Organic Quinone Electrolytes for Safer High-Capacity Flow Batteries
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Solution Overview
Problem
Existing redox flow batteries face challenges such as high costs of active materials, low cell and system performance, poor cycle life, and toxicity, limiting their widespread adoption for large-scale energy storage.
Innovation Solution
Development of novel organic redox active species that are inexpensive, highly soluble, and exhibit fast electrode kinetics, along with the use of quinone compounds that can form quinone/hydroquinone redox couples, to enhance the performance and safety of redox flow batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If inorganic redox materials (such as vanadium salts or bromine) are used in redox flow batteries, then energy storage capacity is improved, but toxicity and environmental risks increase
Solution Approach 1:
The patent changes the chemical composition parameters from inorganic redox materials to organic redox materials (quinone compounds), fundamentally altering the material class to eliminate toxicity while maintaining energy storage functionality through organic-based redox couples
Solution Approach 2:
The patent employs inexpensive organic quinone compounds that can be readily synthesized or obtained, replacing expensive and toxic inorganic materials like vanadium salts, thereby achieving cost-effective and environmentally friendly energy storage
2Quantity of substance
If inorganic redox materials based on transition metals are used, then redox potential and energy density are improved, but cost and availability issues arise
Solution Approach 1:
The patent transitions from transition metal-based inorganic compounds to carbon-based organic quinone compounds, changing the fundamental chemical composition to achieve both high energy density through multi-electron transfer and low cost through abundant carbon, hydrogen, oxygen availability
Solution Approach 2:
The patent uses inexpensive organic quinone compounds that can be synthesized from abundant feedstocks, replacing costly and less available inorganic transition metal materials, thereby achieving economical large-scale energy storage
3Quantity of substance
If redox flow batteries are designed for large-scale energy storage, then capacity is improved, but system complexity and manufacturing challenges increase
Solution Approach 1:
The patent changes the electrolyte composition to organic quinone-based systems that offer high solubility and stability, enabling high capacity storage without the manufacturing complexities associated with inorganic materials, thereby simplifying large-scale system deployment
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 proposed solution aims to improve the energy density, operating potential, and cycle life of redox flow batteries while reducing toxicity and costs, making them more suitable for large-scale energy storage applications.
Implementation Method 1
Redox reactions are employed to store energy in the form of a chemical potential in liquid electrolyte solutions which flow through a battery of electrochemical cells during charge and discharge
Implementation Method 2
use of quinone compounds that can form quinone/hydroquinone redox couples, to enhance the performance and safety of redox flow batteries
Data Source
AI summary
The present disclosure relates to a combination of redox active compounds for use as redox flow battery electrolytes. Further provided herein is a kit comprising the combination, a redox flow battery, and a method using the combination, kit and/or redox flow battery of the present disclosure.