Printable solid polymer electrolyte for direct ink writing of solid-state batteries
발표자
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초록
내용
High-performance power sources fabricated using direct int writing (DIW) have attracted considerable interest for miniaturized and customized electronics. Among them, form-factor-free lithium-ion solid-state batteries (SSBs) can be promising candidates due to their high energy density and safety. Herein, we report a printable solid polymer electrolyte (SPE) for all DIW of solid-state batteries. The molecular weight of the main polymer and the composition of the electrolyte were carefully optimized. The rheological properties of our DIW printable electrolyte allow a high printing resolution of ~100 μm and a high ionic conductivity of 0.7 mS cm−1 at room temperature. Compared to a commercial liquid electrolyte and separator, this solid electrolyte is non-flammable and exhibits a low shrinkage or decomposition rate at high temperatures. Our printable solid polymer electrolyte can pave the way to realize all 3D printed batteries for next-generation arbitrary-shaped devices.