Concentrated VRFB Electrolyte Composition for Lower Shipping Weight
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The current methods for distributing VRFB electrolyte to facilities operating Vanadium Redox Flow Batteries (VRFBs) are costly and logistically complex, involving high shipping costs due to the product being mostly water, complex handling of hazardous liquids, and the need for additional equipment for on-site electrolyte production.
Innovation Solution
A novel method for producing a concentrated VRFB electrolyte composition by mixing vanadium oxide, water, and aqueous H2SO4 to create a reaction mixture with a vanadium sulfate concentration of at least 3.0 M and a total sulfate concentration at least twice that of vanadium sulfate, which is then processed to increase viscosity and reduce water content, resulting in a semi-solid or gel-like composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If finished VRFB electrolyte is shipped to the facility, then the facility receives ready-to-use electrolyte, but shipping costs are high and logistics are complex due to the product being mostly water and being a hazardous liquid
Solution Approach 1:
The patent extracts water from the finished electrolyte to create a concentrated form. The concentrated electrolyte contains the essential vanadium sulfate and sulfuric acid components in high concentration while removing the majority of water, thereby reducing shipping weight and volume while maintaining the ability to produce functional electrolyte at the facility
Solution Approach 2:
The patent changes the concentration parameter of the electrolyte from typical operating concentrations (e.g., 0.5-2.0 M vanadium sulfate) to highly concentrated forms (at least 3.0 M vanadium sulfate and 2x sulfate concentration). This parameter change fundamentally alters the physical state and shipping characteristics while preserving the electrochemical functionality
2Ease of manufacture
If chemicals for producing finished VRFB electrolyte are shipped to the facility, then the facility can produce electrolyte on-site, but complex handling and metering equipment is required
Solution Approach 1:
The patent combines multiple chemical components (vanadium oxide, sulfuric acid, and water) into a single concentrated electrolyte product. This merging eliminates the need for separate storage, handling, and metering of individual chemicals at the facility, as all necessary components are pre-combined in the correct proportions in the concentrated form
Solution Approach 2:
The patent performs the chemical reactions and mixing operations in advance during manufacturing, creating a pre-prepared concentrated electrolyte that contains all necessary components in the correct stoichiometric ratios. This preliminary action transfers the complexity from the facility site to the manufacturing site
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 concentrated VRFB electrolyte composition significantly reduces shipping costs and logistical complexities by minimizing water content and weight, allowing for easier transportation and eliminating the need for complex on-site equipment for electrolyte production.
Implementation Method 1
mixing a vanadium oxide, water and aqueous H2SO4 in sufficient quantities to produce a reaction mixture comprising a vanadium sulfate
Implementation Method 2
increasing the viscosity of the reaction mixture to produce the concentrated VRFB electrolyte composition
Data Source
AI summary
There is disclosed a method for producing a concentrated VRFB electrolyte composition. The method comprises the following steps: (a) mixing a vanadium, oxide, water and aqueous H2SO4 in sufficient quantities to produce a reaction mixture comprising a vanadium sulfate at a concentration at least 3.0 M and a total sulfate concentration of at least 2 times the concentration of the vanadium sulfate; (b) maintaining the reaction mixture at an initial temperature that substantially avoids precipition of reaction solids; (c) allowing the reaction mixture to reach ambient temperature: and (d) increasing the viscosity of the reaction mixture to produce the concentrated VRFB electrolyte composition. There is also disclosed a concentrated VRFB electrolyte composition. The concentrated VRFB electrolyte is believed to provide advantages include reduced shipping costs, logistics and on-site capital costs at the facility using the VRFBs.