Solid-state oxidative stress inhibitor for secondary batteries using organometallic polymers, and secondary batteries and lithium-air batteries containing the same

Solid-state inhibitor for scavenging reactive oxygen species using organometallic polymer nanowires

This technology involves synthesizing organometallic polymers, such as organogermanium, into nanowires and anchoring them onto a fibrous substrate (carbon fiber fabric). By integrating this into a battery, it effectively captures and purifies (via disproportionation catalysis) superoxide species—the primary cause of parasitic reactions—thereby preventing electrolyte oxidation and electrode corrosion.

In secondary batteries (particularly lithium-air batteries), reactive oxygen species such as solvated superoxide intermediates generated during charge/discharge cycles attack organic solvents or cross-react with electrodes. This leads to electrolyte decomposition, electrode corrosion, gas evolution, swelling, and reduced battery lifespan.

This technology involves dissolving organometallic polymers (e.g., organogermanium, zinc acetate) in a mixed solvent (distilled water/IPA), dipping a fibrous material into the solution, and utilizing a sub-zero freezing and freeze-drying process to create a solid-state oxidative stress inhibitor (ASD membrane) in a nanowire structure. By placing this within the battery (e.g., outside the cathode or on the separator), it can be applied to improve the stability and cycle life of secondary battery electrolytes.

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Key Features:

• Dissolving the organometallic polymer in a mixed solvent and dipping the fibrous material into the solution
• Freezing the resulting fibrous material after it has been dipped in the organometallic polymer solution
• Freeze-drying the frozen product to anchor the organometallic polymer nanowires onto the fibrous substrate
• Configuration for removing superoxide species, the cause of parasitic reactions, using organometallic polymer nanowires such as organogermanium

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