POS6-1087
Sustainable hydrophilic porogen leaching process for novel PPS membrane applied to lithium metal batteries
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Hoyun Jeon (korea institute of science and technology)
Co-Author(s)
Abstract
Polyphenylene sulfide (PPS) has been investigated as a next-generation separator material for lithium metal batteries (LMBs) due to its outstanding flame resistance, which helps mitigate thermal runaway risks. However, its exceptional chemical inertness, low solubility, and high mechanical strength hinder conventional processing approaches. To overcome this limitation, introducing a porous structure has been considered essential. While porogen-assisted strategies using materials such as SiO2, TiO2 are effective, they often require hazardous chemicals such as hydrofluoric acid (HF) for removal, raising environmental and safety concerns. In this study, we propose a porogen-assisted process utilizing potassium chloride (KCl), a water-soluble compound that enables environmentally benign removal via simple water leaching. As part of this strategy, an aerosol process was employed to produce KCl particles with a controlled size below 1
m, enabling uniform dispersion within the PPS matrix. The resulting KCl/PPS composite film was prepared via extrusion, and subsequent water leaching yielded a PPS membrane with a well-controlled pore morphology suitable for high-performance LMB applications. Furthermore, the prepared PPS membrane demonstrated stable cycling performance that is on par with or even superior to conventional commercial polyolefin-based porous membranes.
m, enabling uniform dispersion within the PPS matrix. The resulting KCl/PPS composite film was prepared via extrusion, and subsequent water leaching yielded a PPS membrane with a well-controlled pore morphology suitable for high-performance LMB applications. Furthermore, the prepared PPS membrane demonstrated stable cycling performance that is on par with or even superior to conventional commercial polyolefin-based porous membranes.
