Photo-patternable, Elastic Polymer Network Electrolytes for High Scalability to Skin Electronics
발표자
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초록
내용
Skin electronics based on elastic polymer electrolyte can gain interests due to their skin conformability and low power consumption. However, realization of high integrated elastic polymer electrolyte-based device is challenging due to its rubbery nature. To overcome this, we demonstrate photo-patternable, elastic polymer network electrolyte(elastic-PNE), where thermoplastic polyurethane including ionic liquids(ILs)(i-TPU) is crosslinked by ethylene oxide(EO)-bridged azide crosslinker. The PNE showed enhanced ion conductivity(σPNE:2.29mS/cm↔σi-TPU:1.57mS/cm) and facture strain(εPNE≈670%↔εi-TPU≈370%), although the TPU matrix was densely cross-linked by the crosslinker. This is attributed to the EO structure providing ionic interaction and motion of flexible chain segments in the elastic-PNE. Moreover, the PNE can achieve high-resolution photo-pattern(< 5µm), indicating that the PNE possesses great potential to break through restricted scalability of elastic solid-electrolytes.