Development of a thin flexible Li battery design with a new gel polymer electrolyte operating at room temperature

In this study, we develop a new Li-metal battery design merging with IoT requirements, mainly the low thickness, thermal stability and flexibility. To reach these specifications, firstly prepared an efficient gel polymer electrolyte (GPE) composed of PVDF-HFP network, LiFSI: Pyr13FSI liquid binary solution lithium montmorillonite Li-MMT clay. The as-synthesized material exhibits high ionic conductivity (0.48 mS cm?1 at 25 °C) good stability, up to 140 °C. parallel, optimized ratio packaging active thickness is developed. design, copper foils act both as current collector casing, decreasing overall cell thickness. Li metal batteries are realized using developed GPE design. 360 760 ?m for single side double-sided architectures respectively. These show well functioning under bending exhibit cycling ability remaining capacity higher than 85% after more 200 cycles Thanks combination original Cu flexible membrane, promising properties merge requirements.