Silver-Zinc Battery and Manufacturing Method Thereof

Highly Flexible Wearable Silver-Zinc Battery Using Twisted CNT Sheet Fiber Electrodes

This technology features a silver-zinc battery structure that achieves both flexibility and conductivity by wrapping silver nanowires and zinc particles in carbon nanotube (CNT) sheets to create fiber electrodes, which are then twisted together with an electrolyte.

Conventional flat-plate batteries have limited design flexibility due to their fixed form factor and lack the flexibility and mechanical stability required for wearable device applications.

This technology consists of a cathode made by wrapping silver nanowires in a first CNT sheet and an anode made by wrapping zinc particles in a second CNT sheet, which are then twisted into a spiral and coated with an electrolyte to form an integrated, highly flexible structure. It can be applied to smart clothing, wearable healthcare sensors, and foldable electronic power sources, ensuring uninterrupted power supply even in environments subject to repeated bending or twisting.

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Key Features:

• A first electrode fiber comprising a first carbon nanotube sheet twisted to enclose silver nanowires
• A second electrode fiber comprising a second carbon nanotube sheet twisted to enclose zinc particles
• An electrolyte disposed between the first and second electrode fibers, provided in either liquid or solid state
• A fiber bundle structure in which the fibers are twisted together such that the number of first electrode fibers exceeds the number of second electrode fibers

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This invention was developed with support from the Ministry of Science, ICT and Future Planning for research on environment-responsive self-energy generation and driving systems.

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