Dual Seal Method for the Hermetic Sealing of Microbatteries

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Microbatteries face unique hermetic sealing challenges due to their millimeter dimensions. As battery size decreases, the surface area to volume ratio increases, making traditional sealing methods like laser welding impractical. This guide explores innovative double sealing methods using epoxy adhesives combined with laser-cut gasket materials to achieve airtight integrity while maximizing energy density. The approach meets critical requirements including chemical resistance to electrolytes, low moisture permeability, and thermal stability at operating temperatures.