This technology is an anisotropic conductive film featuring copper particles surface-modified with hexoxy groups dispersed within an acrylic polymer matrix. It enables electrical connection through simple contact without the need for heat or pressure, and can be easily detached, thereby enhancing battery reusability.
Conventional epoxy-type anisotropic conductive films suffer from low process efficiency due to the mandatory requirement for high reaction temperatures and pressure-based processes. Furthermore, their low glass transition temperature makes it difficult to ensure long-term connection reliability and complicates battery disassembly and recycling.
This technology utilizes an acrylic polymer synthesized from 2-EHA and MMA monomers, a TTEGDA crosslinker, a benzoyl peroxide initiator, and an MEHQ polymerization inhibitor. By dispersing micro/nano copper particles modified with hexoxy groups, the film excludes hydrophilic groups, providing corrosion resistance while allowing for the adjustment of tackiness and tensile strength. It can be applied to electrical bonding between cells in battery modules and to remanufacturing processes for used batteries, significantly reducing costs for cell-level replacement by enabling repeated assembly and disassembly without the need for thermal compression equipment.
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