Intrinsically Stretchable All-Solid-State Lithium-Ion Battery Fabricated via Sequential Printing and All-material Crosslinking
발표자
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초록
내용
Intrinsically stretchable batteries are essential for seamless integration into stretchable electronics, but they have been little studied. Structurally stretchable batteries inevitably have low energy density and poor integration ability, but if all elements of the battery are intrinsically stretchable, stable deformability and high energy density can be achieved simultaneously. We replaced the rigid Al and Cu current collectors to printable nanocomposite approaches with thermoplastic elastomers and metallic nanofillers. We also introduced a highly stretchable all-materials UV-crosslinked solid electrolyte by direct coating, which achieves high ionic conductivity and low interfacial resistance, and shows significantly improved adhesion properties. The stretchable cell was also fabricated as a sequential stack using the "screen-printing" method for versatility, and each layer was designed considering orthogonality and solubility parameters to prevent delamination without affecting the other layers.