Manufacturing of Chelating-Treated Prussian Blue Analogue and Seawater Battery Containing the Same

Prussian Blue Analogue Secondary Battery Material Manufactured via Chelating Treatment

This technology relates to a chelating-treated Prussian Blue analogue, in which defects and crystal water are reduced by mixing and co-precipitating a Prussian Blue analogue with a chelating agent.

Conventional Prussian Blue analogues have faced issues where rapid co-precipitation in aqueous solutions leads to structural instability due to defects and the presence of crystal water that hinders ion transport.

By reducing defects and crystal water through chelating treatment, this technology enhances structural stability, allowing it to be applied as a cathode material for seawater batteries to improve ion storage performance and cycle life.

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Key Features:

• A Prussian Blue analogue represented by a chemical formula containing an alkali metal, a first transition metal, and a second transition metal
• Preparing a first mixed solution containing a ferrocyanide precursor with an alkali metal and a solvent
• Synthesizing a Prussian Blue analogue by preparing a second mixed solution containing a transition metal precursor and a chelating agent
• Composition for manufacturing a Prussian Blue analogue with controlled crystallinity via chelating treatment as a material for secondary batteries

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