizing, where metal ions automatically arrange into precursor structures on bubble surfaces without requiring complex external control. This self-service mechanism produces high-performance nanopowders with improved capacity retention while minimizing production costs through natural self-organization
Solution Approach 2:
The method uses simple, low-cost reagents and bubble surfaces as temporary templates that are easily discarded after serving their purpose. This approach to using cheap, disposable intermediaries enables production of high-performance nanopowders without expensive equipment or complex processing
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 significantly reduces processing time and costs by producing powders with narrow particle size distributions and enhanced performance, achieving higher capacity retention and stability in lithium ion batteries, making them suitable for industrial-scale production.
Implementation Method 1
forming a complexcelle on a bubble surface, allowing for controlled nucleation and crystal growth
Implementation Method 2
forming a complexcelle on a bubble surface, allowing for controlled nucleation and crystal growth
Implementation Method 3
The complexometric precursor formulation (CPF) method involves forming a complexcelle on a bubble surface
Data Source
AI summary
A method of forming a battery with improved properties is provided. The battery has a cathode material prepared by the complexometric formulation methodology comprising MjXp wherein: Mj is at least one positive ion selected from the group consisting of alkali metals, alkaline earth metals and transition metals and n represents the moles of positive ion per mole of MjXp; and Xp is a negative anion or polyanion selected from Groups IIIA, IV A, VA, VIA and VIIA and may be one or more anion or polyanion and p representing the moles of negative ion per moles of MjXp. The battery has a discharge capacity at the 1000th discharge cycle of at least 120 mAh/g at room temperature at a discharge rate of 1 C when discharged from at least 4.6 volts to at least 2.0 volts.