Zinc-bromine battery cell and zinc-bromine battery module including the same

Flow-free battery cell with horizontal electrode arrangement and non-porous barrier to prevent bromine crossover

This technology is a zinc-bromine battery structure that suppresses self-discharge by physically blocking bromine ion crossover using a non-porous barrier placed between horizontally aligned anode and cathode electrodes.

Conventional vertical cell structures suffer from crossover between electrodes caused by the diffusion of bromine ions and the detachment of zinc metal deposits. This leads to self-discharge and degraded battery performance.

This technology features a horizontal arrangement of the anode and cathode with a non-porous film barrier—taller than the thickness and width of the electrodes—placed between them to control ion migration paths. Additionally, a conductive adhesive is applied to the electrode surfaces to reduce resistance and improve contact. This system is ideal for solar and wind-integrated ESS and emergency power supplies for buildings where fire safety is a priority, enabling the construction of aqueous storage systems with minimal energy loss during long-term standby.

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Key Features:

• Anode and cathode arranged horizontally, with the side facing the electrolyte positioned below the electrolyte in the direction of gravity
• Non-porous film barrier placed between the anode and cathode, with a height greater than the thickness and width of the electrodes
• Bipolar plate comprising a first region in contact with the side of the anode or cathode and a second region in contact with the electrolyte
• Zinc-bromine battery module comprising a plurality of zinc-bromine battery cells as unit cells arranged horizontally

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