Prussian Blue Analogue Manufacturing via Universal Process
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Solution Overview
Problem
Current manufacturing systems for Prussian blue analogue electrochemically active coordination compounds are not scalable, require expensive and special-order precursors, and result in batch-to-batch variance due to poorly controlled particle size, limiting the production of multiple different classes of materials in sodium or potassium rich transition metal cyanide coordination compounds.
Innovation Solution
A multi-product manufacturing method that uses common starting materials and a simplified, compacted process to produce multiple different Prussian blue analogue electrochemically active coordination compounds, including sodium and potassium-based TMCCCs, employing sulfur-containing reducing agents and potassium salts for cation exchange, allowing for scalable and reproducible production with controlled particle size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If customized manufacturing processes are used for each specific class of PBA, then product specificity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies a universal manufacturing process that can produce multiple different classes of Prussian blue analogue materials (PBAs) using the same equipment and standardized procedure. The process uses common starting materials including iron(III) sulfate, manganese(II) sulfate, and hexacyanoferrate salts, eliminating the need for customized processes for each PBA class while maintaining product specificity through controlled reaction conditions.
2Manufacturing precision
If specialized precursors are used for each PBA class, then manufacturing precision is improved, but loss of substance and cost increase
Solution Approach 1:
The patent achieves manufacturing precision by controlling reaction parameters such as temperature (80-100°C), pH level (using sulfuric acid to adjust to pH 1-3), and reaction time rather than requiring specialized precursors. The standardized parameters ensure consistent product quality across different PBA classes while using common, cost-effective starting materials.
3Manufacturing precision
If heating and pressurizing reaction conditions are employed, then manufacturing precision is improved, but loss of energy and operational complexity increase
Solution Approach 1:
The patent controls particle size and manufacturing precision by optimizing temperature (80-100°C, which is moderate heating rather than high-temperature pressurizing) and pH conditions rather than relying on extreme heating and pressurizing. This approach achieves the desired particle size control with lower energy consumption and simpler operational requirements.
4Manufacturing precision
If batch processes are used for PBA production, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The patent enables continuous production by using a standardized, scalable process that can operate continuously rather than requiring separate batch processes for each PBA class. The universal process allows for continuous synthesis of different PBA materials using the same equipment and procedure, maintaining batch consistency while significantly improving productivity and production rate.
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
Enables the efficient and cost-effective production of multiple classes of Prussian blue analogue materials with well-controlled particle size, reducing manufacturing expenses and time, and improving batch-to-batch reproducibility, suitable for industrial-scale production of sodium and potassium ion batteries.
Implementation Method 1
employing sulfur-containing reducing agents
Implementation Method 2
potassium salts for cation exchange
Data Source
AI summary
A system and method for a multi-product manufacturing method capable of producing multiple different Prussian blue analogue electrochemically active coordination compounds for use in one or more conductive structures in such cells, for example, for use with a transition metal cyanide coordination compound (TMCCC) containing electrically-conductive structure (e.g., an electrode) as well as methods for use and manufacturing of such structures and electrochemical cells including these devices. One of a set of multiple different Prussian Blue analogue materials are capable of being prepared, directly or indirectly, from a common precursor mixture.