Electrode composition for aluminum-ion secondary batteries, method for manufacturing the same, aluminum-ion secondary battery, and method for manufacturing the same

Aluminum battery electrode using potassium-tuned nickel-iron Prussian blue analogues

This technology utilizes a nickel-iron-based Prussian blue analogue (KxNi[Fe(CN)6]1-y·z(H2O)) as a cathode or anode active material for aluminum-ion secondary batteries, optimizing the reversible intercalation and deintercalation performance of aluminum ions by controlling the potassium (K) content within the crystal lattice.

Conventional active materials for aluminum-ion batteries, such as graphite, V2O5, TiO2, and Mo6S8, have suffered from low energy density due to the requirement for excessive electrolyte usage. Furthermore, they often react only in specific electrolytes or have unclear operating voltage ranges, making it difficult to achieve stable performance in both aqueous and non-aqueous electrolyte systems.

This technology 0

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Key Features:

• An electrode comprising a KxNi[Fe(CN)6]1-y˙z(H2O) active material where x is greater than 0 and less than or equal to 2, and y is greater than or equal to 0 and less than 1
• An aluminum-ion secondary battery equipped with an electrode containing a KxNi[Fe(CN)6]1-y˙z(H2O) active material, allowing for the reversible intercalation and deintercalation of aluminum ions
• A step of forming an active material by mixing KxNi[Fe(CN)6]1-y˙z(H2O) powder with a conductive material and a binder
• A step of forming an electrode for an aluminum-ion secondary battery by applying the formed active material onto a current collector

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