CO2 Adsorption Battery Electrolyte Design for Low-Energy Gas Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for carbon dioxide separation and storage, such as PSA processes and carbon dioxide batteries, require significant energy and large devices, and existing carbon dioxide batteries suffer from poor durability and high costs due to the use of specific materials like quinone compounds and expensive ferrocene-type compounds.
Innovation Solution
A carbon dioxide adsorption battery design featuring a gas-permeable negative electrode, electrolyte layers with a redox compound having an N-oxy radical group, and a separator that suppresses redox compound permeation, allowing for efficient carbon dioxide adsorption and release at room temperature and atmospheric pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PSA process or conventional carbon dioxide batteries are used, then carbon dioxide separation and storage can be achieved, but significant energy consumption and large device size are required
Solution Approach 1:
The patent changes the operating parameters of the battery system by using redox compounds that enable carbon dioxide adsorption at lower potentials and desorption at higher potentials, allowing the process to occur at room temperature and atmospheric pressure rather than requiring high pressure and temperature conditions, thereby significantly reducing energy consumption
Solution Approach 2:
The patent replaces the mechanical compression and pressure swing mechanisms of PSA processes with an electrochemical system using redox compounds, where electrical energy drives the adsorption and desorption cycles, eliminating the need for high-pressure equipment and mechanical compressors
2Reliability
If conventional battery materials are used, then battery function can be maintained, but high manufacturing costs are incurred
Solution Approach 1:
The patent replaces expensive ferrocene-type compounds and other specialty materials with more commonly available redox compounds that can be synthesized or obtained at lower cost, maintaining battery functionality while significantly reducing material costs and simplifying the manufacturing process
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 battery effectively adsorbs carbon dioxide during charging and releases it during discharging, maintaining a charged state and concentrating carbon dioxide, while using more durable and cost-effective materials compared to previous technologies.
Implementation Method 1
a redox compound having an N-oxy radical group within a molecule
Implementation Method 2
each of the electrolyte layers includes an electrolytic solution capable of dissolving carbon dioxide, and a redox compound having an N-oxy radical group within a molecule
Implementation Method 3
the negative electrode is a gas-permeable electrode
Implementation Method 4
the separator suppresses permeation of the redox compound and is permeable to the electrolytic solution
Data Source
AI summary
One aspect of the present invention is a carbon dioxide adsorption battery including: a negative electrode; a positive electrode; a separator disposed between the negative electrode and the positive electrode; and electrolyte layers respectively disposed between the negative electrode and the separator and between the positive electrode and the separator, wherein the negative electrode is a gas-permeable electrode, each of the electrolyte layers includes an electrolytic solution capable of dissolving carbon dioxide, and a redox compound having an N-oxy radical group within a molecule, and the separator suppresses permeation of the redox compound but is permeable to the electrolytic solution.