Complexometric Precursor Formulation for Battery Powders
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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 result in materials with wide particle size distributions and impurities, which affect the performance and scalability 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 the number of processing steps and using low-cost raw materials to produce fine, ultrafine, and nanosize powders with tailored physical and chemical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional milling and calcination sequences are used to produce lithium metal oxide powders, then the powders can be manufactured with controlled composition, but the production time and energy consumption increase significantly
Solution Approach 1:
The patent applies preliminary action by forming a complex precursor structure (complexcelle) on bubble surfaces before the final product formation. This pre-organization of metal ions in a controlled complexometric structure eliminates the need for subsequent extensive milling and multiple calcination steps, directly producing powders with the desired particle size distribution and composition in a single reaction step
Solution Approach 2:
The patent uses a complexing agent as an intermediary substance that mediates between the metal ion precursors and the final oxide product. The complexing agent forms stable intermediate complexes (complexcelles) that control nucleation and crystal growth, enabling direct synthesis of fine powders without traditional mechanical processing
2Manufacturing precision
If traditional milling and calcination sequences are used to produce lithium metal oxide powders, then the powders can be manufactured with controlled composition, but the energy consumption increases significantly
Solution Approach 1:
The complex precursor formation on bubble surfaces performs the compositional arrangement in advance, eliminating the need for energy-intensive repeated calcination cycles. The complexometric precipitation directly establishes the correct stoichiometry and phase structure at lower temperatures in a single step
Solution Approach 2:
The patent replaces mechanical milling operations with a chemical precipitation process. Instead of using mechanical energy to grind and classify powders through multiple stages, the complexometric reaction chemically forms the final particle structure directly, dramatically reducing energy consumption
3Ease of manufacture
If conventional production methods are used, then the process is well-established and scalable, but the particle size distribution is wide and contains impurities
Solution Approach 1:
The complexing agent acts as a selective intermediary that controls the precipitation process. It forms stable complexes with metal ions in specific stoichiometric ratios, ensuring high compositional precision and purity. The complexcelle structure on bubble surfaces provides a controlled nucleation site that prevents contamination and ensures uniform particle formation
Solution Approach 2:
The patent controls the precipitation process by adjusting parameters such as pH, temperature, and complexing agent concentration. These parameter changes enable precise control over the complex formation and subsequent particle growth, producing high-purity powders with narrow particle size distribution that can be scaled up using conventional reactor equipment
4Manufacturing precision
If extensive milling and calcination sequences are used, then the powders achieve the desired composition, but the production cost increases
Solution Approach 1:
By performing the compositional arrangement in the complex precursor stage, the patent eliminates multiple processing steps including extensive milling and repeated calcination. This preliminary organization of material in the complexcelle structure directly yields the final product with correct composition, reducing both processing time and production cost
Solution Approach 2:
The patent substitutes expensive mechanical milling operations with a controlled chemical precipitation process. The complexometric reaction provides precise composition control through stoichiometric complex formation, eliminating the need for energy-intensive mechanical processing and classification equipment
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 production time and costs by eliminating the need for extensive milling and calcination sequences, producing powders with improved particle size distribution, purity, and performance, enhancing the cycle life and capacity of lithium ion batteries.
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
forming a complexcelle on a bubble surface
Data Source
AI summary
A compound MjXp which is particularly suitable for use in a battery prepared by the complexometric precursor formulation methodology wherein: Mj is at least one positive ion selected from the group consisting of alkali metals, alkaline earth metals and transition metals and j is an integer representing the moles of said positive ion per moles of said MjXp; and Xp, a negative anion or polyanion from Groups IIIA, IV A, VA, VIA and VIIA and may be one or more anion or polyanion and p is an integer representing the moles of said negative ion per moles of said MjXp.