A novel polyethylene terephthalate nonwoven separator based on electrospinning technique for lithium ion battery

Prospective improvements in cost and cycle life of off-grid lithium-ion battery packs: An analysis informed by expert elicitations

“…(a mixture of organic compounds into which lithium salts and other additives are added) into which lithium ions are dissolved and a separator (typically a semi-porous membrane of polyethylene, polypropylene, or a mixture of the two) to ensure no contact between the cathode and the anode, whilst allowing conduction of lithium ions (Hao et al, 2013). Each electrode is connected to a metallic charge collector (typically copper on the anode and aluminium on the cathode side), which is in turn connected to an external circuit during charge and discharge.…”

The high performances of SiO 2 /Al 2 O 3 -coated electrospun polyimide fibrous separator for lithium-ion battery

“…Electrospinning is reported as one of the efficient method to improve the wettability performance as the crystallinity of the fibers are low since the drying process of the fibers occurs in less than 0.1 s. So far, only a few polymer were reported as electrospun separator candidates, including polyacrylonitrile (PAN) [7], Polyvinylidenefluoride (PVDF) [8], polyethylene terephthalate (PET) [9], polyimide (PI) [10] and polyvinyl chloride (PVC) [11]. High porosity and larger nonwoven pores can offer excellent wettability and electrochemical properties.…”

Electrochemical performance of a thermally rearranged polybenzoxazole nanocomposite membrane as a separator for lithium-ion batteries at elevated temperature

“…The thermal shrinkage ratio for the bare PE membrane was 83.3% after storage at 140 C for 30 min, while that for polyimide-coated PE membranes decreased markedly to 10%. Another approach is using a nonwoven separator such as polyethylene terephthalate (PET) [11,12], poly(phthalazinone ether sulfone ketone) (PPESK) [13], polyimide (PI) [14,15], and thermally rearranged polybenzoxazole (TR-PBO) [16e26] membranes by an electrospinning method to develop thermally stable separators. Among these, thermally rearranged polybenzoxazoles (TR-PBOs) have proved to be promising materials for gas separation membranes due to their inherent ultra-pores, which induce both extraordinary permeability and selectivity [16e26].…”